Question 1

The condition in which the pericardial sac becomes distended with excess fluid to the point that it impinges upon cardiac filling is known as ____________________.

Accepted Answer

The answer of The condition in which the pericardial sac...

Question 2

What is the primary function of the pericardial sac

Accepted Answer

A) to prevent excessive expansion of the heart as it fills with blood 
B) to secrete a fluid that reduces friction while the heart beats 
C) to serve as a reservoir for blood to be used during strenuous exercise 
D) to provide oxygen and nutrients to the heart muscle 
A) to prevent excessive expansion of the heart as it fills with blood 
B) to secrete a fluid that reduces friction while the heart beats 
C) to serve as a reservoir for blood to be used during strenuous exercise 
D) to provide oxygen and nutrients to the heart muscle

Question 3

Match the pressure relationships, labelled a. through e., with the times in question. (Options may be used more than once or not at all.)
-during isovolumetric ventricular contraction

Accepted Answer

A) aortic pressure > ventricular pressure > atrial pressure 
B) ventricular pressure > aortic pressure > atrial pressure 
C) aortic pressure > atrial pressure > ventricular pressure 
D) ventricular pressure > atrial pressure > aortic pressure 
E) atrial pressure > ventricular pressure > aortic pressure 
A) aortic pressure > ventricular pressure > atrial pressure 
B) ventricular pressure > aortic pressure > atrial pressure 
C) aortic pressure > atrial pressure > ventricular pressure 
D) ventricular pressure > atrial pressure > aortic pressure 
E) atrial pressure > ventricular pressure > aortic pressure

Question 4

What percentage of ventricular filling is normally accomplished before atrial contraction begins

Accepted Answer

A) 0 percent 
B) 20 percent 
C) 50 percent 
D) 80 percent 
A) 0 percent 
B) 20 percent 
C) 50 percent 
D) 80 percent

Question 5

The ____________________ ensures that atrial excitation and contraction are complete before ventricular excitation and contraction commence.

Accepted Answer

The answer of The ____________________ ensures that atrial excitation and...

Question 6

The SA node is the pacemaker of the heart.

Accepted Answer

A) True 
 B)False

Question 7

Match the cardiovascular features, labelled a. through d., with their correct characteristic.
-freely floating clot

Accepted Answer

A) angina pectoris 
B) embolus 
C) atherosclerosis 
D) thrombus 
A) angina pectoris 
B) embolus 
C) atherosclerosis 
D) thrombus

Question 8

Which of these statements describes the AV node

Accepted Answer

A) It is the normal pacemaker of the heart. 
B) It is the only electrical connection between the atria and the ventricles. 
C) It rapidly conducts the impulse from the atria to the ventricles so that they contract simultaneously. 
D) It is not innervated by the vagus. 
A) It is the normal pacemaker of the heart. 
B) It is the only electrical connection between the atria and the ventricles. 
C) It rapidly conducts the impulse from the atria to the ventricles so that they contract simultaneously. 
D) It is not innervated by the vagus.

Question 9

Most blood flow through the coronary vessels occurs during ventricular systole when the heart is driving blood forward.

Accepted Answer

A) True 
 B)False

Question 10

The ____________________ is the volume of blood pumped by each ventricle/beat.

Accepted Answer

The answer of The ____________________ is the volume of blood...

Question 11

Match the terms, labelled a. through f., with the descriptions. (Options may be used more than once or not at all.)
-Heart rate can be increased by increasing _____.

Accepted Answer

A) stroke volume 
B) end-diastolic volume 
C) cardiac output 
D) heart rate 
E) end-systolic volume
F)sympathetic activity 
A) stroke volume 
B) end-diastolic volume 
C) cardiac output 
D) heart rate 
E) end-systolic volume
F)sympathetic activity

Question 12

Match the terms, labelled a. through f., with the descriptions. (Options may be used more than once or not at all.)
-The number of times the heart contracts each minute is the_____.

Accepted Answer

A) stroke volume 
B) end-diastolic volume 
C) cardiac output 
D) heart rate 
E) end-systolic volume
F)sympathetic activity 
A) stroke volume 
B) end-diastolic volume 
C) cardiac output 
D) heart rate 
E) end-systolic volume
F)sympathetic activity

Question 13

Ninety-nine percent of the cardiac fibres are specialized for ____________________ whereas the remainder are specialized for ____________________.

Accepted Answer

contraction; conduct

Question 14

Which vessel carries blood with a comparatively high concentration of oxygen

Accepted Answer

A) superior vena cava 
B) inferior vena cava 
C) pulmonary artery 
D) pulmonary vein 
A) superior vena cava 
B) inferior vena cava 
C) pulmonary artery 
D) pulmonary vein

Question 15

Match the factor involved in the initiation and spread of cardiac excitation, labelled a. through d. with the description. (Options may be used more than once or not at all.)
-has the fastest rate of pacemaker activity

Accepted Answer

A) SA node 
B) AV node 
C) bundle of His and Purkinje system 
D) gap junction 
A) SA node 
B) AV node 
C) bundle of His and Purkinje system 
D) gap junction

Question 16

Match the pressure relationships, labelled a. through e., with the times in question. (Options may be used more than once or not at all.)
-when the atrioventricular valve closes

Accepted Answer

A) aortic pressure > ventricular pressure > atrial pressure 
B) ventricular pressure > aortic pressure > atrial pressure 
C) aortic pressure > atrial pressure > ventricular pressure 
D) ventricular pressure > atrial pressure > aortic pressure 
E) atrial pressure > ventricular pressure > aortic pressure 
A) aortic pressure > ventricular pressure > atrial pressure 
B) ventricular pressure > aortic pressure > atrial pressure 
C) aortic pressure > atrial pressure > ventricular pressure 
D) ventricular pressure > atrial pressure > aortic pressure 
E) atrial pressure > ventricular pressure > aortic pressure

Question 17

Which of the following occurs when an individual is sympathetically stimulated

Accepted Answer

A) The SA node depolarizes more rapidly. 
B) More ATP results in more sarcomere cross-bridge attachments. 
C) Ventricles contract harder than atria. 
D) The SA node repolarizes more slowly. 
A) The SA node depolarizes more rapidly. 
B) More ATP results in more sarcomere cross-bridge attachments. 
C) Ventricles contract harder than atria. 
D) The SA node repolarizes more slowly.

Question 18

Match the anatomical structures, labelled a. through e., with the heart characteristics. (Options may be used more than once or not at all.)
-electrically connects the atria to the ventricles

Accepted Answer

A) tricuspid valve 
B) myocardium 
C) aortic semilunar valve 
D) AV node 
E) sinoatrial node 
A) tricuspid valve 
B) myocardium 
C) aortic semilunar valve 
D) AV node 
E) sinoatrial node

Question 19

Match the term, labelled 
Match the term, labelled a. through g., with their correct characteristic.
-area of low electrical resistance that allows an action potential to spread from one cardiac cell to surrounding cells

Accepted Answer

A) gap junction 
B) HDL 
C) functional syncytium 
D) heart valve 
E) pericardial sac
F)LDL
G)adenosine 
A) gap junction 
B) HDL 
C) functional syncytium 
D) heart valve 
E) pericardial sac
F)LDL
G)adenosine

Question 20

Match the factor involved in the initiation and spread of cardiac excitation, labelled a. through d. with the description. (Options may be used more than once or not at all.)
-the only point of electrical contact between the atria and ventricles

Accepted Answer

A) SA node 
B) AV node 
C) bundle of His and Purkinje system 
D) gap junction 
A) SA node 
B) AV node 
C) bundle of His and Purkinje system 
D) gap junction

The condition in which the pericardial sac becomes distended with excess fluid to the point that it impinges upon cardiac filling is known as ____________________.

What is the primary function of the pericardial sac

Match the pressure relationships, labelled a. through e., with the times in question. (Options may be used more than once or not at all.) -during isovolumetric ventricular contraction

What percentage of ventricular filling is normally accomplished before atrial contraction begins

The ____________________ ensures that atrial excitation and contraction are complete before ventricular excitation and contraction commence.

The SA node is the pacemaker of the heart.

Match the cardiovascular features, labelled a. through d., with their correct characteristic. -freely floating clot

Which of these statements describes the AV node

Most blood flow through the coronary vessels occurs during ventricular systole when the heart is driving blood forward.

The ____________________ is the volume of blood pumped by each ventricle/beat.

Match the terms, labelled a. through f., with the descriptions. (Options may be used more than once or not at all.) -Heart rate can be increased by increasing _____.

Match the terms, labelled a. through f., with the descriptions. (Options may be used more than once or not at all.) -The number of times the heart contracts each minute is the_____.

Ninety-nine percent of the cardiac fibres are specialized for whereas the remainder are specialized for .

Which vessel carries blood with a comparatively high concentration of oxygen

Match the factor involved in the initiation and spread of cardiac excitation, labelled a. through d. with the description. (Options may be used more than once or not at all.) -has the fastest rate of pacemaker activity

Match the pressure relationships, labelled a. through e., with the times in question. (Options may be used more than once or not at all.) -when the atrioventricular valve closes

Which of the following occurs when an individual is sympathetically stimulated

Match the anatomical structures, labelled a. through e., with the heart characteristics. (Options may be used more than once or not at all.) -electrically connects the atria to the ventricles

Match the term, labelled Match the term, labelled a. through g., with their correct characteristic. -area of low electrical resistance that allows an action potential to spread from one cardiac cell to surrounding cells

Match the factor involved in the initiation and spread of cardiac excitation, labelled a. through d. with the description. (Options may be used more than once or not at all.) -the only point of electrical contact between the atria and ventricles

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System: Sensory, Autonomic, Somatic

Principles of Endocrinology: The Central Endocrine Glands

The Endocrine Glands

Muscle Physiology

Vascular Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

The Reproductive System

Filters

Exam 8: Cardiac Physiology

The condition in which the pericardial sac becomes distended with excess fluid to the point that it impinges upon cardiac filling is known as ____________________.

What is the primary function of the pericardial sac

Match the pressure relationships, labelled a. through e., with the times in question. (Options may be used more than once or not at all.) -during isovolumetric ventricular contraction

What percentage of ventricular filling is normally accomplished before atrial contraction begins

The ____________________ ensures that atrial excitation and contraction are complete before ventricular excitation and contraction commence.

The SA node is the pacemaker of the heart.

Match the cardiovascular features, labelled a. through d., with their correct characteristic. -freely floating clot

Which of these statements describes the AV node

Most blood flow through the coronary vessels occurs during ventricular systole when the heart is driving blood forward.

The ____________________ is the volume of blood pumped by each ventricle/beat.

Match the terms, labelled a. through f., with the descriptions. (Options may be used more than once or not at all.) -Heart rate can be increased by increasing _____.

Match the terms, labelled a. through f., with the descriptions. (Options may be used more than once or not at all.) -The number of times the heart contracts each minute is the_____.

Ninety-nine percent of the cardiac fibres are specialized for ____________________ whereas the remainder are specialized for ____________________.

Which vessel carries blood with a comparatively high concentration of oxygen

Match the factor involved in the initiation and spread of cardiac excitation, labelled a. through d. with the description. (Options may be used more than once or not at all.) -has the fastest rate of pacemaker activity

Match the pressure relationships, labelled a. through e., with the times in question. (Options may be used more than once or not at all.) -when the atrioventricular valve closes

Which of the following occurs when an individual is sympathetically stimulated

Match the anatomical structures, labelled a. through e., with the heart characteristics. (Options may be used more than once or not at all.) -electrically connects the atria to the ventricles

Match the term, labelled Match the term, labelled a. through g., with their correct characteristic. -area of low electrical resistance that allows an action potential to spread from one cardiac cell to surrounding cells

Match the factor involved in the initiation and spread of cardiac excitation, labelled a. through d. with the description. (Options may be used more than once or not at all.) -the only point of electrical contact between the atria and ventricles

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System: Sensory, Autonomic, Somatic

Principles of Endocrinology: The Central Endocrine Glands

The Endocrine Glands

Muscle Physiology

Vascular Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

The Reproductive System

Filters

Ninety-nine percent of the cardiac fibres are specialized for whereas the remainder are specialized for .