For these questions determine how each of the conditions described will affect b
ID: 3516131 • Letter: F
Question
For these questions determine how each of the conditions described will affect blood pressure. focus ONLY on how that condition will affect blood pressure in the short-term, NOT in the long-term. Use the following answer choices:
a. Increase b. Decrease c. No effect
1. increased sympathetic singnaling on the heart
2. increased venous return
3. a decrease in left ventricular chamber volume.
4. An increase in vasodilation in the majority of your blood vessels
5. Increased acetylcholine singaling on the heart.
6. Increased activity of respiratory and muscle pumps
Explanation / Answer
1)increased sympathetic singnaling on the heart increases blood pressure in the short term ( increase in sympathetic activity increases vasoconstriction rising blood pressure). 2)increased venous return no effect on the blood pressure in the short term because venous return=cardiac output. 3) a decrease in left ventricular chamber volume leads to decrease in blood pressure inshort time 4)increased in vasodilation in the majority of your blood vessels results in decrease in blood pressure in short time, because when vessels dilates the blood flow is increased due to a decrease in vascular resistances therefore dilation of arteries and arterioles leads to an immediate decrease in arterial blood pressure. 5. increased acetylcholine singaling on the heart decreases in blood pressure(causes vasodilation and lowering blood pressure by an indirec action) 6)increased activity of respiratory and muscle punp no effect on blood pressure because the respiratory activity influences venous return to the heart and skeletal muscle pump also enhances the venous return so venous return= cardian output.