Question

A 36-year-old woman has a tumor removed from the hypothalamus. As a 1 point result both the supraoptic and paraventricular nuclei are ablated, but the remaining hypothalamus is intact. What is the major effect thatthis would have on pituitary histology? It will produce hypertrophy of cells in the anterior pituitary. It will eliminate the ability to detect Herring bodies in the posterior pituitary. It will produce degeneration of anterior pituitary cells. It will not affect pituitary histology It will cause hypertrophy in the neurons of the posterior pituitary

Answer 1

Correct answer is option b - It will eliminate the ability to detect Herring bodies in posterior pituitary.

Explanation: Supraoptic and paraventricular nuclei are neurosecretory cells which control secretion of oxytocin and ADH from posterior lobe of pituitary gland. Fibers from supraoptic nuclei are related with ADH secretion whereas paraventricular nuclei is associated with oxytocin secretion. These hormones remain stored in Herring bodies. So if Supraoptic and paraventricular nuclei are removed, Herring body will also became non functional and detection of Herring bodies will not be possible. so correct answer is option b.