Skeletal System: Types of Bones in Under 10 Minutes [Anatomy Physiology Human Body]

Summary

This video offers a quick and engaging guide to understanding the five types of bones in the human body: long, short, flat, sesamoid, and irregular. Using easy-to-remember tricks like associating bones with words like 'Limb,' 'Sprain,' and 'Fort,' viewers can quickly master the different bone categories and their examples. The video covers bones like the humerus, clavicle, carpal, tarsal, and skull bones, explaining their function and shape. With memorable mnemonics and clear examples, this educational video simplifies anatomy for learners of all levels.

Takeaways

• 😀 The human body contains 206 bones, which are classified into five main types: long bones, short bones, flat bones, sesamoid bones, and irregular bones.
• 😀 Long bones are primarily found in the arms and legs, and can be remembered using the letter 'L' for 'Limb' and 'Clavicle'.
• 😀 Examples of long bones include the humerus, femur, tibia, fibula, and the clavicle, totaling 90 long bones in the average adult.
• 😀 Short bones are cube-shaped and are mainly found in the wrist and ankle. The mnemonic 'S' for 'Sprain' helps recall this classification.
• 😀 Short bones include the carpal bones of the wrist and tarsal bones of the ankle, totaling 28 short bones in the average adult.
• 😀 Sesamoid bones are seed-shaped bones that develop within tendons, like the pisiform and patella, which are common in most adults.
• 😀 The average adult has 4 sesamoid bones, typically 2 patella and 2 pisiform bones, but some people may have extra sesamoid bones.
• 😀 Flat bones are thin and broad, located where protection of organs is necessary, such as the skull and rib cage.
• 😀 The mnemonic 'F' for 'Fort' helps remember that flat bones protect vital organs. Key examples include the sternum, ribs, and certain skull bones.
• 😀 Irregular bones do not fit the other categories and include bones of the spine, hips, parts of the skull, and bones in the ear.
• 😀 The irregular bones in the spine, hips, and skull, along with the malleus, incus, and stapes in the ear, total 48 irregular bones in the average adult.

Q & A

How many bones does an average adult human have?

An average adult human has 206 bones.

What are the main categories for classifying bones in the body?

Bones can be categorized into long bones, short bones, flat bones, sesamoid bones, and irregular bones.

What is the mnemonic for remembering long bones, and what does it represent?

The mnemonic for long bones is 'L' for 'Limb', which helps remember that most bones in the arms and legs are long bones. 'L' also helps remember the clavicle (collarbone) as a long bone.

Where are short bones primarily found, and what is the mnemonic to remember them?

Short bones are primarily found in the wrist and ankle. The mnemonic is 'S' for 'Sprain', as these joints are common places for sprains, which helps remember the bones in these areas are short bones.

What makes sesamoid bones unique, and how can they be remembered?

Sesamoid bones are seed- or pea-shaped bones found within tendons, such as the pisiform and patella. They can be remembered by associating them with 'sesame seeds' or 'pea-shaped'.

What is the main function of flat bones, and where are they found?

Flat bones are thin and broad, and they function to protect vital organs. They are primarily found in the skull, rib cage, and scapula.

How can the irregular bones be remembered?

Irregular bones can be remembered by their 'I-shape', which represents their locations in the hips, spine, skull, and ears.

What are sutural bones, and do all people have them?

Sutural bones, also known as wormian bones, are small accessory bones sometimes found between cranial sutures. Not everyone has them.

What bones are considered short bones in the wrist and ankle?

Short bones in the wrist include the carpal bones (scaphoid, lunate, triquetrum, hamate, capitate, trapezoid, trapezium), and in the ankle, the tarsal bones (talus, navicular, cuboid, calcaneus, and the 3 cuneiforms).

What is the total number of irregular bones in the average adult human body?

An average adult human has 48 irregular bones, including the bones of the hips, spine, skull, and ears.