Number of bones in human appendicualar skeleton is

Options

A. 80
B. 126
C. 120
D. 142

Answer

To find the number of bones in the human appendicular skeleton, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Human Skeletal System**: The human skeletal system is divided into two main parts: the axial skeleton and the appendicular skeleton.

2. **Identify the Axial Skeleton**: The axial skeleton includes the skull, vertebral column (spine), and ribcage. It serves as the central framework of the body.

3. **Identify the Appendicular Skeleton**: The appendicular skeleton consists of the bones of the limbs (upper and lower) and the girdles (shoulder girdle and pelvic girdle) that attach the limbs to the axial skeleton.

4. **Count the Total Number of Bones**: In a typical adult human body, there are a total of 206 bones.

5. **Determine the Number of Bones in the Appendicular Skeleton**: The appendicular skeleton contains 126 bones, which include:
- 64 bones in the upper limbs (32 per limb)
- 62 bones in the lower limbs (31 per limb)
- 4 bones in the girdles (2 in the shoulder girdle and 2 in the pelvic girdle)

6. **Conclude the Answer**: Therefore, the number of bones in the human appendicular skeleton is 126.

### Final Answer:
The number of bones in the human appendicular skeleton is **126**.

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