Long Bones Structure Quiz

Long bones have an elongated shaft (diaphysis) and two expanded ends (epiphyses) with smooth and articular surfaces. The shaft typically has 3 surfaces separated by 3 borders, a central medullary cavity, and a nutrient foramen directed away from the growing end. Examples include (a) typical long bones like humerus, radius, ulna, femur, tibia, and fibula; (b) miniature long bones with only one epiphysis like metacarpals, metatarsals, and phalanges; and (c) modified long bones with no medullary cavity like the clavicle.

Short bones usually have a cuboid, cuneiform, trapezoid, or scaphoid shape. Examples include tarsal and carpal bones.

Flat bones resemble shallow plates and form boundaries of certain body cavities, such as the vault of the skull, ribs, sternum, and scapula.

<p>Examples of irregular bones include vertebrae, hip bone, and bones in the base of the skull.</p> Signup and view all the answers

<p>Pneumatic bones are irregular bones containing large air spaces lined by epithelium. Examples include the maxilla, sphenoid, ethmoid, etc. They make the skull light in weight, help in resonance of voice, and act as air conditioning chambers for the inspired air.</p> Signup and view all the answers