🥇 HUESO FRONTAL, Anatomía. Fácil, Rápido y Sencillo

Summary

Este vídeo educativo explora la anatomía del hueso frontal, uno de los ocho huesos que componen la caja craneal. Se describen sus tres caras y tres bordes, destacando su importancia en la formación del frente, la cavidad orbital y el fosa craneal anterior. Se mencionan características como el eminencia frontal media, las crestas frontales y los senos frontales. Además, se explica cómo se articula con huesos vecinos y se presentan detalles sobre sus suturas y forámenes.

Takeaways

• 💀 La cavidad craneal está formada por 8 huesos que se clasifican en 2 grandes grupos: 4 huesos pares y 4 huesos impares.
• 📐 Los 4 huesos pares son los huesos parietal y huesos temporal, ubicados en los lados.
• 🔑 Los 4 huesos impares, desde el frente hacia atrás, son el hueso frontal, esfenoides, occipital y etmoides.
• 🌟 El hueso frontal es el protagonista del video y está compuesto de 3 caras y 3 aristas.
• 🔺 La cara anterior del hueso frontal es convexa hacia adelante y forma la frente.
• 🔻 La cara posterior es cóncava hacia atrás y presenta giros y surcos que corresponden a las estructuras internas del cerebro.
• 👁️ La cara inferior del hueso frontal forma el techo de la cavidad orbital.
• 🚶‍♂️ En niños pequeños, el hueso frontal está separado por una sutura frontal media que desaparece en la edad adulta.
• 🏼 La cara anterior del hueso frontal presenta eminencias y crestas que se relacionan con la forma de la frente.
• 🧠 La cara posterior del hueso frontal forma parte de la fossa craneal anterior y contiene el forámen cegado, una estructura sin conexión.
• 👃 El borde inferior del hueso frontal se articula con el hueso nasal y el maxilar superior, y presenta huecos para las senos frontales.

Q & A

¿Cuál es la función principal del hueso frontal en la anatomía del cráneo?

El hueso frontal es parte integral del cráneo y conforma la frente o frente. También forma parte de la cavidad craneal, protegiendo el cerebro y contribuyendo a la formación de la fosa craneal anterior.

¿Cuántas caras y bordes tiene el hueso frontal según el guion?

El hueso frontal está compuesto por tres caras grandes y tres bordes. Estas caras incluyen la cara anterior, la cara posterior y la cara inferior.

¿Qué es la prominencia frontal media y en qué se encuentra?

La prominencia frontal media es una elevación en la cara anterior del hueso frontal, ubicada en la línea media o glabella. Es una característica anatómica importante para identificar en la región del frente.

¿Cómo se llaman las crestas que se encuentran lateralmente a la glabella?

Las crestas que se encuentran lateralmente a la glabella se llaman crestas frontoparietales o crestas frontolaterales, y forman los bultos laterales en la frente de las personas.

¿Qué es el arco supraciliario y dónde se encuentra?

El arco supraciliario es una estructura ósea que se encuentra justo detrás de las cejas, y es palpable en algunas personas. Se encuentra en la cara anterior del hueso frontal.

¿Cuál es la función del foramen cegado en el hueso frontal?

El foramen cegado es una estructura que no comunica con ningún otro órgano o tejido. No hay pasaje de vasos sanguíneos, nervios o cualquier otro tejido a través de él; simplemente termina en un callejón sin salida.

¿Cómo se forma la fosa craneal anterior y qué huesos conforman su techo?

La fosa craneal anterior está formada por la cara posterior del hueso frontal, que incluye la parte superior y la parte inferior de la lámina del hueso. El techo de la fosa craneal anterior está conformado por eminencias o placas orbitales.

¿Qué es la cresta frontal y dónde se encuentra?

La cresta frontal es una estructura en la cara posterior del hueso frontal que se extiende desde la región superior hacia la parte inferior, formando parte de la fosa craneal anterior.

¿Cuál es la función de las fosas del hueso frontal?

Las fosas del hueso frontal albergan la glándula lacrimal y el músculo oblicuo superior del ojo, y están situadas en la cara inferior del hueso frontal.

¿Cómo se llaman las suturas que unen el hueso frontal con otros huesos del cráneo y cuáles son?

Las suturas que unen el hueso frontal con otros huesos del cráneo incluyen la sutura frontonasal, frontolacrimal, frontomaxilar, frontoetmoidal, frontoparietal y frontozigomatica. Estas suturas son importantes para la articulación y el crecimiento del cráneo.

¿Qué son las senas y qué relación tienen con el hueso frontal?

Las senas son surcos o impresiones digitales presentes en las placas orbitales del hueso frontal, que están relacionadas con los giros del lóbulo frontal del cerebro.

Outlines

00:00

💀 Introducción a la anatomía craneal: hueso frontal

El vídeo comienza con una invitación al suscriptor para que se una al canal y luego se enfoca en la anatomía del cráneo, específicamente en el hueso frontal. Se explica que el cráneo está compuesto por 8 huesos que se agrupan en 4 pares y 4 huesos impares. El hueso frontal es uno de los impares y se describe su composición por tres caras y tres bordes. La cara anterior es convexa hacia adelante, formando la frente, mientras que la cara posterior es cóncava hacia atrás y presenta giros y surcos que corresponden a las estructuras internas del cerebro. Se menciona que la cara inferior del hueso frontal forma el techo de la cavidad orbital.

05:04

🔍 Detalles anatómicos del hueso frontal

Se detallan las características de la cara anterior del hueso frontal, incluyendo la eminencia frontal media o glabella, las eminencias frontales laterales y las arquitecturas supraciliarias. Se describen las crestas y las facetas laterales del hueso frontal y se menciona la presencia de una sutura metopica en niños pequeños que desaparece con el crecimiento. Se explora la cara posterior, destacando la sutura longitudinal y la cresta frontal, así como el forámen cegado y la notación etmoidal. Se describe la función de las placas orbitales y se menciona la presencia de senos frontales.

10:10

👁️ Detalles adicionales del hueso frontal y senos frontales

Se continúa la descripción del hueso frontal, enfocándose en la cara inferior y sus características, como el espinazo nasal frontal y los lugares de articulación con el maxilar y la etmoides. Se describen las aperturas de los senos frontales y las vías etmoidales. Se mencionan las impresiones digitales en las placas orbitales y se exploran las caras y bordes del hueso frontal, incluyendo las uniones con otras partes del cráneo y las suturas que lo unen a otros huesos.

15:16

📢 Conclusión y recursos adicionales

El presentador concluye el vídeo pidiendo suscripciones y 'me gusta' para el contenido y ofrece enlaces a otros videos relacionados con la cavidad orbital y otros huesos del cráneo para un entendimiento más profundo del tema.

Keywords

💡craneofacial

Craneofacial se refiere al conjunto de huesos y estructuras que forman la caja craneal y la cara. En el vídeo, el presentador explora la anatomía del cráneo, centrándose en el hueso frontal, que es parte integral del craneofacial y juega un papel crucial en la formación de la cavidad craneal y la cavidad orbital.

💡frontal bone

El hueso frontal es uno de los huesos singulares del cráneo que se discute en el vídeo. Se encuentra en la parte delantera del cráneo y forma parte de la fachada del mismo, también conocida como frente. El vídeo describe su composición y su articulación con otros huesos.

💡cranial vault

La bóveda craneal es la parte superior y protectora del cráneo compuesta por ocho huesos. En el vídeo, se menciona que se divide en dos grandes grupos: los huesos pares y los huesos impares, incluyendo el hueso frontal como uno de los impares.

💡anterior face

La cara anterior del hueso frontal es la parte que se encuentra hacia delante y conforma la frente. Se caracteriza por ser una superficie lisa y cóncava hacia atrás, como se describe en el vídeo cuando se habla de la composición anatómica del hueso frontal.

💡posterior face

La cara posterior del hueso frontal es la parte que se orienta hacia la cavidad craneal y forma parte de la fossa craneal anterior. El vídeo menciona que esta cara tiene una serie de giros y surcos que corresponden a las estructuras internas del cerebro.

💡gyri and grooves

Los giros y surcos son estructuras en las caras posteriores de los huesos craneales que corresponden a las sulcus del cerebro. En el vídeo, se menciona que la cara posterior del hueso frontal tiene una serie de estos giros y surcos que forman parte de la bóveda craneal.

💡orbital cavity

La cavidad orbital es la cavidad del cráneo que alberga el ojo. El vídeo describe cómo la parte inferior de la cara posterior del hueso frontal forma el techo de la cavidad orbital y cómo está relacionada con la fossa craneal anterior.

💡frontal sinus

Las sinus frontales son cavidades aéreas dentro del hueso frontal que se mencionan en el vídeo. Se comunican con la cavidad nasal y están separadas por un septum central. Son un ejemplo de cómo el hueso frontal tiene una función no solo estructural sino también relacionada con el sistema respiratorio.

💡sutures

Las suturas son las uniones entre los huesos del cráneo. En el vídeo, se describe cómo el hueso frontal se une a otros huesos a través de diversas suturas, como la sutura coronal y la sutura frontonasal, lo que muestra cómo los huesos craneales están interconectados.

💡eminentiae

Las eminencias son protuberancias en la superficie del hueso frontal que se mencionan en el vídeo, como la eminencia frontal media o glabella, y las eminencias frontales laterales. Estas forman parte de la morfología facial y son importantes en la identificación de características faciales.

💡foramen caecum

El foramen caecum es una estructura que no comunica con nada y se menciona en el vídeo como una parte de la cara posterior del hueso frontal. Aunque no tiene una función aparente, es un detalle anatómico interesante que se encuentra en el estudio del cráneo.

Highlights

Iniciando con videos de anatomía craneal, específicamente hoje hablaremos de la anatomía del hueso frontal.

El cráneo está compuesto de 8 huesos clasificados en dos grandes grupos: cuatro huesos pares y cuatro huesos impares.

Los cuatro huesos impares son el hueso frontal, esfenoides, occipital y etmoides.

El hueso frontal está compuesto de tres grandes caras y tres bordes.

La cara anterior del hueso frontal es convexa hacia adelante, formando la frente.

La cara posterior es cóncava hacia atrás, con giros y surcos que corresponden a las estructuras internas del cerebro.

La tercera cara del hueso frontal es la inferior, que forma el techo de la cavidad orbital.

En la cara anterior del hueso frontal se encuentra el eminencia frontal media, también conocida como glabella.

Se presentan también las eminencias frontales laterales y las arquitecturas supraciliarias.

La cresta frontal lateral limita la porción anterior de la cara anterior del hueso frontal.

En niños pequeños, el hueso frontal está separado por una sutura metopica que desaparece en la edad adulta.

La cara posterior del hueso frontal forma la fossa craneal anterior y presenta una gran surco para el seno longitudinal.

El foramen cegado es una estructura que no comunica con nada y se encuentra en la parte inferior de la cresta frontal.

La cresta etmoidal es una muesca en forma de C que sirve para la articulación del hueso etmoides con el frontal.

La cara inferior del hueso frontal presenta el espinazo nasal frontal y los forámenes etmoidales.

Los senos frontales son estructuras aéreas ubicadas dentro del hueso frontal y se comunican con la cavidad nasal.

El hueso frontal se articula con múltiples huesos a través de suturas como la frontonasal, frontomaxilar, frontoetmoidal y frontoparietal.

Transcripts

Greetings to all my followers, to all the people who watch my videos every day and to

those who do not follow me, well, I invite you to quickly subscribe to my channel here,

click here in the lower right corner to be automatically subscribed subscribed to the channel, I have decided

to start with the skull anatomy videos, specifically today we will talk about the anatomy

of the forehead bone, that is, we will talk about the anatomy of the frontal bone, the skull or the large

bone cavity, the bone vault, it is made up of 8 bones, these bones are going to be classified into

two large groups, we are going to see four bones that are two pairs, we are going to see on the sides two

parietal bones, which are the bones of the walls and we are going to see two temporal bones, which are the

bones of time, as there are two on each side, here we will have four bones and then we would have four

odd bones, which from anterior to posterior are going to be the frontal bone, the sphenoid bone,

the occipital bone and I would need to make a cut of skull, here we would then have the frontal,

here we would have the sphenoid, this would be the occipital and then this one that you see here in

yellow would be the ethmoid, then these four bones from anterior to posterior are the ones that

make up the odd bones, so those four more The four pairs plus the two pairs,

would make the 8 bones of the cranial vault, the rest of the bones that I do not name, which are the ones

you see here, are the so-called bones of the face, which we will study in another section,

so our star today is the frontal bone, this skull seen from the side, the

frontal bone in which this book, which is the sóbotta, shows in purple, in lilac, so it is going to be

anatomically composed of three large faces and three edges on the union of those faces,

we are going to have the face that looks forward, making it external, which is what conforms to the forehead

itself, which would be the anterior face, we are going to have a face, we see this sagittal cut, everything

that is going to looking towards the cranial vault that would then be the posterior face, this

anterior face is characterized because it is a smooth face, it is a concave face towards the back or the same thing to say

that it is convex towards the front, while the posterior face is rather concave towards the back ,

then the posterior face with that concavity towards the back, has a series of gyri,

a series of grooves that are internal structures within the brain that make it up, now this

superior view of the skull is going to show you what the posterior face of the frontal bone is, Well, it turns out

that this posterior face is made up of an upper part, which is the one I showed you above,

and a lower sheet. This lower sheet is what in turn forms the roof of the orbit,

of the orbital cavity, which would be the one you see. here and it is the one that also conforms to the

anterior cranial fossa, then the third and last face of the frontal bone is the inferior face,

this one that we see here, which would be the same face, let's say the same inferior lamina of the

posterior face but seen from below, that is, it is what in itself makes up the roof or upper limit

of that eye socket, so that you can understand a little bit well, I brought you a diagram here,

imagine that we are seeing the skull from the side, this in black would then be the face

anterior, let them see that it is convex forward, let's see the posterior face

that remember that it was made up of an upper concave part and a convex upward,

lower part, which was the one that formed part of the roof of the orbital cavity that we

suppose was here, while all of this would then be the anterior cranial fossa and we would have

an inferior face, which is what I put here in blue, which would be like the lower part

of that inferior lamina of the posterior face and this inferior face was the one that itself was in

contact with the ocular orbit, so we are going to see each of the anatomical objections of

this bone, do not detach yourself from the video [Music] I invite you to subscribe here

in the lower right corner click [Music] And don't forget to click like the video,

look at this anterior view of the frontal bone, we are going to start with the

anatomical objections that there are on the anterior face, first here above the place where it is supposed to be

In the nose we are going to find an elevation, we are going to call it the middle frontal eminence, because

it is right in the midline or the other name is the name of glabella, I have also seen it with the

name of glabella with double l, but the name The most anatomical is the middle frontal eminence, now I go beyond it

laterally, we are going to find the lateral frontal eminences, which are what form the

lateral bulges that people have on their forehead, which look much more pronounced

in men, below those eminences. lateral frontals and specifically lateral to the

glabella, we are going to find the supraciliary or superciliary arches, which are the ones that we feel

are above the eyebrows in some people, they are located just behind the eyebrows,

now if we continue laterally after those arches supraciliaries we find the

lateral frontal crest, this lateral frontal crest ends up limiting what is the

clearly anterior portion of the anterior face, because it turns out that this bone, since it is convex, is going

to have a part that looks more laterally, but it is still part of the anterior face and those are going

to be these triangular pits that are called lateral facets of the frontal bone, like this

pit we are going to see right now that they are part of the temporal fossa, which is what we see here

in this circle that is half visible Marked here in that depression, they also call it the

temporal facet of the frontal, but not temporal because it articulates with the temporal bone,

because the frontal does not articulate with the temporal, but temporal because it is part of the floor of that

temporal fossa, this would be what we We see here, in this lateral view we see very well the

middle prominence that would be the glabella and we see the lateral frontal eminences at this level,

now in small people, newborn children, small children,

these frontal bones, this frontal bone is separated by a middle suture, which is called the middle frontal suture

, also known as the metopic suture, is the same, as the child

grows and adolescents begins to erase until in the adult the frontal bone is one ,

just as I showed you at the beginning, let's now look at the posterior face, remember that

the posterior face looks clearly towards the cranial cavity, so that posterior face is the one that is

going to form the anterior cranial fossa, so that you understand this image, this is a superior view

of the skull, this is anterior, everything we see lila, I remind you that it is the frontal bone and this

would be the upper half of this cut, that is, the cap, this would be anterior, notice how

this, it agrees with This structure, then on that posterior surface in the most superior part

, which is this one, we see a large groove, that is the groove for the longitudinal sinus, that longitudinal sinus is also

called the superior sagittal sinus, it is a venous structure that helps run through the blood

of the extra-brain structures, now if we go towards the anterior of that sulcus, we find the

frontal crest, which is what we see here continued in this image, now, we are going to see

that all that large fossa seen in the lid The upper part of that anterior cranial cavity is the famous

frontal fossa. Now let's bring this image a little closer so that you can see the blind foramen.

It is a structure that does not communicate anything. No vessel, no artery, no nerve passes through it. ,

it simply ends in a blind street to tell you something, that's why it's called blind foramen, this one that

you see here, is the lowest part of that frontal crest and it is then between this

yellow bone that is the ethmoid and that anterior crest of the frontal , now this entire notch

that interrupts this entire posterior face is a c-shaped notch, towards the back,

it is the so-called ethmoid notch and what it serves is so that the ethmoid is then articulated

with that frontal bone, all that bone splint that The roof of the orbit and the floor

of the anterior cranial fossa make up the eminences or orbital plates. Notice that in

this eminence or orbital plates there are grooves, some gaps, these grooves are digital impressions

and have to do with the gyri. which has the frontal lobe of the brain,

let's go and look at this image so that you can see clearly where the blind foramen ends,

At this level, as I told you, between the frontal crest and what is the ethmoid, specifically the

cock's comb, the crista galli of the ethmoid, we are now going to go through the lower face, this would then be

the anterior face and this entire lower face, which The first thing we are going to find from anterior to

posterior is the frontal nasal spine, that frontal nasal spine is a structure that serves to

articulate with the bones of the nose, but we will see that when we see the bones of the

face, in another video towards On the side of that frontal spine we find the places where the frontal bone articulates

with two structures, towards the anterior it articulates with the upper jaw bone

and towards the posterior it articulates with the ethmoid, so at this level we are going to see some holes,

which is where The frontal sinuses open, which are airy, pneumatic structures, which

are inside the frontal bone itself that we will see later, then those are the openings

at the mouth of those frontal sinuses, we continue posteriorly and we find the ducts

or ducts . ethmoidal, one is the anterior and the other is the posterior ethmoidal duct,

some neurovascular structures pass through there that then connect the orbit with what is the

ethmoid bone, see that they are crossed by a nostril, by a structure so that you can

see that that is a conduit as such, now the entire slat that makes up the roof of the orbit,

they are or they make up me, it is concave upwards and they make up the orbital fossa, it has a

triangular shape with an anterior base as you can see here, now inside From that large orbital fossa

we are going to give two pits, a medial one which is the trochlear pit that serves to insert the

greater oblique muscle of the eye and a lateral pit that is called the lacrimal pit, which is where

the lacrimal gland is housed. which is a great impression there on that lower surface of the

frontal bone, we are now going to go through the edges that are extremely easy, we are going to have three edges as I

told you, the first edge is the anterior edge, how is the anterior edge formed? Notice

that it is formed by the union of the anterior face with the union or the union of the anterior face with the

inferior face, on that anterior edge we find several anatomical reservations, towards the middle part

we find what is the nasal notch, which is where the nasal spine is located, which is

to articulate, as I told you, with what are the bones of the nose and to articulate with

what is the upper jaw, then laterally we find the entire supraorbital rim,

this supraorbital rim is interrupted In the internal third or at the junction of the internal third

, rather with the external two thirds, through a notch, it is the supra-orbital notch,

through which some vessels with the same name pass. In some people this notch is

completely closed so much so that It does not form a notch, but rather it forms an orifice, anatomically in these

people it is called the supra-orbital orifice, now this process that looks medially,

towards the nasal notch which is this, would be the medial orbital process which is the

maxillary orbital process, because it is to articulate with the upper jaw bone. We would also have

one that is the lateral orbital process or also called the zygomatic process of the

frontal or malar process of the frontal, because it is to articulate with the bone of the same name,

that is, with the zygomatic which is the same malar, from that lateral orbital process the lateral frontal crest emerges

upwards, now at the upper edge we are going to see the union of the

anterior face with the posterior face and that entire upper edge is called parietal edge because it is

for articulation specifically with the parietal bone, while in the lower portion

we are going to see the posterior edge, this entire posterior edge then joins the posterior face with the

lower face and presents what is the ethmoidal notch to articulate with the ethmoid,

but also see This superior view, all of this would be the same posterior order, the frontal also uses

this posterior edge to articulate with the parietal in one part and with everything that is

the sphenoid bone, now to finish we are going to talk about the frontal sinus that I told you were in

two structures that the frontal bone has on each side of the nose, above the nose

to tell you something, these frontal sinuses lead into an opening as you can see here, at the level that

the ethmoid crosses to reach what is the cavity nasal, they are aerated cells,

they are pneumatic, now they are separated from the right side by the left side,

by a large central septum that is not this one, this is the ethmoid, it is a central septum that

is part of the frontal bone, but we would have to make a more anterior cut, this cut is much

more posterior, I remind you that this is a frontal cut of the skull, now the sutures that join

the frontal bone, the frontal bone articulates with many bones, let's see first the

fronto-lacrimal sutures, the lacrimal bone is red and this would be the frontolacrimal suture,

which would have the union with the nasal bones in the frontonasal suture and here we would have the

union with the upper jaw, which would be the frontomaxillary suture, towards the back we see it joining

the sphenoid then it would be the frontal sphenoid suture and towards the side we see how it articulates with

the zygomatic or malar, it would be the frontomalar or frontozygomatic suture, this one that you see here,

at the superoposterior level we see this large suture that joins the parietal bones specifically

the upper edge, that suture is called coronal suture or also known as the

fronto-parietal suture, in the center of that union that coronal suture meets the sagittal suture

at a point called bregma, just as you hear it bregma with g, as well as It is written on the plate,

and finally the frontal bone also articulates with the ethmoid, then in the fronto-

ethmoidal suture, so this has been the entire video friends, I hope you liked the content,

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I'll leave you the links to my videos of the orbital cavity of the other bones

of the skull . so they can better understand the content. Thank you very much for watching my videos