MCAT Hormones Flashcards

1
Q

Hypothalamus Hormone

A

Peptides
Releasing and Inhibiting factors
Targets the anterior pituitary and modifies activity

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2
Q

growth hormone (peptide) is found where

A

anterior pituitary

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3
Q

what does the growth hormone do

A

increase bone and muscle growth and increases cell turnover rate

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4
Q

where is prolactin (peptide) found

A

anterior pituitary gland

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5
Q

what does prolactin do

A

target = mammary gland

effect =milk production

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6
Q

where is the tropic hormone thyroid stimulating hormone found

A

anterior pituitary

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7
Q

what does the thyroid stimulating hormone do

A
target = thyroid
effect = synthesis and release of TH
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8
Q

where is the tropic hormone adrenocoricotropic hormone found

A

anterior pituitary

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9
Q

what does adrenocorticotropic hormone do

A

increase growth and secretory activity of the adrenal cortex

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10
Q

where is the gonadotropic hormone luteinizing hormone found

A

anterior pituitary

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11
Q

what does the luteinizing hormone do

A
target = ovary
effect = ovulation 
target = testes
effect = testosterone synth
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12
Q

where is the gonadotropic hormone follicle stimulating hormone found

A

anterior pituitary gland

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13
Q

what does the follicle stimulating hormone do

A
target = ovary 
effect = follicle development
target = testes
effect = spermatogenesis
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14
Q

where is the antidiuretic hormone found

A

posterior pituitary

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15
Q

what does the antidiuretic hormone do

A
target = kidney
effect = water retention
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16
Q

where is oxytocin found

A

posterior pituitary

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17
Q

what does oxytocin do

A
target = breast
effect = milk letdown
target = uterus
effect = contraction
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18
Q

where is the thyroid hormone found (aka thyroxine)

A

thyroid

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19
Q

what does the thyroid hormone do

A

for a child necessary for physical and mental development

for an adult increase metabolic rate and temperature

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20
Q

where is the calcitonin hormone found

A

in the thyroid C cells

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21
Q

what does calcitonin do

A
target = bone and kidney
effect = lowers serum [Ca2+]
22
Q

where is the parathyroid hormone found

A

parathyroid

23
Q

what does the parathyroid do

A
target = bone, kidney and small intestine
effect = raises serum [Ca2+]
24
Q

where is the thymosin hormone found

A

thymus

25
Q

what does the thymosin hormone do

A

only in children

T-cell development

26
Q

where is epinephrine found

A

adrenal medulla

27
Q

what does epinephrine do

A

rapid sympathetic stress response

28
Q

where is cortisol (aka glucocorticoid) found

A

adrenal cortex

29
Q

what does cortisol do

A

longer term stress response

increases blood glucose concentrations
increases protein catabolism

decreases inflammation and immunity

etc.

30
Q

where is aldosterone (aka mineralocorticoid) found

A

adrenal cortex

31
Q

what does aldosterone do

A
target = kidnet
effect = increase Sodium reabsorption to increase blood pressure
32
Q

where are the sex steroids found

A

adrenal cortex

33
Q

what do the sex steroids do

A

not normally important but an adrenal tumor can overproduce these causing masculinization or feminization

34
Q

where is insulin found

A

endocrine pancreas (islets of langerhans)

35
Q

what does insulin do

A

decrease blood glucose concentrations and increase glycogen and fat storage

36
Q

what cells secrete insulin

A

beta cells

37
Q

what cells secreate glucagon

A

alpha cells

38
Q

where is glucagon found

A

endocrine pancreas (islets of langerhans)

39
Q

what does glucagon do

A

increase blood glucose concentrations and decrease glycogen and fat storage

40
Q

what cells secrete somatostatin

A

SS - S cells

41
Q

where is somatostatin found

A

endocrine pancreas

42
Q

what does somatostatin do

A

inhibits many digestive processes

43
Q

where is testosterone found

A

testes

44
Q

what does testosterone do

A

male characteristics

spermatogenis

45
Q

where is estrogen found

A

ovaries and placenta

46
Q

what does estrogen do

A

female characteristics

endometrial growth

47
Q

where is progesterone found

A

ovaries and palceta

48
Q

what does progesterone do

A

endometrial secretion

pregnancy

49
Q

where is the atrial natriuretic factor found

A

heart

50
Q

what does the atrial natriuretic factor do

A
target = kidney
effect = increases urination to decrease blood pressure
51
Q

where is erythropoietin found

A

kidney

52
Q

what does erythropoietin do

A
target = bone marrow
effect = RBC synthesis