Each of the following options has a there two equal number of both bones, which one does not

Options

A. Number of bones in the right upper limb and number of bones in the left lower limb
B. Number of bones in the cranium and number of bones in the right wrist
C. Number of true ribs and number of bone in the figure of the left hand
D. Number of cervical vertebrae in the body and number of ankle bones in the body

Answer

To solve the question regarding which option does not have an equal number of bones in the human body, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding the Structure of Bones**:
- The human body has various bones grouped into different regions such as the skull, limbs, ribs, and vertebrae. Each region has a specific number of bones.

2. **Analyzing the Upper and Lower Limbs**:
- Both the upper limb (arm) and lower limb (leg) consist of bones. The upper limb has one humerus, two forearm bones (radius and ulna), and a total of 30 bones when including the wrist (carpals), palm (metacarpals), and fingers (phalanges).
- The lower limb has one femur, two leg bones (tibia and fibula), and also totals to 30 bones, including the ankle (tarsals), foot (metatarsals), and toes (phalanges).

3. **Counting Bones in the Skull**:
- The skull consists of 22 bones: 8 cranial bones and 14 facial bones. This is a fixed number and does not vary between individuals.

4. **Counting Ribs**:
- The human rib cage typically has 12 pairs of ribs, which totals to 24 ribs. However, when considering only the true ribs, there are 7 pairs (14 bones).

5. **Counting Cervical Vertebrae**:
- The cervical vertebrae in the neck region are consistently 7 in number across all mammals, including humans.

6. **Counting Ankle Bones**:
- The ankle bones, known as tarsals, number 7 in total. This is the same as the number of cervical vertebrae.

7. **Identifying the Odd One Out**:
- When comparing the counts:
- Skull: 22 bones
- Ribs: 14 true ribs
- Cervical Vertebrae: 7
- Ankle Bones: 7
- The upper limb and lower limb both have 30 bones, but the skull has a different total (22 bones), which does not match the others.

### Conclusion:
The option that does not have an equal number of bones compared to the others is the **skull**, which has 22 bones.