In human adult females oxytocin:-

Options

A. Stimulates pituitary to secrete vassopressin
B. Causes strong uterine contractions during parturition
C. is secreted by anterior pituitary
D. stimulates growth of mammary glands

Answer

### Step-by-Step Solution:

1. **Understanding Oxytocin**: Oxytocin is a hormone that plays a crucial role in various physiological processes in human females. It is primarily known for its role during childbirth and lactation.

2. **Source of Oxytocin**: Oxytocin is produced in the hypothalamus and is stored and released by the posterior pituitary gland. It is important to note that it is not secreted by the anterior pituitary.

3. **Function During Parturition**: One of the key functions of oxytocin is to stimulate strong uterine contractions during parturition (the process of giving birth). This helps in the delivery of the baby.

4. **Distinguishing Other Hormones**:
- Oxytocin does not stimulate the secretion of vasopressin; vasopressin (also known as antidiuretic hormone) is also produced by the hypothalamus but is released from the posterior pituitary independently.
- Oxytocin is not responsible for the growth of mammary glands; this function is primarily attributed to prolactin, which is secreted by the anterior pituitary.

5. **Conclusion**: Based on the functions of oxytocin, the correct statement regarding its role in human adult females is that it causes strong uterine contractions during parturition.

### Final Answer:
**In human adult females, oxytocin causes strong uterine contractions during parturition.**

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