Find the correct statement: (A) In human pregnancy, the major organ systems are formed at the end of 12 weeks. (B) In human pregn…

Question

Find the correct statement: (A) In human pregnancy, the major organ systems are formed at the end of 12 weeks. (B) In human pregnancy the major organ systems are formed at the end of 8 weeks. (C) In human pregnancy heart is formed after one month of gestation. (D) In human pregnancy, limbs and digits develop by the end of second month. (E) In human pregnancy the appearance of hair is usually observed in the fifth month.

Choose the correct answer from the options given below:

1. A. A and E only
2. B. B and C only
3. C. B, C, D and E only
4. D. A, C, D and E only (Correct answer)

Correct Answer

Option D — A, C, D and E only

Detailed Solution & Explanation

The correct answer is A, C, D and E only.

Key Points

• By the end of 12 weeks (first trimester) most major organ systems are formed (A correct; so B is wrong).
• The embryo's heart forms after one month of gestation (C).
• Limbs and digits develop by the end of the second month (D).
• The first movements and appearance of hair on the head are usually seen during the fifth month (E).