Question 1

Which of these events happens in an insufficient AV valve?

Accepted Answer

A) The AV valve fails to open completely. 
B) The AV valve produces a gurgling diastolic murmur. 
C)  The AV valve produces a gurgling systolic murmur. 
D)  The AV valve fails to close completely. 
A) The AV valve fails to open completely. 
B) The AV valve produces a gurgling diastolic murmur. 
C)  The AV valve produces a gurgling systolic murmur. 
D)  The AV valve fails to close completely.

Question 2

Match the EKG features, labelled f., with their correct characteristic.a. through
a.P wave
b.QRS complex
c.T wave
d.PR interval
e.TP interval
f.ST segment
-time during which ventricles are filling

Accepted Answer

The answer of Match the EKG features, labelled f., with...

Question 3

Parasympathetic stimulation of the AV node increases the speed of transmission of the impulse through the AV node.

Accepted Answer

A) True 
 B)False

Question 4

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 5

How does hypertension influence heart activity?

Accepted Answer

The answer of How does hypertension influence heart activity?...

Question 6

The extent of myocardial infarction is dependent on ____________________ and ____________________.

Accepted Answer

the size of the occluded vesse

Question 7

Which of these is the low-resistance pathway that permits electrical activity to pass from cell to cell in myocardial tissue?

Accepted Answer

A) desmosome 
B) septum 
C)  gap junction 
D)  T-tubule
2 
A) desmosome 
B) septum 
C)  gap junction 
D)  T-tubule
2

Question 8

If the EDV were held constant, what could accomplish increased stroke volume?

Accepted Answer

A) increased sympathetic nerve activity to the heart 
B) increased parasympathetic nerve activity to the heart 
C)  decreased contractility 
D)  increased arterial blood pressure 
A) increased sympathetic nerve activity to the heart 
B) increased parasympathetic nerve activity to the heart 
C)  decreased contractility 
D)  increased arterial blood pressure

Question 9

Match the term, labelled a. through g., with their correct characteristic.
a.gap junction
b.HDL
c.functional syncytium
d.heart valve
e.pericardial sac
f.LDL
g.adenosine
-What is the proper sequence of blood flow through the circulatory system?
1. right atrium 
2. left atrium 
3. right ventricle
4. left ventricle 
5. pulmonary artery 
6. pulmonary vein
7. lungs
 8. systemic tissues
9. aorta
10. venae cavae

Accepted Answer

10, 1, 3,

Question 10

Which of these events is happening during the isovolumetric phase of ventricular systole?

Accepted Answer

A) The ventricles are relaxed isometrically. 
B) The atrioventricular valves and semilunar valves are closed. 
C)  Blood is being ejected into the great vessels. 
D)  Venous blood is flowing back to the heart. 
A) The ventricles are relaxed isometrically. 
B) The atrioventricular valves and semilunar valves are closed. 
C)  Blood is being ejected into the great vessels. 
D)  Venous blood is flowing back to the heart.

Question 11

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 as 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 as 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 12

Atrial repolarization does not occur.

Accepted Answer

A) True 
 B)False

Question 13

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 14

The ____________________ is the difference between cardiac output at rest and maximal CO.

Accepted Answer

The answer of The ____________________ is the difference between cardiac...

Question 15

Match the term, labelled a. through g., with their correct characteristic.
a.gap junction
b.HDL
c.functional syncytium
d.heart valve
e.pericardial sac
f.LDL
g.adenosine
-muscle mass that becomes excited and contracts as a unit

Accepted Answer

The answer of Match the term, labelled a. through g.,...

Question 16

Compare and contrast intrinsic and extrinsic controls of cardiac activity.

Accepted Answer

The answer of Compare and contrast intrinsic and extrinsic controls...

Question 17

When does blood flow occur through the coronary circulation?

Accepted Answer

A) mainly during systole 
B) mainly during diastole 
C)  almost equally during systole and diastole 
D)  only during ventricular isovolumetric contraction 
A) mainly during systole 
B) mainly during diastole 
C)  almost equally during systole and diastole 
D)  only during ventricular isovolumetric contraction

Question 18

Match the valve abnormalities, labelled a. and b., with the descriptions. (Options may be used more than once or not at all.)
a.valvular stenosis
b.valvular insufficiency
-produces a "whistling" murmur

Accepted Answer

The answer of Match the valve abnormalities, labelled a. and...

Question 19

Match the effects with sympathetic or parasympathetic stimulation (or neither) of the heart. (Options may be used more than once or not at all.)
a.effect caused by sympathetic stimulation
b.effect caused by parasympathetic stimulation
c.not brought about by either sympathetic or parasympathetic stimulation
-increases the heart rate

Accepted Answer

The answer of Match the effects with sympathetic or parasympathetic...

Question 20

Complete heart block results from a damaged AV node.

Accepted Answer

A) True 
 B)False

Which of these events happens in an insufficient AV valve?

Match the EKG features, labelled f., with their correct characteristic.a. through a.P wave b.QRS complex c.T wave d.PR interval e.TP interval f.ST segment -time during which ventricles are filling

Parasympathetic stimulation of the AV node increases the speed of transmission of the impulse through the AV node.

Which of the following occurs when an individual is sympathetically stimulated?

How does hypertension influence heart activity?

The extent of myocardial infarction is dependent on and .

Which of these is the low-resistance pathway that permits electrical activity to pass from cell to cell in myocardial tissue?

If the EDV were held constant, what could accomplish increased stroke volume?

Which of these events is happening during the isovolumetric phase of ventricular systole?

What is the primary function of the pericardial sac?

Atrial repolarization does not occur.

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

The ____________________ is the difference between cardiac output at rest and maximal CO.

Match the term, labelled a. through g., with their correct characteristic. a.gap junction b.HDL c.functional syncytium d.heart valve e.pericardial sac f.LDL g.adenosine -muscle mass that becomes excited and contracts as a unit

Compare and contrast intrinsic and extrinsic controls of cardiac activity.

When does blood flow occur through the coronary circulation?

Match the valve abnormalities, labelled a. and b., with the descriptions. (Options may be used more than once or not at all.) a.valvular stenosis b.valvular insufficiency -produces a "whistling" murmur

Complete heart block results from a damaged AV node.

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division; Special Senses

Muscle Physiology

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

Filters

Exam 7: The Peripheral Nervous System: Efferent Division

Which of these events happens in an insufficient AV valve?

Match the EKG features, labelled f., with their correct characteristic.a. through a.P wave b.QRS complex c.T wave d.PR interval e.TP interval f.ST segment -time during which ventricles are filling

Parasympathetic stimulation of the AV node increases the speed of transmission of the impulse through the AV node.

Which of the following occurs when an individual is sympathetically stimulated?

How does hypertension influence heart activity?

The extent of myocardial infarction is dependent on ____________________ and ____________________.

Which of these is the low-resistance pathway that permits electrical activity to pass from cell to cell in myocardial tissue?

If the EDV were held constant, what could accomplish increased stroke volume?

Which of these events is happening during the isovolumetric phase of ventricular systole?

What is the primary function of the pericardial sac?

Atrial repolarization does not occur.

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

The ____________________ is the difference between cardiac output at rest and maximal CO.

Match the term, labelled a. through g., with their correct characteristic. a.gap junction b.HDL c.functional syncytium d.heart valve e.pericardial sac f.LDL g.adenosine -muscle mass that becomes excited and contracts as a unit

Compare and contrast intrinsic and extrinsic controls of cardiac activity.

When does blood flow occur through the coronary circulation?

Match the valve abnormalities, labelled a. and b., with the descriptions. (Options may be used more than once or not at all.) a.valvular stenosis b.valvular insufficiency -produces a "whistling" murmur

Complete heart block results from a damaged AV node.

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division; Special Senses

Muscle Physiology

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

Filters

The extent of myocardial infarction is dependent on and .