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Flashcards in Hormones table Deck (75)
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1

What does the Hypothalamus secrete?

- Releasing hormones: TRH, GnRH, CRH, GHRH,
- Inhibiting hormones: Somatostatin, PIH (Prolactin inhibitory hormone...also called dopamine.

2

What is the chemical nature of all things released by the hypothalamus?

All peptides except for PIH (amine)

3

Major stimuli for secretion

blank

4

What is released by the posterior pituitary gland?

Oxytocin and Vasopressin

5

Function of oxytocin

Let down breast milk by increasing the contractility of the myoepithelial cells, Uterine smooth muscle contraction

6

Function of vasopressin

Decrease water excretion, (aquaporins)
Increase contractility of smooth muscle which increases blood pressure

7

Major stimuli for vasopressin release?

Low plasma volume or high plasma osmlarity

8

What are the major hormones released by the Anterior Pituitary gland

Growth Hormone
Adrenocorticotrophic hormone
Thyroid Stimulating Hormone
Leutenizing hormone
Prolactin
Follicle Stimulating hormone

9

Growth hormone is responsible for what?

- Growth, organic metabolism; secretion of somatomedin by liver and cartilage

10

Thyroid Stimulating Hormone does what?

Stimulates synthesis and secretion of thyroid hormones. Increases size of the thyroid gland.

11

Adrenocorticotrophic hormone does what?

Adrenal cortex (mainly increases in cortisol. Some increase in androgens and aldosterone)

12

Prolactin does

Increases milk synthesis in the breasts, also stimulates breast development and inhibits ovulation

13

Leutenizing hormone does what

Stimulates testosterone synthesis on Leydig cells of the testes.
Stimulates ovulation, formation of the corpus luteum, estrogen and progesterone synthesis in ovaries

14

Follicle stimulating Hormone does qhat

Sperm maturation in the testis, follicular development and estrogen in the ovaries.

15

Which cell types in the anterior pituitary are classified as basophils

Everything except GH and PRL

16

GH and PRL are

Acidophils

17

What hormones are released by the adrenal cortex?

Cortisol
Adrenal Androgens (DHEA and adrostenedione)
Aldosterone

18

All of the hormones released by the adrenal cortex are of what chemical nature?

Steroids

19

Cortisol does what?

Stimulates gluconeogenesis; inhibits inflammatory response, suppresses immune response, enhances vascular response to catecholamines

20

Aldosterone does what

increases Na reabsorption in the kidneys, increases K secretion, inc H secretion

21

Adrenal androgens do what?

stimulate spermatogenesis and male secondary sex characteristics.

22

Just gonna do some actions for a while

ok

23

What hormones does the Endocrine Pancreas secrete?

Insulin
Glucagon

24

What is the main function of insulin?
Glucagon?

insulin decreases blood glucose
glucagon increases blood glucose

25

What hormones are secreted by the placenta?

- Human Chorionic Gonadotropin (hCG)
- Human Placental Lactogen (HPL) or human chorionic sommatotropin
- Estriol
- Progesterone

26

What does HCG do?

Stimulates Estrogen and Progesteronesynthesis in the corpus luteum of early pregnancy

27

What does HPL do?

Growth like and Prolactin like actions during pregnancy

28

What does Estradiol do?

stimulates growth and development of female repro system, follicular phase of menstrual cycle, development of breasts, prolactin; maintians pregnancy

29

What does Prgesterone do?

Stimulates the Luteal phase of the Menstrual cycle

30

What hormones are produced by the ovaries?

Estradiol and Progesterone