Question 1

A patient takes a drug that immediately causes a reflex tachycardia.What is the most likely explanation for this effect on heart rate?

Accepted Answer

A) The drug causes a sudden decline in blood pressure,thereby activating the baroreceptor reflex. 
B) The drug spikes or elevates the blood pressure,thereby activating the baroreceptor reflex. 
C) The drug causes venoconstriction. 
D) The drug causes an increase in SVR (systemic vascular resistance). 
A) The drug causes a sudden decline in blood pressure,thereby activating the baroreceptor reflex. 
B) The drug spikes or elevates the blood pressure,thereby activating the baroreceptor reflex. 
C) The drug causes venoconstriction. 
D) The drug causes an increase in SVR (systemic vascular resistance).

Question 2

Which of the following is most likely to induce carotid sinus syncope?

Accepted Answer

A) Development of hypovolemic (low blood volume) shock,as in hemorrhage 
B) Exertion of pressure over the carotid sinus (tight collar) 
C) Administration of nitroglycerine (a vasodilator drug) 
D) Administration of a diuretic for hypertension 
A) Development of hypovolemic (low blood volume) shock,as in hemorrhage 
B) Exertion of pressure over the carotid sinus (tight collar) 
C) Administration of nitroglycerine (a vasodilator drug) 
D) Administration of a diuretic for hypertension

Question 3

Which statement is not true about baroreceptors?

Accepted Answer

A) Can induce a reflex tachycardia 
B) Located in the carotid sinus and aortic arch 
C) Activated by hypoxemia 
D) Activated by a hemorrhage-induced decline in blood pressure 
A) Can induce a reflex tachycardia 
B) Located in the carotid sinus and aortic arch 
C) Activated by hypoxemia 
D) Activated by a hemorrhage-induced decline in blood pressure

Question 4

Which of the following is true regarding the sympathetic and parasympathetic arms of the baroreceptor reflex? They carry

Accepted Answer

A) sensory information from the baroreceptors to the SA and AV nodes of the heart. 
B) sensory information from the SA and AV nodes to the spinal cord. 
C) motor information from the spinal cord to the heart and blood vessels. 
D) motor information from the heart and blood vessels to the aortic and carotid sinus baroreceptors. 
A) sensory information from the baroreceptors to the SA and AV nodes of the heart. 
B) sensory information from the SA and AV nodes to the spinal cord. 
C) motor information from the spinal cord to the heart and blood vessels. 
D) motor information from the heart and blood vessels to the aortic and carotid sinus baroreceptors.

Question 5

An agent that is described as a vasopressor

Accepted Answer

A) causes peripheral vasodilation. 
B) elevates blood pressure. 
C) decreases systemic vascular resistance. 
D) decreases cardiac output. 
A) causes peripheral vasodilation. 
B) elevates blood pressure. 
C) decreases systemic vascular resistance. 
D) decreases cardiac output.

Question 6

The function of the nozzle on a garden hose most closely resembles the function of the

Accepted Answer

A) heart. 
B) parasympathetic nervous system. 
C) arterioles. 
D) venous valves. 
A) heart. 
B) parasympathetic nervous system. 
C) arterioles. 
D) venous valves.

Question 7

If the left ventricle of the heart fails,blood backs up in the pulmonary capillary,

Accepted Answer

A) decreasing plasma oncotic pressure and drying out the lungs. 
B) blocking the flow of lymph and drying out the lungs. 
C) increasing capillary pressure and forcing fluid into the lungs. 
D) increasing plasma oncotic pressure,causing pulmonary edema. 
A) decreasing plasma oncotic pressure and drying out the lungs. 
B) blocking the flow of lymph and drying out the lungs. 
C) increasing capillary pressure and forcing fluid into the lungs. 
D) increasing plasma oncotic pressure,causing pulmonary edema.

Question 8

Which statement is the best explanation of the following: Sympathetic nerve stimulation increases systemic vascular resistance.

Accepted Answer

A) Sympathetic nerve stimulation causes many of the arterioles in the peripheral circulation to constrict. 
B) Sympathetic nerve stimulation causes peripheral venodilation and a decrease in preload. 
C) Sympathetic nerve stimulation reduces afterload in the systemic circulation. 
D) Sympathetic nerve stimulation causes a vasodepressor effect. 
A) Sympathetic nerve stimulation causes many of the arterioles in the peripheral circulation to constrict. 
B) Sympathetic nerve stimulation causes peripheral venodilation and a decrease in preload. 
C) Sympathetic nerve stimulation reduces afterload in the systemic circulation. 
D) Sympathetic nerve stimulation causes a vasodepressor effect.

Question 9

Which of the following is the most likely consequence of venodilation,or "pooling" of the blood in the venous circulation?

Accepted Answer

A) Increased EDV (end-diastolic volume) 
B) Increased myocardial contraction 
C) Decreased venous return 
D) Increased blood pressure 
A) Increased EDV (end-diastolic volume) 
B) Increased myocardial contraction 
C) Decreased venous return 
D) Increased blood pressure

Question 10

Baroreceptors

Accepted Answer

A) are found in all arterioles and sense plasma levels of CO₂. 
B) affect respiratory rate. 
C) monitor [H+] and therefore regulate blood pH. 
D) are located in the carotid sinus and aortic arch and sense changes in blood pressure. 
A) are found in all arterioles and sense plasma levels of CO₂. 
B) affect respiratory rate. 
C) monitor [H+] and therefore regulate blood pH. 
D) are located in the carotid sinus and aortic arch and sense changes in blood pressure.

A patient takes a drug that immediately causes a reflex tachycardia.What is the most likely explanation for this effect on heart rate?

Which of the following is most likely to induce carotid sinus syncope?

Which statement is not true about baroreceptors?

Which of the following is true regarding the sympathetic and parasympathetic arms of the baroreceptor reflex? They carry

An agent that is described as a vasopressor

The function of the nozzle on a garden hose most closely resembles the function of the

If the left ventricle of the heart fails,blood backs up in the pulmonary capillary,

Which statement is the best explanation of the following: Sympathetic nerve stimulation increases systemic vascular resistance.

Which of the following is the most likely consequence of venodilation,or "pooling" of the blood in the venous circulation?

Baroreceptors

Introduction to the Human Body

Basic Chemistry

Cells

Cell Metabolism

Microbiology Basics

Tissues and Membranes

Integumentary System and Body Temperature

Skeletal System

Muscular System

Nervous System: Nervous Tissue and Brain

Nervous System: Spinal Cord and Peripheral Nerves

Autonomic Nervous System

Sensory System

Endocrine System

Blood

Anatomy of the Heart

Function of the Heart

Anatomy of the Blood Vessels and Special Circulations

Lymphatic System

Immune System

Respiratory System

Digestive System

Urinary System

Water, Electrolyte, and Acidbase Balance

Reproductive Systems

Human Development and Heredity

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Exam 19: Functions of the Blood Vessels

A patient takes a drug that immediately causes a reflex tachycardia.What is the most likely explanation for this effect on heart rate?

Which of the following is most likely to induce carotid sinus syncope?

Which statement is not true about baroreceptors?

Which of the following is true regarding the sympathetic and parasympathetic arms of the baroreceptor reflex? They carry

An agent that is described as a vasopressor

The function of the nozzle on a garden hose most closely resembles the function of the

If the left ventricle of the heart fails,blood backs up in the pulmonary capillary,

Which statement is the best explanation of the following: Sympathetic nerve stimulation increases systemic vascular resistance.

Which of the following is the most likely consequence of venodilation,or "pooling" of the blood in the venous circulation?

Baroreceptors

Introduction to the Human Body

Basic Chemistry

Cells

Cell Metabolism

Microbiology Basics

Tissues and Membranes

Integumentary System and Body Temperature

Skeletal System

Muscular System

Nervous System: Nervous Tissue and Brain

Nervous System: Spinal Cord and Peripheral Nerves

Autonomic Nervous System

Sensory System

Endocrine System

Blood

Anatomy of the Heart

Function of the Heart

Anatomy of the Blood Vessels and Special Circulations

Lymphatic System

Immune System

Respiratory System

Digestive System

Urinary System

Water, Electrolyte, and Acidbase Balance

Reproductive Systems

Human Development and Heredity

Filters