Neuroendocrine system

Question 1

What is the portal venous system?

Answer 1

Capillary bed pools into another without going through the heart; transports one region of products into another with relatively high concentration

Question 2

Metabolism is regulated by the endocrine system

Answer 2

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Question 3

What regulates glycogen lysis?

Answer 3

Epinephrine

Question 4

What is gluconeogenesis regulated by?

Answer 4

Stimulated by catabolic hormones (GH), glucagon

Question 5

What is lipolysis regulated by?

Answer 5

• Stimulated by epinephrine, norepinephrine, ghrelin, GH, testosterone, and cortisol

Question 6

Where is GH stored, and by what?

Answer 6

Stored and secreted by somatotropin, in the cells of the ant pit gland

Question 7

What causes gigantism?

Answer 7

Pituitary tumours press on somatrotroph cells which secretes GH in gradually increasing amounts

Question 8

Mechanisms by which height is regulated

Answer 8

Stimulation of cell division; or multiplication of cartilage chondrocytes; the amount of GH decreases with age