In the absence of pregnancy corpus luteum

Options

A. Becomes active and secretes FSH and LH
B. Produces a lot of oxytocin and relaxin
C. Degenerates after some time
D. Is maintained by progesterone

Answer

### Step-by-Step Solution:

1. **Understanding Corpus Luteum**: The corpus luteum is formed from the remnants of the ovarian follicle after ovulation. It plays a crucial role in the menstrual cycle and in maintaining early pregnancy.

2. **Condition of Absence of Pregnancy**: The question specifies the absence of pregnancy, which means that the corpus luteum will not be maintained in its active state.

3. **Evaluating the Options**:
- **Option A**: "Becomes active and secretes FSH and LH" - This is incorrect because the corpus luteum does not secrete FSH and LH; these hormones are secreted by the anterior pituitary gland.
- **Option B**: "Produces a lot of oxytocin and relaxin" - This is also incorrect. Oxytocin is primarily involved in childbirth and lactation, not in the function of the corpus luteum in the absence of pregnancy.
- **Option C**: "Degenerates after some time" - This is the correct answer. In the absence of pregnancy, the corpus luteum will eventually degenerate, leading to a decrease in hormone levels.
- **Option D**: "Is maintained by progesterone" - This is incorrect in the context of the absence of pregnancy. Progesterone is produced by the corpus luteum, but it is not maintained without pregnancy.

4. **Conclusion**: The correct answer is **Option C**: "Degenerates after some time."