Hormones of the human body Flashcards

1
Q

What does ADH stand for?

A

Antidiuretic hormone

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2
Q

What does ADH do?

A

It is stimulated when you are dehydrated. It increases blood osmolarity (by causing the kidneys to release less water, decreasing urine production). More ADH = less urine / Less ADH = more urine. Also this acts to maintain blood pressure.

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3
Q

Where is ADH produced?

A

hypothalamus

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4
Q

What part of the body secretes ADH in the boodstream?

A

Posterior pituitary

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5
Q

What does RAAS stand for?

A

Renin-Angiotensin-Aldosterone System

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6
Q

What is the stimulus for RAAS?

A

low blood pressure

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7
Q

Where is renin secreted from and why?

A

The kidneys sense low blood pressure and secrete renin into the blood

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8
Q

What does renin do?

A

converts angiotensinogen (a precursor of angiotensin that is produced in the liver) into angiotensin I

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9
Q

How does angiotensin I convert to angiotensin II?

A

the enzyme ACE (that is from the lungs)

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10
Q

What does angiotensin II do?

A

constricts blood vessels increasing blood pressure. stimulates the release of ADH; increasing blood pressure. AND stimulated adrenal cortex to secrete aldosterone.

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11
Q

Where is aldosterone secreted from?

A

the adrenal cortex

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12
Q

what does aldosterone do?

A

Promote reabsorption of Na+ in the distal convoluted tubule and collecting duct./ helps control the balance of water and salts in the kidney by keeping Na+ in and releasing potassium from the body.

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13
Q

What is the outcome of RAAS?

A

blood volume and pressure is increased.

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14
Q

What does ANH stand for?

A

Atrial Natriuretic hormone

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15
Q

What does ANH do?

A

lowers blood pressure

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16
Q

Where is the sensor for ANH?

A

The atria in the heart

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17
Q

What is the outcome of ANH?

A

Blood pressure is decreased

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18
Q

What is included in lipid-derived hormones?

A

steroid hormones like estrogen and testosterone

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19
Q

What are two examples of steroid hormones?

A

estrogen and testosterone

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20
Q

Where on the cell is the hormone receptor complex for a lipid-derived hormone?

A

inside the cell

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21
Q

What 2 are examples of amino acid-derived hormones?

A

tyrosine and tryptophan

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22
Q

What do the majority of amino acid-derived hormones names end with?

A

“ine”

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23
Q

What are three examples of peptide hormones?

A

ADH, insulin, and oxytocin

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24
Q

Where on the cell is the hormone receptor complex for amino acid-derived hormones and peptide hormones?

A

on the cell surface

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25
What is an example of hormones with antagonistic effects (opposing responses)?
insulin and glucagon
26
What does HYP stand for?
Hypothalamus
27
Where does the HYP secrete hormones into?
the posterior pituitary
28
What does the HYP stimulate to secrete hormones?
the anterior pituitary
29
What does PP stand for?
posterior pituitary
30
What are the two hormones of the PP and what do they do?
ADH (water balance) and oxytocin (uterine contractions)
31
What is an example of a simulating or inhibiting hormone the AP receives from the HYP?
GnRH
32
What does GnRH stand for?
Gonadotropin-Releasing Hormone (GnRH)
33
What is a tropic hormone?
Hormones that stimulate the production and secretion of hormones by other endocrine glands
34
What is a non-tropic hormone?
Hormones that directly stimulate target cells to induce effects
35
What 5 hormones does the AP release?
GH (tropic and non-tropic), TSH, FSH, LH, and ACTH (tropic)
36
What does GH stand for?
Growth hormone
37
What three hormones does the thyroid gland release?
Thyroxine T3 and T4 and calcitonin
38
What does Thyroxine T3 and T4 do?
controls cellular metabolism
39
What does calcitonin do?
lowers Ca+ levels in bloodstream
40
What is Hypothyroidism?
too little thyroxine (metabolic rate decreases)
41
What is hyperthyroidism?
too much thyroxine (metabolic rate increases)
42
What hormone does the parathyroid release?
PTH
43
what does PTH stand for?
Parathyroid Hormone (PTH)
44
What does PTH do?
increases Ca+ levels in the blood (opposes calcitonin)
45
What two hormones are released by the pancreas?
Insulin and glucagon
46
what does insulin do?
lowers blood glucose (promoting glycogen storage)
47
what does glucagon do?
increases blood glucose (promoting glycogen hydrolysis)
48
What controls the adrenal medulla?
the nervous system
49
What two hormones does the adrenal medulla release?
epinephrine and norepinephrine
50
what does epinephrine do?
It plays an important role in the body’s “fight-or-flight” response
51
what does norepinephrine do?
It plays an important role in your body’s “fight-or-flight” response, and is used to increase and maintain blood pressure
52
What controls the adrenal cortex?
ACTH from the AP
53
What three hormones does the adrenal cortex release?
glucocoricoids (affects carbohydrate metabolism), aldosterone (salt balance), androgens (muscle mass)
54
What are the gonads?
ovaries and testes
55
What controls the gonads?
GNRH (from HYP) and FSH and LH (from AP)
56
What category of hormones do the gonads release?
steroid hormones
57
What hormones do the testes release?
androgens (like testosterone)
58
What hormones do the ovaries release?
estrogen and progesterone
59
What does LH stand for?
Luteinizing hormone (LH)
60
What does Luteinizing hormone (LH) do for men?
stimulate interstitial cells to produce testosterone
61
What does LH do for women?
LH induces ovulation and maintains corpus luteum
62
What does FSH stand for?
Follicle-Stimulating Hormone (FSH)
63
What does FSH do for men?
promotes sperm production
64
What does FSH do for women?
stimulates the immature follicle to develop
65
In women what secretes estrogen?
a mature follicle
66
what does progesterone do?
maintain the endometrium in the uterus and inhibits the AP and HYP
67
What does HCG stand for?
Human chorionic gonadotropin
68
what does HCG do as part of implantation?
maintain the corpus luteum so it can continue to secrete progesterone
69
what secretes HCG?
the embryo then placenta