Question 1

Myogenic autoregulation means that

Accepted Answer

A)  increased blood pressure in a vessel triggers relaxation in that vessel. 
B)  stretched smooth muscle in a blood vessel constricts reflexively. 
C)  blood vessel diameter is adjusted by centers in the brain through monitoring blood pressure in areas throughout the body. 
D)  increased blood pressure in a vessel triggers relaxation in that vessel and blood vessel diameter is adjusted by centers in the brain through monitoring blood pressure in areas throughout the body. 
E)  stretched smooth muscle in a blood vessel constricts reflexively and blood vessel diameter is adjusted by centers in the brain through monitoring blood pressure in areas throughout the body. 
A)  increased blood pressure in a vessel triggers relaxation in that vessel. 
B)  stretched smooth muscle in a blood vessel constricts reflexively. 
C)  blood vessel diameter is adjusted by centers in the brain through monitoring blood pressure in areas throughout the body. 
D)  increased blood pressure in a vessel triggers relaxation in that vessel and blood vessel diameter is adjusted by centers in the brain through monitoring blood pressure in areas throughout the body. 
E)  stretched smooth muscle in a blood vessel constricts reflexively and blood vessel diameter is adjusted by centers in the brain through monitoring blood pressure in areas throughout the body.

Question 2

By binding to the Ca2+ channel proteins,drugs known as calcium channel blockers have two main effects.Name them.Why are some cells unaffected by these drugs?

Accepted Answer

Binding to calcium channels makes them l

Question 3

When blood pressure is normal,the receptors in arterial walls fire action potentials

Accepted Answer

A)  very seldom. 
B)  continuously. 
A)  very seldom. 
B)  continuously.

Question 4

The difference between the systolic and diastolic pressures is called the

Accepted Answer

A)  systemic pressure. 
B)  mean arterial pressure. 
C)  pulse pressure. 
D)  blood pressure. 
E)  circulatory pressure. 
A)  systemic pressure. 
B)  mean arterial pressure. 
C)  pulse pressure. 
D)  blood pressure. 
E)  circulatory pressure.

Question 5

Which of the following is greater?

Accepted Answer

A)  heart rate normally 
B)  heart rate during circulatory shock 
A)  heart rate normally 
B)  heart rate during circulatory shock

Question 6

Angiogenesis is

Accepted Answer

A)  an examination of the arteries and veins. 
B)  having blood drawn into a tube for tests. 
C)  the growth of new blood vessels. 
D)  surgical restructuring of the coronary arteries. 
E)  being able to detect a pulse in arteries. 
A)  an examination of the arteries and veins. 
B)  having blood drawn into a tube for tests. 
C)  the growth of new blood vessels. 
D)  surgical restructuring of the coronary arteries. 
E)  being able to detect a pulse in arteries.

Question 7

All of the following would cause an increase in blood pressure EXCEPT

Accepted Answer

A)  an increase in arterial resistance. 
B)  a decrease in arterial diameter. 
C)  a decrease in cardiac output. 
D)  sympathetic stimulation. 
A)  an increase in arterial resistance. 
B)  a decrease in arterial diameter. 
C)  a decrease in cardiac output. 
D)  sympathetic stimulation.

Question 8

Fenestrated capillaries are present in

Accepted Answer

A)  skeletal muscles. 
B)  cardiac muscle. 
C)  the liver. 
D)  the spleen. 
E)  skin. 
A)  skeletal muscles. 
B)  cardiac muscle. 
C)  the liver. 
D)  the spleen. 
E)  skin.

Question 9

Brian,53,finally visited his doctor,after 6 months of being winded after climbing the two flights of stairs to his apartment.He kept blaming himself for being "out of shape," and thought he would be OK after his spring yard work started,but he wasn't.The doctor wasn't surprised when Brian's blood pressure was 160/110 mm Hg.The doctor prescribed some beta blockers and more tests,including an ECG and blood tests.Why did the doctor want this additional information? What are some items he would check in the blood tests,and why?

Accepted Answer

Abnormalities on the ECG would reveal ev

Question 10

The values obtained when measuring blood pressure,such as 120/80,

Accepted Answer

A)  exactly match the pressures inside the ventricle during systole and diastole. 
B)  reflect the pressure in the major arteries during ventricular systole and diastole. 
C)  are the same on both the pulmonary and systemic circuits. 
D)  exactly match the pressures inside the ventricle during systole and diastole and reflect the pressure in the major arteries during ventricular systole and diastole. 
E)  All of the answers are correct. 
A)  exactly match the pressures inside the ventricle during systole and diastole. 
B)  reflect the pressure in the major arteries during ventricular systole and diastole. 
C)  are the same on both the pulmonary and systemic circuits. 
D)  exactly match the pressures inside the ventricle during systole and diastole and reflect the pressure in the major arteries during ventricular systole and diastole. 
E)  All of the answers are correct.

Question 11

Increased blood volume ________ blood pressure.

Accepted Answer

A)  increases 
B)  decreases 
C)  has no effect on 
A)  increases 
B)  decreases 
C)  has no effect on

Question 12

Mean arterial pressure is (indirectly/directly)proportional to ________ and (indirectly/directly)proportional to ________.

Accepted Answer

directly,cardiac out

Question 13

Blood pressure and flow to the brain are monitored by receptors located in the wall of the

Accepted Answer

A)  carotid artery. 
B)  aorta. 
C)  venae cavae. 
D)  cerebral arteries. 
E)  cephalic arteries. 
A)  carotid artery. 
B)  aorta. 
C)  venae cavae. 
D)  cerebral arteries. 
E)  cephalic arteries.

Question 14

The accumulation of fluid in the interstitial space is called ________.

Accepted Answer

The answer of The accumulation of fluid in the interstitial...

Question 15

Blood pressure and cardiac output can be altered according to

Accepted Answer

A)  body temperature. 
B)  emotional responses. 
C)  blood oxygen levels. 
D)  body temperature and emotional responses. 
E)  body temperature, emotional responses, and blood oxygen levels. 
A)  body temperature. 
B)  emotional responses. 
C)  blood oxygen levels. 
D)  body temperature and emotional responses. 
E)  body temperature, emotional responses, and blood oxygen levels.

Question 16

Why is there a loss of blood volume when a patient is confined to bed for two or three days? What symptoms commonly follow this confinement?

Accepted Answer

Inactivity causes edema,because of the l

Question 17

Siegfried experiences a hemorrhage in an artery,and now blood is leaking out of the resulting hole.His blood pressure decreases.Draw a flow chart illustrating the cardiovascular reflex responses that follow to compensate for the drop in blood pressure.

Accepted Answer

As blood exits the vasculature,there is

Question 18

Increased levels of carbon dioxide in the blood will result in

Accepted Answer

A)  decreased heart rate. 
B)  decreased cardiac output. 
C)  decreased blood flow to the lungs. 
D)  decreased parasympathetic stimulation of the heart. 
E)  All of the answers are correct. 
A)  decreased heart rate. 
B)  decreased cardiac output. 
C)  decreased blood flow to the lungs. 
D)  decreased parasympathetic stimulation of the heart. 
E)  All of the answers are correct.

Question 19

Which of the following is/are (a)possible treatment(s)for hypertension?

Accepted Answer

A)  calcium channel blockers 
B)  ACE inhibitors 
C)  ANP blockers 
D)  chloride leak channel blockers 
E)  calcium channel blockers and ACE inhibitors 
A)  calcium channel blockers 
B)  ACE inhibitors 
C)  ANP blockers 
D)  chloride leak channel blockers 
E)  calcium channel blockers and ACE inhibitors

Question 20

Using the appropriate formula,what effect does changing the following vessel diameters have on blood flow?
A.diameter = 8 mm,decreasing to 6 mm
B.diameter = 8 mm,increasing to 12 mm
C.diameter = 10 mm,decreasing to 5 mm
D.diameter = 10 mm,increasing to 20 mm

Accepted Answer

Flow @#IMG-DLM& ΔP/R and R @#IMG-DLM& 1/r⁴. A.Radius changes

Exam 15: Blood Flow and the Control of Blood Pressure

Myogenic autoregulation means that

By binding to the Ca2+ channel proteins,drugs known as calcium channel blockers have two main effects.Name them.Why are some cells unaffected by these drugs?

When blood pressure is normal,the receptors in arterial walls fire action potentials

The difference between the systolic and diastolic pressures is called the

Which of the following is greater?

Angiogenesis is

All of the following would cause an increase in blood pressure EXCEPT

Fenestrated capillaries are present in

The values obtained when measuring blood pressure,such as 120/80,

Increased blood volume ________ blood pressure.

Mean arterial pressure is (indirectly/directly)proportional to ________ and (indirectly/directly)proportional to ________.

Blood pressure and flow to the brain are monitored by receptors located in the wall of the

The accumulation of fluid in the interstitial space is called ________.

Blood pressure and cardiac output can be altered according to

Why is there a loss of blood volume when a patient is confined to bed for two or three days? What symptoms commonly follow this confinement?

Siegfried experiences a hemorrhage in an artery,and now blood is leaking out of the resulting hole.His blood pressure decreases.Draw a flow chart illustrating the cardiovascular reflex responses that follow to compensate for the drop in blood pressure.

Increased levels of carbon dioxide in the blood will result in

Which of the following is/are (a)possible treatment(s)for hypertension?

Using the appropriate formula,what effect does changing the following vessel diameters have on blood flow? A.diameter = 8 mm,decreasing to 6 mm B.diameter = 8 mm,increasing to 12 mm C.diameter = 10 mm,decreasing to 5 mm D.diameter = 10 mm,increasing to 20 mm

Introduction to Physiology

Molecular Interactions

Compartmentation: Cells and Tissues

Energy and Cellular Metabolism

Membrane Dynamics

Communication, Integration, and Homeostasis

Introduction to the Endocrine System

Neurons: Cellular and Network Properties

The Central Nervous System

Sensory Physiology

Efferent Division: Autonomic and Somatic Motor Control

Muscles

Integrative Physiology I: Control of Body Movement

Cardiovascular Physiology

Blood

Mechanics of Breathing

Gas Exchange and Transport

The Kidneys

Integrative Physiology II: Fluid and Electrolyte Balance

The Digestive System

Metabolism and Energy Balance

Endocrine Control of Growth and Metabolism

The Immune System

Integrative Physiology III: Exercise

Reproduction and Development

Filters

By binding to the Ca²⁺ channel proteins,drugs known as calcium channel blockers have two main effects.Name them.Why are some cells unaffected by these drugs?

Mean arterial pressure is (indirectly/directly)proportional to and (indirectly/directly)proportional to .