Question 1

What is a metabolic predictor of heart disease that is independent of one's cholesterol/lipid profile?

Accepted Answer

A) HDL 
B) VLDL 
C)  homocysteine 
D)  methionine 
A) HDL 
B) VLDL 
C)  homocysteine 
D)  methionine

Question 2

Which of these terms refers to the volume of blood ejected from each ventricle during a contraction?

Accepted Answer

A) end-diastolic volume 
B) end-systolic volume 
C)  stroke volume 
D)  cardiac output 
A) end-diastolic volume 
B) end-systolic volume 
C)  stroke volume 
D)  cardiac output

Question 3

An increase in cardiac sympathetic activity ____________________ the permeability of the SA node to K ions.

Accepted Answer

The answer of An increase in cardiac sympathetic activity ____________________...

Question 4

Match the anatomical structures, labelled e., with the heart characteristics. (Options may be used more than once or not at all.)a. through 
a.tricuspid valve
b.myocardium
c.aortic semilunar valve
d.AV node
e.sinoatrial node
-during systole, it is forced closed by papillary muscle action

Accepted Answer

The answer of Match the anatomical structures, labelled e., with...

Question 5

A condition in which the heart is contracting in an uncontrolled, rapid, and irregular manner _______________

Accepted Answer

A) is probably heart block. 
B) is probably fibrillation. 
C)  is probably tachycardia 
D)  is called bradycardia. 
A) is probably heart block. 
B) is probably fibrillation. 
C)  is probably tachycardia 
D)  is called bradycardia.

Question 6

Atrial systole lasts throughout ventricular systole.

Accepted Answer

A) True 
 B)False

Question 7

The SA node is the pacemaker of the heart.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following is the cranial nerve of the parasympathetic nervous system that signals the heart?

Accepted Answer

A) cardiac 
B) coronary 
C)  trigeminal 
D)  vagus 
A) cardiac 
B) coronary 
C)  trigeminal 
D)  vagus

Question 9

An increase in parasympathetic activity ____________________ the stroke volume.

Accepted Answer

The answer of An increase in parasympathetic activity ____________________ the...

Question 10

Which of these events will happen if the connection between the SA node and the AV node becomes blocked?

Accepted Answer

A) The ventricles will beat faster. 
B) The stroke volume will increase. 
C)  The ventricular rate of contraction will not be affected. 
D)  The ventricles will contract more slowly. 
A) The ventricles will beat faster. 
B) The stroke volume will increase. 
C)  The ventricular rate of contraction will not be affected. 
D)  The ventricles will contract more slowly.

Question 11

Which of these ECG waves represents ventricular repolarization?

Accepted Answer

A) P wave 
B) QRS complex 
C)  T wave 
D)  Ventricular repolarization occurs simultaneously with atrial depolarization and consequently cannot be recorded. 
A) P wave 
B) QRS complex 
C)  T wave 
D)  Ventricular repolarization occurs simultaneously with atrial depolarization and consequently cannot be recorded.

Question 12

Match the anatomical structures, labelled e., with the heart characteristics. (Options may be used more than once or not at all.)a. through 
a.tricuspid valve
b.myocardium
c.aortic semilunar valve
d.AV node
e.sinoatrial node
-its fast Ca2+ channels help initiate

Accepted Answer

Question 13

Describe generation of pacemaker action potentials and the cardiac conduction pathway.

Accepted Answer

The generation of pacemaker action poten

Question 14

A patient has an EDV of 85 mL and an ESV of 35 mL with a heart rate of 50. What is this patient's cardiac output?

Accepted Answer

A) 2500 mL/min, or 2.5 L/min 
B) 3500 mL/min, or 3.5 L/min 
C)  4500 mL/min, or 4.5 L/min 
D)  6500 mL/min, or 6.5 L/min 
A) 2500 mL/min, or 2.5 L/min 
B) 3500 mL/min, or 3.5 L/min 
C)  4500 mL/min, or 4.5 L/min 
D)  6500 mL/min, or 6.5 L/min

Question 15

Why is the sinoatrial node the heart's normal pacemaker?

Accepted Answer

A) It has the fastest natural rate of autorhythmicity. 
B) It has both sympathetic and parasympathetic innervation. 
C)  It is under the control of AV node. 
D)  Activation of K+ channels occurs more rapidly in this region than elsewhere in the heart. 
A) It has the fastest natural rate of autorhythmicity. 
B) It has both sympathetic and parasympathetic innervation. 
C)  It is under the control of AV node. 
D)  Activation of K+ channels occurs more rapidly in this region than elsewhere in the heart.

Question 16

The electrocardiogram is most useful in determining which component of cardiac output?

Accepted Answer

A) stroke volume 
B) end-diastolic volume 
C)  ejection fraction 
D)  heart rate 
A) stroke volume 
B) end-diastolic volume 
C)  ejection fraction 
D)  heart rate

Question 17

Match the anatomical structures, labelled e., with the heart characteristics. (Options may be used more than once or not at all.)a. through 
a.tricuspid valve
b.myocardium
c.aortic semilunar valve
d.AV node
e.sinoatrial node
-contraction of this generates blood pressure

Accepted Answer

The answer of Match the anatomical structures, labelled e., with...

Question 18

Match the anatomical structures, labelled e., with the heart characteristics. (Options may be used more than once or not at all.)a. through 
a.tricuspid valve
b.myocardium
c.aortic semilunar valve
d.AV node
e.sinoatrial node
-its cells have slow Ca2+ channels

Accepted Answer

Question 19

A pacemaker potential depends on the increased inward current of calcium ions.

Accepted Answer

A) True 
 B)False

Question 20

Angina pectoris develops from the abundance of oxygen of blood in the coronary circulation.

Accepted Answer

A) True 
 B)False

What is a metabolic predictor of heart disease that is independent of one's cholesterol/lipid profile?

Which of these terms refers to the volume of blood ejected from each ventricle during a contraction?

An increase in cardiac sympathetic activity ____________________ the permeability of the SA node to K ions.

Match the anatomical structures, labelled e., with the heart characteristics. (Options may be used more than once or not at all.)a. through a.tricuspid valve b.myocardium c.aortic semilunar valve d.AV node e.sinoatrial node -during systole, it is forced closed by papillary muscle action

A condition in which the heart is contracting in an uncontrolled, rapid, and irregular manner _______________

Atrial systole lasts throughout ventricular systole.

The SA node is the pacemaker of the heart.

Which of the following is the cranial nerve of the parasympathetic nervous system that signals the heart?

An increase in parasympathetic activity ____________________ the stroke volume.

Which of these events will happen if the connection between the SA node and the AV node becomes blocked?

Which of these ECG waves represents ventricular repolarization?

Match the anatomical structures, labelled e., with the heart characteristics. (Options may be used more than once or not at all.)a. through a.tricuspid valve b.myocardium c.aortic semilunar valve d.AV node e.sinoatrial node -its fast Ca²⁺ channels help initiate

Describe generation of pacemaker action potentials and the cardiac conduction pathway.

A patient has an EDV of 85 mL and an ESV of 35 mL with a heart rate of 50. What is this patient's cardiac output?

Why is the sinoatrial node the heart's normal pacemaker?

The electrocardiogram is most useful in determining which component of cardiac output?

Match the anatomical structures, labelled e., with the heart characteristics. (Options may be used more than once or not at all.)a. through a.tricuspid valve b.myocardium c.aortic semilunar valve d.AV node e.sinoatrial node -contraction of this generates blood pressure

Match the anatomical structures, labelled e., with the heart characteristics. (Options may be used more than once or not at all.)a. through a.tricuspid valve b.myocardium c.aortic semilunar valve d.AV node e.sinoatrial node -its cells have slow Ca²⁺ channels

A pacemaker potential depends on the increased inward current of calcium ions.

Angina pectoris develops from the abundance of oxygen of blood in the coronary circulation.

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

What is a metabolic predictor of heart disease that is independent of one's cholesterol/lipid profile?

Which of these terms refers to the volume of blood ejected from each ventricle during a contraction?

An increase in cardiac sympathetic activity ____________________ the permeability of the SA node to K ions.

Match the anatomical structures, labelled e., with the heart characteristics. (Options may be used more than once or not at all.)a. through a.tricuspid valve b.myocardium c.aortic semilunar valve d.AV node e.sinoatrial node -during systole, it is forced closed by papillary muscle action

A condition in which the heart is contracting in an uncontrolled, rapid, and irregular manner _______________

Atrial systole lasts throughout ventricular systole.

The SA node is the pacemaker of the heart.

Which of the following is the cranial nerve of the parasympathetic nervous system that signals the heart?

An increase in parasympathetic activity ____________________ the stroke volume.

Which of these events will happen if the connection between the SA node and the AV node becomes blocked?

Which of these ECG waves represents ventricular repolarization?

Match the anatomical structures, labelled e., with the heart characteristics. (Options may be used more than once or not at all.)a. through a.tricuspid valve b.myocardium c.aortic semilunar valve d.AV node e.sinoatrial node -its fast Ca2+ channels help initiate

Describe generation of pacemaker action potentials and the cardiac conduction pathway.

A patient has an EDV of 85 mL and an ESV of 35 mL with a heart rate of 50. What is this patient's cardiac output?

Why is the sinoatrial node the heart's normal pacemaker?

The electrocardiogram is most useful in determining which component of cardiac output?

Match the anatomical structures, labelled e., with the heart characteristics. (Options may be used more than once or not at all.)a. through a.tricuspid valve b.myocardium c.aortic semilunar valve d.AV node e.sinoatrial node -contraction of this generates blood pressure

Match the anatomical structures, labelled e., with the heart characteristics. (Options may be used more than once or not at all.)a. through a.tricuspid valve b.myocardium c.aortic semilunar valve d.AV node e.sinoatrial node -its cells have slow Ca2+ channels

A pacemaker potential depends on the increased inward current of calcium ions.

Angina pectoris develops from the abundance of oxygen of blood in the coronary circulation.

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

Match the anatomical structures, labelled e., with the heart characteristics. (Options may be used more than once or not at all.)a. through a.tricuspid valve b.myocardium c.aortic semilunar valve d.AV node e.sinoatrial node -its fast Ca²⁺ channels help initiate

Match the anatomical structures, labelled e., with the heart characteristics. (Options may be used more than once or not at all.)a. through a.tricuspid valve b.myocardium c.aortic semilunar valve d.AV node e.sinoatrial node -its cells have slow Ca²⁺ channels