A temporary endocrine gland in the human body is

Options

A. Pineal gland
B. corpus cardiacum
C. corpus luteum
D. Corpus allatum

Answer

**Step-by-Step Solution:**

1. **Understanding Endocrine Glands**: Begin by recognizing what endocrine glands are. They are glands that secrete hormones directly into the bloodstream without using ducts.

2. **Identifying Types of Endocrine Glands**: There are both permanent and temporary endocrine glands in the human body. Permanent glands include the pineal gland, thyroid gland, pancreas, and adrenal gland.

3. **Analyzing the Options**:
- **Pineal Gland**: This is a permanent endocrine gland that secretes melatonin, which regulates sleep-wake cycles. Therefore, it is not the correct answer.
- **Corpus Cardicum**: This is also a permanent structure that acts as a neurohemal organ, storing neurohormones. It is not a temporary gland.
- **Corpus Luteum**: This is formed from the ruptured Graafian follicle after ovulation. It secretes progesterone, which is essential for maintaining the uterine lining during pregnancy. It is temporary because it degenerates if fertilization does not occur.
- **Corpus Alatum**: Similar to the corpus cardicum, this is a paired neurohemal organ and is also not temporary.

4. **Conclusion**: After analyzing all the options, the corpus luteum is identified as the only temporary endocrine gland among the choices provided.

**Final Answer**: The temporary endocrine gland in the human body is the **Corpus Luteum**.

---