Which one of the following would NOT be observed after administration of phenylephrine? a) Increase in...
Which one of the following would NOT be observed after administration of phenylephrine?
a) Increase in TPR
b) Increase in stroke volume
c) Decrease in heart rate
d) Decrease in AV conduction
e) Reduction in sympathetic nerve stimulation to the heart
Homework Answers
a) Increase in TPR
Phenylepherine is a alpha1-adrenergic receptor agonist that causes vasoconstriction, increases systolic/diastolic pressures and increase or decrease the stroke volume and cardiac output. Baroreflex causes Reflex bradycardia as a side effect.
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Which one of the following would NOT be observed after
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Question 30 Not yet answeredPoints out of 2.50Flag question Question text A decrease in parasympathetic stimulation...
Question 30
Not yet answeredPoints out of 2.50Flag
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Question text
A decrease in parasympathetic stimulation of the SA
NODE
Select one:
a. Increase in HR;decrease in cardiac output; increase
in BP
b. Increase in HR; increase in cardiac output; increase
in BP
c. Decrease in HR; decrease in cardiac output; decrease
in BP
d. Decrease in HR; decrease in cardiac output; increase
in BP
Question 31
Not yet answeredPoints out of 2.50Flag
question
Question text
Sympathetic stimulation of the...
Question 6 Which of the following is NOT a property of a healthy heart? a) The...
Question 6 Which of the following is NOT a property of a healthy heart? a) The contractile cells operate on the ascending limb(le.left side of the length-tension curve b) Stroke volume increases with increasing volume that enters during diastole. c) During exercise, sympathetic stimulation of the heart increases contractility, d) Norepinephrine creates an increase in the twitch duration of contractile cells e) None of the above are unhealthy characteristics.
Please answer all questions. Thank You? 31) Sympathetic nerve stimulation and epinephrine heart activity. A) increase...
Please answer all questions. Thank You?
31) Sympathetic nerve stimulation and epinephrine heart activity. A) increase B) decrease C) have no effect on D) The heart responds to hormones, but not to nerve stimulation. E) The heart responds to nerve stimulation, but not to hormones. 52) Rheumatic Tever is a bacterial disease that can result in degeneration of heart valves. That would cause A) slower heartbeat. B) uncoordinated attraction of ventricles. C) faster heart beat. D) backfire of blood from...
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In each of the following, indicate if the situation on the left would cause an increase (I), decrease (D) or no/not change (NC) to the variable on the right. You should place the appropriate letter(s) in the blank. a. Decrease in blood pressure would ___ secretion of aldosterone. b. Binding of epinephrine to Beta 2 receptors on blood vessels will ___ vessel diameter. c. Binding of norepinephrine to alpha 1 receptors on...
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Please answer ALL questions. 1. Select the correct combination for a sympathetic increase in heart rate A. acetylcholine -- alpha receptors -- increased potassium permeability B. norepinephrine and epinephrine -- beta 2 receptors --increased permeability to sodium, potassium, and calcium C. acetylcholine --muscarinic receptors --increased potassium permability D. norepinephrine and epinephrine -- nicotinic receptors --increased permeability to calcium E. norepinephrine and epinephrine -- beta 1 receptors -- increased permeability to sodium and calcium 2. If there is loss of plasma...
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all 5 please :) 4 3. During the first step of the clotting process, an arteriole...
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4 3. During the first step of the clotting process, an arteriole will platelets bind to collagen fibers using during the second step, O out Select one: a. vasoconstrict; thromboxane b. vasoconstrict; von Willebrand factor O C. vasodilate; fibrinogen x d. vasodilate; thromboxane 8. Which of these lists the components of the conduction system in the heart in the correct order, from slowest to fastest? Select one: a. Purkinje fibers; AV node; SA node b. SA...
Question 30
Not yet answeredPoints out of 2.50Flag
question
Question text
A decrease in parasympathetic stimulation of the SA
NODE
Select one:
a. Increase in HR;decrease in cardiac output; increase
in BP
b. Increase in HR; increase in cardiac output; increase
in BP
c. Decrease in HR; decrease in cardiac output; decrease
in BP
d. Decrease in HR; decrease in cardiac output; increase
in BP
Question 31
Not yet answeredPoints out of 2.50Flag
question
Question text
Sympathetic stimulation of the...
Question 6 Which of the following is NOT a property of a healthy heart? a) The contractile cells operate on the ascending limb(le.left side of the length-tension curve b) Stroke volume increases with increasing volume that enters during diastole. c) During exercise, sympathetic stimulation of the heart increases contractility, d) Norepinephrine creates an increase in the twitch duration of contractile cells e) None of the above are unhealthy characteristics.
Please answer all questions. Thank You?
31) Sympathetic nerve stimulation and epinephrine heart activity. A) increase B) decrease C) have no effect on D) The heart responds to hormones, but not to nerve stimulation. E) The heart responds to nerve stimulation, but not to hormones. 52) Rheumatic Tever is a bacterial disease that can result in degeneration of heart valves. That would cause A) slower heartbeat. B) uncoordinated attraction of ventricles. C) faster heart beat. D) backfire of blood from...
Please answer from k till r asap please!
In each of the following, indicate if the situation on the left would cause an increase (I), decrease (D) or no/not change (NC) to the variable on the right. You should place the appropriate letter(s) in the blank. a. Decrease in blood pressure would ___ secretion of aldosterone. b. Binding of epinephrine to Beta 2 receptors on blood vessels will ___ vessel diameter. c. Binding of norepinephrine to alpha 1 receptors on...
O LIVE 46Physiologically, shock results in: A. Inadequate delivery of Oxygen to body cells. B. Tachycardia. Je. Hypotension. Increasing levels of Hydrogen ions, ✓ All of the above. During Blood Pressure evaluation, if the diastolic 2 (D2) cannot be measured, this means: A. Vasodilation is imminent. B) A Korotkoff sound. Is present. C. Resistance is diminishing. D. All of the above. . E. None of the above. 29 489 A deficiency in ADH wolila Check deficiency in ADH would result...
all 5 please :)
4 3. During the first step of the clotting process, an arteriole will platelets bind to collagen fibers using during the second step, O out Select one: a. vasoconstrict; thromboxane b. vasoconstrict; von Willebrand factor O C. vasodilate; fibrinogen x d. vasodilate; thromboxane 8. Which of these lists the components of the conduction system in the heart in the correct order, from slowest to fastest? Select one: a. Purkinje fibers; AV node; SA node b. SA...
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