AP BIOLOGY

ANIMAL PHYSIOLOGY

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the number of bones that compose the adult skeleton?
A
205
B
206
C
208
D
200
Explanation: 

Detailed explanation-1: -The adult human skeleton is made up of 206 bones. These include the bones of the skull, spine (vertebrae), ribs, arms and legs.

Detailed explanation-2: -There are typically around 270 bones in human infants, which fuse to become 206 to 213 bones in the human adult. The reason for the variability in the number of bones is because some humans may have a varying number of ribs, vertebrae, and digits.

Detailed explanation-3: -The axial skeleton, comprising the spine, chest and head, contains 80 bones. The appendicular skeleton, comprising the arms and legs, including the shoulder and pelvic girdles, contains 126 bones, bringing the total for the entire skeleton to 206 bones.

Detailed explanation-4: -Every single person has a skeleton made up of many bones. These bones give your body structure, let you move in many ways, protect your internal organs, and more. It’s time to look at all your bones-the adult human body has 206 of them!

Detailed explanation-5: -By adulthood, people have between 206 and 213 bones. The reason for the difference is that some people have more or fewer bones in their ribs, vertebrae, fingers, and toes. The largest bone in the human body is the thighbone, or femur, and the smallest is the stapes in the middle ear, at around 3 millimeters long.

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