APPLIED RADIOLOGICAL ANATOMY

ANATOMY

MUSCULOSKELETAL AND SOFT TISSUE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why are the bones of the sacrum fused
A
To provide strength and stability
B
To make the skeleton light weight
C
To reduce the size of the bones
D
To make the skeleton more flexible
Explanation: 

Detailed explanation-1: -The fusion of the vertebrae and the large size of the sacrum forms an ideal base that allows it to support the weight of the entire body.

Detailed explanation-2: -The sacrum is a wedge-shaped piece of bone directly below the lumbar spine. It is made of five fused vertebrae numbered s1 through s5. These five vertebrae are separate in children and young people. They begin to fuse in late adolescence and early adulthood and are usually fully fused by age 30.

Detailed explanation-3: -The sacrum forms the posterior pelvic wall and strengthens and stabilizes the pelvis. Joined at the very end of the sacrum are two to four tiny, partially fused vertebrae known as the coccyx or “tail bone". The coccyx provides slight support for the pelvic organs but actually is a bone of little use.

Detailed explanation-4: -This robust bone can endure a lot of pressure and motion. Along with the coccyx (tailbone), the sacrum provides a stable platform for you to sit upright.

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