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8 Cards in this Set

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substances that influence blood pressure:
1. epinephrine
2. norepinephrine
3. antidiuretic hormone
4. arterial natriuretic hormone(ANP)
5. nitric oxide
6. nicotine
7. alcohol
epinephrine
1. secreted by the adrenal medulla
2. increase heart rate
3. increase heart muscle contractility
cause vasoconstriction of arteries and vein
4. as part of fight or flight
norepinephrine
1. secreted by the adrenal medulla
2. increase heart rate
3. increase heart muscle contractility
cause vasoconstriction of arteries and vein
4. as part of fight or flight
antidiuretic hormone (ADH)
1. secreted by the hypothalamus
2. increase blood pressure
3. stimulate kidneys to retain H2O
4. increases blood pressure by increasing blood volume
arterial Natriuretic (ANP)
1. secreted by the heart's atria
2. decreases blood pressure
3. causes vasodilation
4. stimulates kidneys to excrete H20
5. decreases blood pressure by decreasing blood volume
Nitric Oxide
1. secreted by endothelial cells
2. causes vasodilation
Nicotine
1. increases blood pressure
2. stimulates sympathetic neurons: -- increase vasoconstriction
3. stimulate adrenal medulla :-- increase secretion of epinephrine and norepinephrine
Alcohol
1. decreases blood pressure
2. inhibits vasomotor center(causes vasodilation)
3. inhibits release of ADH
4. this increases H20 exceretion and decreases blood volume