Question 1

Match EKG feature with the correct characteristic.
a.P wave
b.QRS complex
c.T wave
d.PR interval
e.TP interval
f.ST segment
-Ventricular depolarization

Accepted Answer

The answer of Match EKG feature with the correct characteristic.
a.P...

Question 2

Oxygenated blood would pass through the mitral valve and pulmonary valves, but would not pass through the tricuspid valve.

Accepted Answer

A) True 
 B)False

Question 3

Match EKG feature with the correct characteristic.
a.P wave
b.QRS complex
c.T wave
d.PR interval
e.TP interval
f.ST segment
-Ventricular repolarization

Accepted Answer

The answer of Match EKG feature with the correct characteristic.
a.P...

Question 4

Indicate which ion is involved in each event being described by using the following answer code.
a.K+
b.Na+
c.Ca₂₊
-Parasympathetic stimulation increases the permeability of the SA node to _____, whereas sympathetic stimulation decreases the permeability to this same ion.

Accepted Answer

The answer of Indicate which ion is involved in each...

Question 5

According to the Frank-Starling law of the heart,

Accepted Answer

A) shortening cardiac muscle fibers prior to contraction causes more forceful contractions 
B) increasing venous return increases EDV, which leads to an increased stroke volume 
C) as cardiac output decreases, blood pools in the vasculature and increases arterial blood pressure 
D) the left ventricle must pump more blood than the right ventricle since the left ventricle must pump blood to more regions of the body 
E) the greater the stroke volume, the smaller the subsequent ESV, because as more blood is squeezed out, the heart cannot fill as completely. 
A) shortening cardiac muscle fibers prior to contraction causes more forceful contractions 
B) increasing venous return increases EDV, which leads to an increased stroke volume 
C) as cardiac output decreases, blood pools in the vasculature and increases arterial blood pressure 
D) the left ventricle must pump more blood than the right ventricle since the left ventricle must pump blood to more regions of the body 
E) the greater the stroke volume, the smaller the subsequent ESV, because as more blood is squeezed out, the heart cannot fill as completely.

Question 6

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. 
E) It is too small to be picked up by external recording electrodes. 
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. 
E) It is too small to be picked up by external recording electrodes.

Question 7

Although not seen on an ECG, the period of isovolumetric relaxation would occur nearest which deflection on the ECG?

Accepted Answer

The answer of Although not seen on an ECG, the...

Question 8

Left-sided congestive heart failure can lead to pulmonary edema.

Accepted Answer

A) True 
 B)False

Question 9

An increase in stroke volume ____________________ ESV.

Accepted Answer

The answer of An increase in stroke volume ____________________ ESV....

Question 10

Using the following answer code, indicate which pressure relationship exists during the time in question. a.aortic pressure > ventricular pressure > atrial pressure b.aortic pressure > ventricular pressure atrial pressure d.aortic pressure < ventricular pressure < atrial pressure -During isovolumetric ventricular relaxation

Accepted Answer

The answer of Using the following answer code, indicate which...

Question 11

Atrial flutter is characterized by a ____ rhythm, as impulses pass from the AV node to the ventricles.

Accepted Answer

A) 1:1 
B) 2:1 
C) 3:4 
D) 5:2 
E) 7:1 
A) 1:1 
B) 2:1 
C) 3:4 
D) 5:2 
E) 7:1

Question 12

Sympathetic stimulation of the heart

Accepted Answer

A) increases the heart rate 
B) increases the heart's contractility 
C) shifts the Frank-Starling curve to the left 
D) involves the release of norepinephrine 
E) causes all of the above 
A) increases the heart rate 
B) increases the heart's contractility 
C) shifts the Frank-Starling curve to the left 
D) involves the release of norepinephrine 
E) causes all of the above

Question 13

Complete heart block results from a damaged AV node.

Accepted Answer

A) True 
 B)False

Question 14

The SA node is the only part of the heart that can function as the heart's pacemaker.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following ECG waves represents ventricular repolarization?

Accepted Answer

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

Question 16

Match heart characteristic with correct anatomical structure.
a.tricuspid valve
b.myocardium
c.aortic semilunar valve
d.AV node
e.sinoatrial node
-In a normal heart, its fast Ca²⁺ channels initiate action potentials that determine heart rate

Accepted Answer

The answer of Match heart characteristic with correct anatomical structure.
a.tricuspid...

Question 17

The only point of electrical contact between the atria and the ventricles is the AV valve.

Accepted Answer

A) True 
 B)False

Question 18

Oxygenated blood flows through semilunar valves, whereas deoxygenated blood flows through AV valves.

Accepted Answer

A) True 
 B)False

Question 19

Match EKG feature with the correct characteristic.
a.P wave
b.QRS complex
c.T wave
d.PR interval
e.TP interval
f.ST segment
-Atrial depolarization

Accepted Answer

The answer of Match EKG feature with the correct characteristic.
a.P...

Question 20

The period lasting from closure of the AV valve to opening of the aortic valve is known as

Accepted Answer

A) isovolumetric ventricular contraction 
B) isovolumetric ventricular relaxation 
C) the rapid ejection phase 
D) the rapid filling phase 
E) ventricular diastole 
A) isovolumetric ventricular contraction 
B) isovolumetric ventricular relaxation 
C) the rapid ejection phase 
D) the rapid filling phase 
E) ventricular diastole

Match EKG feature with the correct characteristic. a.P wave b.QRS complex c.T wave d.PR interval e.TP interval f.ST segment -Ventricular depolarization

Oxygenated blood would pass through the mitral valve and pulmonary valves, but would not pass through the tricuspid valve.

Match EKG feature with the correct characteristic. a.P wave b.QRS complex c.T wave d.PR interval e.TP interval f.ST segment -Ventricular repolarization

Indicate which ion is involved in each event being described by using the following answer code. a.K+ b.Na+ c.Ca₂₊ -Parasympathetic stimulation increases the permeability of the SA node to _____, whereas sympathetic stimulation decreases the permeability to this same ion.

According to the Frank-Starling law of the heart,

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

Although not seen on an ECG, the period of isovolumetric relaxation would occur nearest which deflection on the ECG?

Left-sided congestive heart failure can lead to pulmonary edema.

An increase in stroke volume ____________________ ESV.

Atrial flutter is characterized by a ____ rhythm, as impulses pass from the AV node to the ventricles.

Sympathetic stimulation of the heart

Complete heart block results from a damaged AV node.

The SA node is the only part of the heart that can function as the heart's pacemaker.

Which of the following ECG waves represents ventricular repolarization?

Match heart characteristic with correct anatomical structure. a.tricuspid valve b.myocardium c.aortic semilunar valve d.AV node e.sinoatrial node -In a normal heart, its fast Ca²⁺ channels initiate action potentials that determine heart rate

The only point of electrical contact between the atria and the ventricles is the AV valve.

Oxygenated blood flows through semilunar valves, whereas deoxygenated blood flows through AV valves.

Match EKG feature with the correct characteristic. a.P wave b.QRS complex c.T wave d.PR interval e.TP interval f.ST segment -Atrial depolarization

The period lasting from closure of the AV valve to opening of the aortic valve is known as

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

The Peripheral Nervous System: Efferent Division

Muscle Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

Principles of Endocrinology: the Central Endocrine Glands

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The Reproductive System

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Exam 9: Cardiac Physiology

Match EKG feature with the correct characteristic. a.P wave b.QRS complex c.T wave d.PR interval e.TP interval f.ST segment -Ventricular depolarization

Oxygenated blood would pass through the mitral valve and pulmonary valves, but would not pass through the tricuspid valve.

Match EKG feature with the correct characteristic. a.P wave b.QRS complex c.T wave d.PR interval e.TP interval f.ST segment -Ventricular repolarization

Indicate which ion is involved in each event being described by using the following answer code. a.K+ b.Na+ c.Ca₂₊ -Parasympathetic stimulation increases the permeability of the SA node to _____, whereas sympathetic stimulation decreases the permeability to this same ion.

According to the Frank-Starling law of the heart,

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

Although not seen on an ECG, the period of isovolumetric relaxation would occur nearest which deflection on the ECG?

Left-sided congestive heart failure can lead to pulmonary edema.

An increase in stroke volume ____________________ ESV.

Atrial flutter is characterized by a ____ rhythm, as impulses pass from the AV node to the ventricles.

Sympathetic stimulation of the heart

Complete heart block results from a damaged AV node.

The SA node is the only part of the heart that can function as the heart's pacemaker.

Which of the following ECG waves represents ventricular repolarization?

Match heart characteristic with correct anatomical structure. a.tricuspid valve b.myocardium c.aortic semilunar valve d.AV node e.sinoatrial node -In a normal heart, its fast Ca²⁺ channels initiate action potentials that determine heart rate

The only point of electrical contact between the atria and the ventricles is the AV valve.

Oxygenated blood flows through semilunar valves, whereas deoxygenated blood flows through AV valves.

Match EKG feature with the correct characteristic. a.P wave b.QRS complex c.T wave d.PR interval e.TP interval f.ST segment -Atrial depolarization

The period lasting from closure of the AV valve to opening of the aortic valve is known as

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

The Peripheral Nervous System: Efferent Division

Muscle Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

Principles of Endocrinology: the Central Endocrine Glands

The Peripheral Endocrine Glands

The Reproductive System

Filters