Vasoactive Peptides Flashcards

1
Q

transmitters in the autonomic and central nervous systems

A

Vasoactive peptides

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2
Q

angiotensin II, VD or VC?

A

Vasoconstrictor

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3
Q

vasopressin, VD or VC

A

Vasoconstrictor

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4
Q

endothelins VD, or VC?

A

Vasoconstrictor

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5
Q

neuropeptide Y VD, or VC

A

Vasoconstrictor

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6
Q

urotensin VD or VC

A

Vasoconstrictor

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7
Q

(bradykinin and related kinins VD or VC

A

Vasodilator

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8
Q

natriuretic peptides,

A

Vasodilator

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9
Q

vasoactive intestinal peptide

A

Vasodilator

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10
Q

substance P

A

Vasodilator

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11
Q

neurotensin

A

Vasodilator

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12
Q

calcitonin
gene-related peptide

A

Vasodilator

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13
Q

adrenomedullin

A

Vasodilator

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14
Q

Inactive form of angiotensin 1

A

angiotensinogen

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15
Q

Modulators of renin release aside from synthesis of renin

A
  1. Macula densa
  2. Renal baroreceptor
  3. Sympathetic NS
  4. Angiotensin
  5. Intracellular signaling pathways
  6. Pharmacologic alteration of renin release
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16
Q

A specialized region of distal convoluted tubule

A

Macula Densa

17
Q

where renin is released/regulated

A

Macula densa

18
Q

Relationship between NACL deliver/concentration and renin release

A

Inversely proportional

19
Q

Prostaglandin E2 and Nitric Oxide

A

Stimulate renin release

20
Q

Adenosine

A

Renin release inhibitor

21
Q

If NACL is low, filtrate flow or urine output is?

A

reduces; low

22
Q

Renal vascular baroreceptor relationship with renal artery pressure and renin release

A

Inverse relationship

24
Q

Low BP and renin release relationship

25
Renin, a vasodilator or vasoconstrictor?
Vasoconstrictor
26
Enzyme which converts Angiotensin I to Angiotensin II
Converting enzyme
27
Angiotensin II, vasodilator or vasoconstrictor?
POTENT VASOCONSTRICTOR
28
ANG II action on renin release
Inhibit
29
2nd messengers/ intracellular messengers
cAMP, cGMP, and free cytosolic Calcium (Ca2+) concentration
30
cAMP and renin relationship
directly proportional
31
adenyly cyclase and renin relationship
directly proportional
32
Drugs that alter renin release
1. Vasodilators 2. B-Adrenoceptor agonists 3. A-adrenoceptor antagonists 4. Phosphodiesterase inhibitors 5. most diuretics 6. anesthetics
33
most important substrate of ACE
ANG I
34
Ace Inhibitors
captopril enalapril lisinopril
35
Bradykinin MOA
activates cough reflex
36
ANG II mechanisms in raising blood pressure (4)
1. Vasoconstriction 2. Aldosterone release 3. ADH Release 4. cell growth
37
Drugs that interfere with renin release
Propanolol Ace inhibitors
38
ANG receptor blockers
Losartan Olmesartan Valsartan Azilsartan Condesartan Telmisartan Irbesartan
39