Human Skeleton Anatomy

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Questions and Answers

What percentage of the total body weight does the bone mass in the skeleton make up?

12%
14% (correct)
10%
16%

At what age range does the human skeleton typically reach its maximum mass?

25-30 years (correct)
20-25 years
30-35 years
35-40 years

What is the approximate number of bones in the human skeleton at birth?

250
300
270 (correct)
200

What is the main difference between the axial skeleton and the appendicular skeleton?

<p>The axial skeleton is formed by the vertebral column, rib cage, and skull, while the appendicular skeleton is formed by the limbs (D)</p> Signup and view all the answers

What is the approximate weight of the bone mass in the skeleton for an average person?

<p>10-11 kg (D)</p> Signup and view all the answers

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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.