Pituicytes are under the control of

Options

A. adenohypophysis
B. hypothalamus
C. Neurohypophysis collects and stores vasopressin and oxytocin.
D. both a and c

Explanation

**Step-by-Step Solution:**

1. **Identify Pituicytes**: Pituicytes are specialized glial cells located in the posterior lobe of the pituitary gland. They play a role in supporting the function of the neurosecretory cells.

2. **Understand the Function of Pituicytes**: These cells are involved in the storage and release of hormones, specifically oxytocin and vasopressin (also known as antidiuretic hormone, ADH).

3. **Hormone Production**: While pituicytes release oxytocin and vasopressin, it is important to note that these hormones are actually produced in the hypothalamus.

4. **Control Mechanism**: The release of oxytocin and vasopressin from pituicytes is regulated by the hypothalamus. The hypothalamus sends signals to the posterior pituitary gland, where pituicytes release these hormones into the bloodstream.

5. **Evaluate Options**: The question provides several options regarding what controls pituicytes:
- Option 1: Adenohypophysis (anterior pituitary)
- Option 2: Hypothalamus
- Option 3: Neurohypophysis (posterior pituitary)
- Option 4: Both A and C

6. **Select the Correct Answer**: Since pituicytes are under the control of the hypothalamus, the correct answer is **Option 2: Hypothalamus**.