Endocrine System-4 Flashcards Preview

Anatomy and Phisiology > Endocrine System-4 > Flashcards

Flashcards in Endocrine System-4 Deck (16):
1

What is PRF?

Prolactin releasing factor

1) released by hypothalamus

2) stimulates release of PRL (prolactin) by anterior pituitary gland

2

PIH

Prolactin inhibiting hormone

- both men and women have this

-it’s role is unknown

3

What do prolactin and oxytocin do together?

They work together to:

Prolactin-stimulates milk production

Oxytocin-releases

4

Because of its role in milk production, prolactin levels are...

Controlled by circulating progesterone and estrogen

5

Why does the menstrual cycle in women occur?

Because of rising and falling levels of estrogen and progesterone

6

Why does breast tenderness during the menstrual cycle occur?

Because of a brief rise in prolactin levels

7

What is GH-RH and what is it made by?

Growth hormone-releasing hormone

Made by the hypothalamus

8

What does GH-RH cause?

The release of GH by the anterior pituitary

9

Adipose tissue GH promotes

Release of fatty acids

10

Liver GH promotes

The breakdown of glycogen thus elevating blood sugar levels (aka diabetogenic effect)

11

Somatomedins

- cartilage and bone growth

- muscle protein synthesis and growth

12

Giantism

Hypersecretion of GH in children

-it’s caused by over production of growth hormone in childhood before the long epiphyses closes resulting in adult height between 7 feet and 9 feet tall

13

Acromegaly

Hypersecretion of the growth hormone in adults

Notice enlarged hands, nose and jaw

14

Dwarfism

-considered to be an adult height of under 4 feet

- can be caused by about 200 distinct medical conditions

15

Achondroplastic dwarfism

NOT pituitary dwarfism but accounts for about 70% of all dwarfism cases.

Body isn’t proportional

16

Treatment of pituitary dwarfism?

Supplemental GH before epiphyseal plate closes