Which of the following statements are incorrect regarding a normal human ?
(i) The skull is dicondlic.
(ii) Metacarplas are are five in numbers.
(iii) Patella is a cup-shaped bone covering and protecting the posterior articular surface of the knee joint. (iv) Scapula is a large triangular flat bone, situated on the ventral side of the thorax.
(v) The pelvic girdle has two coxal bones.

Options

A. (i) and (v)
B. (i) and (ii)
C. (ii) and (v)
D. (iii) and (iv)

Explanation

To determine which statements are incorrect regarding a normal human, we will evaluate each statement one by one.

1. **Statement (i): The skull is dicondylic.**
- The human skull is indeed dicondylic, meaning it has two occipital condyles that articulate with the first cervical vertebra (atlas).
- **Conclusion:** This statement is correct.

2. **Statement (ii): Metacarpals are five in number.**
- The human hand has five metacarpal bones, one for each digit (finger).
- **Conclusion:** This statement is correct.

3. **Statement (iii): Patella is a cup-shaped bone covering and protecting the posterior articular surface of the knee joint.**
- The patella, or kneecap, is a cup-shaped bone that actually protects the anterior (front) surface of the knee joint, not the posterior surface.
- **Conclusion:** This statement is incorrect.

4. **Statement (iv): Scapula is a large triangular flat bone, situated on the ventral side of the thorax.**
- The scapula (shoulder blade) is a large triangular flat bone, but it is located on the dorsal (back) side of the thorax, not the ventral (front) side.
- **Conclusion:** This statement is incorrect.

5. **Statement (v): The pelvic girdle has two coxal bones.**
- The pelvic girdle is indeed composed of two coxal bones (hip bones), one on each side.
- **Conclusion:** This statement is correct.

**Final Answer:**
The incorrect statements regarding a normal human are:
- Statement (iii): "Patella is a cup-shaped bone covering and protecting the posterior articular surface of the knee joint."
- Statement (iv): "Scapula is a large triangular flat bone, situated on the ventral side of the thorax."