Question

All of the following are true regarding hypothalamic control of homeostasis, except one. Choose the exception. Group of answer choices
1. Neurons in the periventricular zone of the hypothalamus release hypophysiotropic hormones
2. Parvocellular neurons in the periventricular zone of the hypothalamus directly innervate glandular cells in the anterior pituitary.
3. Magnocellular neurons in the hypothalamus release neurohormones into the posterior pituitary
4. A lesion in the anterior pituitary could result in dwarfism

Answer 1

All of the following are true regarding hypothalamic control of homeostasis, except a lesion in the anterior pituitary could result in dwarfism.

Option D

Explanation:

Anterior pituitary gland is the seat of the hormonal control all over the body. Hypothalamus is the actual secreting part of the brain which secretes the hormones. The posterior pituitary gland secretes directly from the hypothalamus.

The secretions of the anterior pituitary gland is brought by the blood vessels upto the anterior pituitary from where they are secreted. A tumour in the hypothalamus will cause the excess secretion of the growth hormones and the Thyroid stimulating hormones. That will cause gigantism.