Question 1

The semilunar valves close to prevent the backflow of blood into the ventricles.

Accepted Answer

A) True 
 B)False

Question 2

Match the cardiovascular feature with the correct characteristic by using the answer code:
-consists of abnormal smooth muscle cells,cholesterol deposits,scar tissue,and possible calcium deposits plaque

Accepted Answer

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

Question 3

An increase in the length of the cardiac muscle fibres prior to contraction ____________________ the stroke volume.

Accepted Answer

The answer of An increase in the length of the...

Question 4

Indicate which valve abnormality is being described by using the answer code (options may be used more than once or not at all):
-valve does not open completely

Accepted Answer

A) valvular stenosis 
B) valvular insufficiency 
A) valvular stenosis 
B) valvular insufficiency

Question 5

Indicate which ion is involved in each event being described by using the answer code (options may be used more than once or not at all):
-Changes in cytosolic _____ concentration bring about changes in the strength of cardiac contraction.

Accepted Answer

A) K+ 
B) Na+ 
C) Ca2+ 
A) K+ 
B) Na+ 
C) Ca2+

Question 6

What is the membrane potential of cardiac muscle cells at rest?

Accepted Answer

A)  -110 mV 
B)  -90 mV 
C)  -60 mV 
D)  -50 mV 
A)  -110 mV 
B)  -90 mV 
C)  -60 mV 
D)  -50 mV

Question 7

With 2:1 rhythm,the atrial rate is very rapid and the ventricular rate is normal or above normal,whereas with 2:1 block,the atrial rate is normal but the ventricular rate is below normal

Accepted Answer

A) True 
 B)False

Question 8

What does the term systole mean?

Accepted Answer

A)  closure 
B)  conduction 
C)  contraction 
D)  opening 
A)  closure 
B)  conduction 
C)  contraction 
D)  opening

Question 9

Match heart characteristic with correct anatomical structure by using the answer code (options may be used more than once or not at all):
-the ventricles' left is much thicker

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 10

Not all forms of LDL are equally harmful to the heart.

Accepted Answer

A) True 
 B)False

Question 11

When ECF K⁺ levels fall below normal,the heart becomes weak,flaccid,and dilated.

Accepted Answer

A) True 
 B)False

Question 12

Complete the following statements by using the answer code (options may be used more than once or not at all):
-Stroke volume can be increased by increasing end-diastolic volume and _____.

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

On a normal ECG,a wave for repolarization of the atria is not recorded.Why?

Accepted Answer

A)  The leads are not placed in a position to pick it up. 
B)  No repolarization of the atria occurs normally. 
C)  It occurs simultaneously with ventricular depolarization and is masked by the QRS complex. 
D)  It does not travel through body fluids. 
A)  The leads are not placed in a position to pick it up. 
B)  No repolarization of the atria occurs normally. 
C)  It occurs simultaneously with ventricular depolarization and is masked by the QRS complex. 
D)  It does not travel through body fluids.

The semilunar valves close to prevent the backflow of blood into the ventricles.

Match the cardiovascular feature with the correct characteristic by using the answer code: -consists of abnormal smooth muscle cells,cholesterol deposits,scar tissue,and possible calcium deposits plaque

An increase in the length of the cardiac muscle fibres prior to contraction ____________________ the stroke volume.

Indicate which valve abnormality is being described by using the answer code (options may be used more than once or not at all): -valve does not open completely

Indicate which ion is involved in each event being described by using the answer code (options may be used more than once or not at all): -Changes in cytosolic _____ concentration bring about changes in the strength of cardiac contraction.

What is the membrane potential of cardiac muscle cells at rest?

With 2:1 rhythm,the atrial rate is very rapid and the ventricular rate is normal or above normal,whereas with 2:1 block,the atrial rate is normal but the ventricular rate is below normal

What does the term systole mean?

Match heart characteristic with correct anatomical structure by using the answer code (options may be used more than once or not at all): -the ventricles' left is much thicker

Not all forms of LDL are equally harmful to the heart.

When ECF K⁺ levels fall below normal,the heart becomes weak,flaccid,and dilated.

Complete the following statements by using the answer code (options may be used more than once or not at all): -Stroke volume can be increased by increasing end-diastolic volume and _____.

On a normal ECG,a wave for repolarization of the atria is not recorded.Why?

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System

Principals of Endocrinology; The Central Endocrine Glands

Muscle Physiology

Vascular Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acid Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine Glands

The Reproductive System

Filters

Exam 7: Cardiac Physiology

The semilunar valves close to prevent the backflow of blood into the ventricles.

Match the cardiovascular feature with the correct characteristic by using the answer code: -consists of abnormal smooth muscle cells,cholesterol deposits,scar tissue,and possible calcium deposits plaque

An increase in the length of the cardiac muscle fibres prior to contraction ____________________ the stroke volume.

Indicate which valve abnormality is being described by using the answer code (options may be used more than once or not at all): -valve does not open completely

Indicate which ion is involved in each event being described by using the answer code (options may be used more than once or not at all): -Changes in cytosolic _____ concentration bring about changes in the strength of cardiac contraction.

What is the membrane potential of cardiac muscle cells at rest?

With 2:1 rhythm,the atrial rate is very rapid and the ventricular rate is normal or above normal,whereas with 2:1 block,the atrial rate is normal but the ventricular rate is below normal

What does the term systole mean?

Match heart characteristic with correct anatomical structure by using the answer code (options may be used more than once or not at all): -the ventricles' left is much thicker

Not all forms of LDL are equally harmful to the heart.

When ECF K⁺ levels fall below normal,the heart becomes weak,flaccid,and dilated.

Complete the following statements by using the answer code (options may be used more than once or not at all): -Stroke volume can be increased by increasing end-diastolic volume and _____.

On a normal ECG,a wave for repolarization of the atria is not recorded.Why?

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System

Principals of Endocrinology; The Central Endocrine Glands

Muscle Physiology

Vascular Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acid Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine Glands

The Reproductive System

Filters