Pituitary/Hypothalamus

Question 1

What are the two parts of the pituitary, what forms them, and what feeds them?

Answer 1

Adenohypophysis, from oral cavity, superior hypophyseal artery. Neurohypophysis, from brain, inferior hypophyseal artery.

Question 2

In adenohypophysis, what are the basophils?

Answer 2

Gonadotrophs releasing FSH, LH. Thyrotrophs releasing TSH. Corticotrophs releasing ACTH

Question 3

In adenohypophysis, what are acidophils?

Answer 3

Somatotrophs releasing GH. Lactotrophs releasing prolactin.

Question 4

Is the adenohypophysis vascular with fenestrated capillaries?

Answer 4

Yes

Question 5

What is the purpose of median eminence?

Answer 5

Release releasing hormones into superior plexus, then they leave through inferior plexus.

Question 6

How does the neurohypophysis release hormones?

Answer 6

Neuron cell bodies secrete ADH and oxytocin as herring granules down axon.

Question 7

Explain ultrashort, short, and long feedback loops?

Answer 7

Ultrashort is hypothalamus product, short is adenohypophysis product, long is gonad product

Question 8

What do pituicytes do?

Answer 8

Impede release of herrings granules