3D Anatomi Tulang : Os Clavicula (tulang selangka)

Summary

The video explains the anatomy of the clavicle (collarbone), focusing on its structure, parts, and functions. It describes the clavicle’s S-shape, with the medial (sternal) end connecting to the manubrium of the sternum and the lateral (acromial) end connecting to the scapula. Key anatomical features like the tuberculum conoideum and facies articularis are discussed, along with the attachment points for ligaments such as the coracoclavicular ligament. The video also highlights the role of the clavicle in connecting various skeletal components and the significance of its articulation points in human anatomy.

Takeaways

• 🔍 The clavicle, or collarbone, has two sides: the right and left, located subcutaneously and shaped like the letter 'S'.
• 📍 The clavicle is located above the T1 vertebra and has a curved shape with a convex front and concave lateral half.
• ⚖️ The clavicle has two extremities: the medial end (extremitas sternalis) which articulates with the manubrium of the sternum, and the lateral end (extremitas acromialis) which articulates with the acromion of the scapula.
• 🦴 Each extremity has articular surfaces for joint connections: facies articularis acromialis on the lateral side and facies articularis sternalis on the medial side.
• 🧩 The clavicle features several bony landmarks, including the tuberculum conoideum, which serves as an attachment for the ligamentum conoideum.
• 🔗 The ligamentum conoideum connects the clavicle to the coracoid process of the scapula.
• 💪 Another important landmark is the linea trapezoidea, which is the attachment site for the ligamentum trapezoideum.
• 📏 The ligamentum trapezoideum also connects the clavicle to the coracoid process of the scapula, forming part of the coracoclavicular ligament.
• 🧠 There is a groove on the clavicle called the sulcus musculi subclavii, where the subclavius muscle attaches.
• 🛠️ The tuberositas costalis or impressio ligamentum costoclaviculare is the attachment point for the ligamentum costoclaviculare, connecting the clavicle to the first rib (costa).

Q & A

What is the location of the clavicle in the human body?

The clavicle is located subcutaneously above the sternum (T1), and it is shaped like an 'S'.

How many ends does the clavicle have?

The clavicle has two ends: the sternal end and the acromial end.

What is the function of the sternal end of the clavicle?

The sternal end of the clavicle, also known as the medial end, articulates with the manubrium of the sternum.

What is the term for the lateral end of the clavicle?

The lateral end of the clavicle is called the acromial end, which articulates with the acromion process of the scapula.

What is the tubercle on the clavicle called and what is its function?

The tubercle on the clavicle is called the conoid tubercle, and it serves as the attachment site for the conoid ligament which connects the clavicle to the coracoid process of the scapula.

What is the term for the medial tubercle of the clavicle?

The medial tubercle of the clavicle is also known as the sternal tubercle, and it serves as the attachment site for the costoclavicular ligament.

What is the costal tuberosity on the clavicle and where is it located?

The costal tuberosity is a roughened area on the inferior surface of the clavicle, near its sternal end, where the costoclavicular ligament attaches.

What is the subclavius muscle's insertion point on the clavicle?

The subclavius muscle inserts onto the inferior surface of the clavicle, near its sternal end.

What is the significance of the clavicle's shape in terms of its function?

The 'S' shape of the clavicle allows it to provide stability to the shoulder joint while also allowing a wide range of motion.

How does the clavicle contribute to the formation of the pectoral girdle?

The clavicle, along with the scapula, forms the pectoral girdle which supports the arm and allows for its movement.

What is the role of the ligaments attached to the clavicle in the shoulder's stability?

The ligaments attached to the clavicle, such as the conoid and trapezoid ligaments, provide stability to the shoulder by connecting the clavicle to the scapula and sternum.