The total number of bones in the fore limb of humans is

Options

A. 30
B. 25
C. 28
D. 32

Answer

To find the total number of bones in the forelimb of humans, we can break down the components of the forelimb and count the bones in each section.

1. **Upper Arm Bone**:
- The humerus is the only bone in the upper arm.
- **Count**: 1 bone.

2. **Lower Arm Bones**:
- The lower arm consists of two bones: the radius and the ulna.
- **Count**: 2 bones (1 radius + 1 ulna).

3. **Wrist Bones (Carpals)**:
- The wrist consists of 8 carpal bones.
- **Count**: 8 bones.

4. **Hand Bones (Metacarpals)**:
- The hand has 5 metacarpal bones.
- **Count**: 5 bones.

5. **Finger Bones (Phalanges)**:
- Each finger has 3 phalanges, and the thumb has 2 phalanges.
- Since there are 5 fingers, the total number of phalanges is calculated as follows:
- For 4 fingers: 4 fingers × 3 phalanges = 12 phalanges.
- For 1 thumb: 1 thumb × 2 phalanges = 2 phalanges.
- Total phalanges = 12 + 2 = 14.
- **Count**: 14 bones.

Now, let's sum all the bones together:

- Humerus: 1
- Radius: 1
- Ulna: 1
- Carpals: 8
- Metacarpals: 5
- Phalanges: 14

**Total number of bones in the forelimb** = 1 + 1 + 1 + 8 + 5 + 14 = 30 bones.

Thus, the total number of bones in the forelimb of humans is **30**.