Questions and Answers
What percentage of the total body weight does the bone mass in the skeleton make up?
14%
At what age range does the human skeleton typically reach its maximum mass?
25-30 years
What is the approximate number of bones in the human skeleton at birth?
270
What is the main difference between the axial skeleton and the appendicular skeleton?
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What is the approximate weight of the bone mass in the skeleton for an average person?
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Study Notes
Human Skeleton Overview
- The human skeleton is the internal framework of the human body.
- It is composed of approximately 270 bones at birth.
- This number decreases to around 206 bones by adulthood due to bone fusion.
Bone Mass
- The bone mass in the skeleton makes up about 14% of the total body weight.
- The average bone mass is around 10-11 kg for an average person.
- Bone mass reaches its maximum between the ages of 25 and 30.
Skeletal Division
- The human skeleton can be divided into two main parts: axial skeleton and appendicular skeleton.
Axial Skeleton
- The axial skeleton is formed by the vertebral column, rib cage, skull, and other associated bones.
Appendicular Skeleton
- The appendicular skeleton is attached to the axial skeleton.
- It is formed by the shoulder girdle, pelvic girdle, and bones of the upper and lower limbs.
