Question 1

The purpose of having valves in the cardiovascular system is to

Accepted Answer

A)  provide sounds so that heart health can be monitored. 
B)  ensure that blood flows in one direction. 
C)  prevent blood from flowing too quickly. 
D)  regulate blood pressure. 
E)  provide the force for circulation. 
A)  provide sounds so that heart health can be monitored. 
B)  ensure that blood flows in one direction. 
C)  prevent blood from flowing too quickly. 
D)  regulate blood pressure. 
E)  provide the force for circulation.

Question 2

How many liters of blood are distributed between the pulmonary and systemic circuits in a "typical" person? Assume 20% of the blood is in the lungs at any moment.If the cardiac output is 5 L/min,how long will it take a drop of blood to flow from the right ventricle to the left ventricle?

Accepted Answer

There are about 5 liters of bl

Question 3

Which organ is NOT known to include a special portal system for blood?

Accepted Answer

A)  heart 
B)  kidney 
C)  liver 
D)  brain 
E)  All of these organs have portal systems. 
A)  heart 
B)  kidney 
C)  liver 
D)  brain 
E)  All of these organs have portal systems.

Question 4

In the condition known as complete heart block,what happens?

Accepted Answer

A)  Coronary arteries are blocked by plaques, preventing blood and oxygen from reaching the myocardial contractile cells. 
B)  Electrical signals from the SA node never reach the ventricles, so the contraction of the atria is not coordinated with the contraction of the ventricles. 
C)  The fibrous skeleton of the heart breaks down, interfering with the passage of blood from the atria to the ventricles. 
D)  The mitral valve leaflets calcify and close, preventing blood from being pumped efficiently by the left side of the heart. 
E)  Blood flow through the foramen ovale is blocked. 
A)  Coronary arteries are blocked by plaques, preventing blood and oxygen from reaching the myocardial contractile cells. 
B)  Electrical signals from the SA node never reach the ventricles, so the contraction of the atria is not coordinated with the contraction of the ventricles. 
C)  The fibrous skeleton of the heart breaks down, interfering with the passage of blood from the atria to the ventricles. 
D)  The mitral valve leaflets calcify and close, preventing blood from being pumped efficiently by the left side of the heart. 
E)  Blood flow through the foramen ovale is blocked.

Question 5

The QRS complex of an ECG corresponds to

Accepted Answer

A)  the depolarization of the atria. 
B)  the progressive wave of ventricular depolarization. 
C)  the repolarization of the ventricles. 
D)  atrial repolarization. 
E)  None of the answers are correct. 
A)  the depolarization of the atria. 
B)  the progressive wave of ventricular depolarization. 
C)  the repolarization of the ventricles. 
D)  atrial repolarization. 
E)  None of the answers are correct.

Question 6

Sympathetic stimulation to the pacemaker cells ________ heart rate by ________ ion flow through ________ and ________ channels.

Accepted Answer

increases,

Question 7

Match the change with the cardiovascular event described.
-The blood pressure in a vessel is 20 units at point A and 10 units at point B.One minute later,the pressure is 15 units at point A and five units at point B.Flow between those points is ________.

Accepted Answer

A) increased 
B) decreased 
C) unchanged 
D) stopped 
A) increased 
B) decreased 
C) unchanged 
D) stopped

Question 8

A resting heart rate above 100 beats per minute is identified as ________.

Accepted Answer

The answer of A resting heart rate above 100 beats...

Question 9

The primary function of the cardiovascular system is ________.

Accepted Answer

to transport materia

Question 10

Amy is a premed student with a summer job as an animal research technician.One of her duties is to withdraw blood by syringe from the anterior vena cava of pigs,to be analyzed for various hormones.During her training she noticed that most blood samples were very dark in color,but occasionally a sample was bright red.Propose an explanation.

Accepted Answer

Amy misdirected her needle to

Question 11

Match the change with the cardiovascular event described.
-During fasting,some capillary beds in the digestive tract are closed and therefore have no blood flow.Others are open to meet the minimal need of the tract for blood flow.During eating and as long as food is present in the tract,all capillary beds open to flow.What happens to total cross-sectional area of vessels in the digestive tract?

Accepted Answer

A) increased 
B) decreased 
C) unchanged 
D) stopped 
A) increased 
B) decreased 
C) unchanged 
D) stopped

Question 12

The heart is enclosed in the ________.

Accepted Answer

pericardia

Question 13

The sac around the heart is the

Accepted Answer

A)  peritoneum. 
B)  pleural sac. 
C)  pericardium. 
D)  myocardium. 
E)  epicardium. 
A)  peritoneum. 
B)  pleural sac. 
C)  pericardium. 
D)  myocardium. 
E)  epicardium.

Question 14

Match the following terms to the correct answer:
-has three cuplike leaflets and has the aorta on one side

Accepted Answer

A) tricuspid valve 
B) bicuspid valve 
C) aortic valve 
D) pulmonary valve 
A) tricuspid valve 
B) bicuspid valve 
C) aortic valve 
D) pulmonary valve

Question 15

The term used to describe the amount of blood in the ventricle available to be pumped out of the heart during the next contraction is

Accepted Answer

A)  cardiac output (CO). 
B)  heart rate (HR). 
C)  end-diastolic volume (EDV). 
D)  stroke volume (SV). 
E)  end-systolic volume (ESV). 
A)  cardiac output (CO). 
B)  heart rate (HR). 
C)  end-diastolic volume (EDV). 
D)  stroke volume (SV). 
E)  end-systolic volume (ESV).

Question 16

The cells responsible for establishing the rate of a cardiac contraction are the ________.

Accepted Answer

The answer of The cells responsible for establishing the rate...

Question 17

A tracing of the electrical activity of the heart,monitored by electrodes placed on the skin,is called a(n)________.

Accepted Answer

The answer of A tracing of the electrical activity of...

Question 18

The opening between each atrium and its ventricle is guarded by the ________,which connects the ventricular side to collagenous tendons,called ________.________ muscles provide stability for these tendons.

Accepted Answer

atrioventricular val

Question 19

The resting membrane potential is ________ for skeletal muscle and ________ for contractile myocardium.It is ________ for autorhythmic myocardium.

Accepted Answer

-70 mV,- 90 mV; an u

Question 20

Match the following terms to the correct answer:
-a semilunar valve that has the right ventricle on one side

Accepted Answer

A) tricuspid valve 
B) bicuspid valve 
C) aortic valve 
D) pulmonary valve 
A) tricuspid valve 
B) bicuspid valve 
C) aortic valve 
D) pulmonary valve

Exam 14: Cardiovascular Physiology

The purpose of having valves in the cardiovascular system is to

How many liters of blood are distributed between the pulmonary and systemic circuits in a "typical" person? Assume 20% of the blood is in the lungs at any moment.If the cardiac output is 5 L/min,how long will it take a drop of blood to flow from the right ventricle to the left ventricle?

Which organ is NOT known to include a special portal system for blood?

In the condition known as complete heart block,what happens?

The QRS complex of an ECG corresponds to

Sympathetic stimulation to the pacemaker cells ________ heart rate by ________ ion flow through ________ and ________ channels.

Match the change with the cardiovascular event described. -The blood pressure in a vessel is 20 units at point A and 10 units at point B.One minute later,the pressure is 15 units at point A and five units at point B.Flow between those points is ________.

A resting heart rate above 100 beats per minute is identified as ________.

The primary function of the cardiovascular system is ________.

The heart is enclosed in the ________.

The sac around the heart is the

Match the following terms to the correct answer: -has three cuplike leaflets and has the aorta on one side

The term used to describe the amount of blood in the ventricle available to be pumped out of the heart during the next contraction is

The cells responsible for establishing the rate of a cardiac contraction are the ________.

A tracing of the electrical activity of the heart,monitored by electrodes placed on the skin,is called a(n)________.

The opening between each atrium and its ventricle is guarded by the ________,which connects the ventricular side to collagenous tendons,called ________.________ muscles provide stability for these tendons.

The resting membrane potential is ________ for skeletal muscle and ________ for contractile myocardium.It is ________ for autorhythmic myocardium.

Match the following terms to the correct answer: -a semilunar valve that has the right ventricle on one side

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

Blood Flow and the Control of Blood Pressure

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

Sympathetic stimulation to the pacemaker cells heart rate by ion flow through and channels.

The opening between each atrium and its ventricle is guarded by the ,which connects the ventricular side to collagenous tendons,called . muscles provide stability for these tendons.

The resting membrane potential is for skeletal muscle and for contractile myocardium.It is for autorhythmic myocardium.