Oxytocin is released from

Options

A. Adenohypophysis (Anterior lobe)
B. Adenohypophysis (Posterior lobe)
C. Hypothalamus
D. Neurohypophysis

Answer

**Step-by-Step Solution:**

1. **Understanding Oxytocin**: Oxytocin is a hormone that plays a significant role in various bodily functions, particularly in stimulating contractions of smooth muscles, such as those in the uterus during childbirth.

2. **Identifying the Source of Oxytocin**: To determine where oxytocin is released from, we need to look at the anatomy of the pituitary gland, which is divided into two main parts: the adenohypophysis (anterior lobe) and the neurohypophysis (posterior lobe).

3. **Role of the Hypothalamus**: The hypothalamus is responsible for producing oxytocin. However, it does not release it directly into the bloodstream.

4. **Storage and Release of Oxytocin**: Once oxytocin is produced in the hypothalamus, it is transported down to the neurohypophysis (posterior pituitary), where it is stored. The neurohypophysis is responsible for the release of oxytocin into the bloodstream when needed.

5. **Conclusion**: Therefore, the correct answer to the question "Oxytocin is released from" is the neurohypophysis (posterior pituitary).

**Final Answer**: Oxytocin is released from the neurohypophysis (posterior pituitary).

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