Diagnosis Of Pregnancy

Let's analyze each statement: - A - "In human pregnancy, the major organ systems are formed at the end of 12 weeks" is true. Organ systems are usually developed by the end of the first trimester.
- B - "In human pregnancy, the major organ systems are formed at the end of 8 weeks" is incorrect. The formation of major organ systems typically happens by the end of the first trimester, i.e., at 12 weeks.
- C - "In human pregnancy, heart is formed after one month of gestation" is true. The heart starts forming early in the pregnancy, typically around 3-4 weeks.
- D - "In human pregnancy, limbs and digits develop by the end of second month" is true. Limbs and digits are visibly formed by the end of the second month.
- E - "In human pregnancy, the appearance of hair is usually observed in the fifth month" is true. Hair development generally occurs in the second trimester. Thus, the correct answer is A, C, D and E Only.