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 -Time when threshold voltage is reached in pacemaker cells

(Short Answer)

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(75)

Question 41

An increase in parasympathetic activity ____________________ the atrial contractility.

(Short Answer)

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Question 42

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

(True/False)

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Question 43

Indicate which valve abnormality is being described using the answer code below. a.valvular stenosis b.valvular insufficiency -Valve does not close completely

(Short Answer)

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Question 44

Semilunar valves prevent backflow of blood from

(Multiple Choice)

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Question 45

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.

(True/False)

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Question 46

The ____________________ are the kinds of blood vessels that experience congestion for congestive heart failure.

(Short Answer)

4.8/5

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Question 47

Use this figure to answer the corresponding questions. -Identify the location(s) that indicates when fast calcium channels open within the cell. a.1 b.2 and 3 c.2, 3, and 4 d.1 and 4 e.There are no fast calcium channels in these cells.

(Short Answer)

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(77)

Question 48

The first heart sound

(Multiple Choice)

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Question 49

The heart chamber that has the greatest work load is

(Multiple Choice)

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Question 50

Use the following answer code to compare the magnitude of the items in question. a.A is greater than b.b.B is greater than a.c.A and B are equal or nearly equal. -a.Spontaneous rate of depolarization in the SA node B.Spontaneous rate of depolarization in the ventricles

(Short Answer)

5.0/5

(75)

Question 51

Parasympathetic innervation to the heart

(Multiple Choice)

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Question 52

Which is the normal sequence of the spread of cardiac excitation? 1)AV node 2)SA node 3)atria 4)Purkinje fibers 5)bundle of His 6)ventricular myocardium

(Multiple Choice)

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(87)

Question 53

The stroke volume is the total volume of blood ejected by both ventricles each minute.

(True/False)

4.8/5

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Question 54

The ___ phase of the action potential in _ cells is due to a ___.

(Multiple Choice)

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Question 55

Increased ____ permeability of nodal cells hyperpolarizes the SA node.

(Multiple Choice)

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Question 56

Indicate which ion is involved in each event being described by using the following answer code. a.K+ b.Na+ c.Ca₂₊ -The rapid falling phase of the cardiac action potential is brought about primarily by the outward diffusion of _____.

(Short Answer)

4.8/5

(95)

Question 57

The extent of ventricular filling is the preload of the heart, whereas the magnitude of the arterial blood pressure is the afterload of the heart.

(True/False)

4.8/5

(79)

Question 58

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

(Multiple Choice)

4.7/5

(83)

Question 59

The ____________________ delay ensures that atrial systole is complete before ventricular systole begins.

(Short Answer)

4.7/5

(87)

Question 60

Showing 41 - 60 of 300

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 -Time when threshold voltage is reached in pacemaker cells

An increase in parasympathetic activity ____________________ the atrial contractility.

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

Indicate which valve abnormality is being described using the answer code below. a.valvular stenosis b.valvular insufficiency -Valve does not close completely

Semilunar valves prevent backflow of blood from

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.

The ____________________ are the kinds of blood vessels that experience congestion for congestive heart failure.

Use this figure to answer the corresponding questions. -Identify the location(s) that indicates when fast calcium channels open within the cell. a.1 b.2 and 3 c.2, 3, and 4 d.1 and 4 e.There are no fast calcium channels in these cells.

The first heart sound

The heart chamber that has the greatest work load is

Use the following answer code to compare the magnitude of the items in question. a.A is greater than b.b.B is greater than a.c.A and B are equal or nearly equal. -a.Spontaneous rate of depolarization in the SA node B.Spontaneous rate of depolarization in the ventricles

Parasympathetic innervation to the heart

Which is the normal sequence of the spread of cardiac excitation? 1)AV node 2)SA node 3)atria 4)Purkinje fibers 5)bundle of His 6)ventricular myocardium

The stroke volume is the total volume of blood ejected by both ventricles each minute.

The ___ phase of the action potential in _ cells is due to a ___.

Increased ____ permeability of nodal cells hyperpolarizes the SA node.

Indicate which ion is involved in each event being described by using the following answer code. a.K+ b.Na+ c.Ca₂₊ -The rapid falling phase of the cardiac action potential is brought about primarily by the outward diffusion of _____.

The extent of ventricular filling is the preload of the heart, whereas the magnitude of the arterial blood pressure is the afterload of the heart.

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

The ____________________ delay ensures that atrial systole is complete before ventricular systole begins.

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

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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 -Time when threshold voltage is reached in pacemaker cells

An increase in parasympathetic activity ____________________ the atrial contractility.

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

Indicate which valve abnormality is being described using the answer code below. a.valvular stenosis b.valvular insufficiency -Valve does not close completely

Semilunar valves prevent backflow of blood from

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.

The ____________________ are the kinds of blood vessels that experience congestion for congestive heart failure.

Use this figure to answer the corresponding questions. -Identify the location(s) that indicates when fast calcium channels open within the cell. a.1 b.2 and 3 c.2, 3, and 4 d.1 and 4 e.There are no fast calcium channels in these cells.

The first heart sound

The heart chamber that has the greatest work load is

Use the following answer code to compare the magnitude of the items in question. a.A is greater than b.b.B is greater than a.c.A and B are equal or nearly equal. -a.Spontaneous rate of depolarization in the SA node B.Spontaneous rate of depolarization in the ventricles

Parasympathetic innervation to the heart

Which is the normal sequence of the spread of cardiac excitation? 1)AV node 2)SA node 3)atria 4)Purkinje fibers 5)bundle of His 6)ventricular myocardium

The stroke volume is the total volume of blood ejected by both ventricles each minute.

The _____ phase of the action potential in _____ cells is due to a _____.

Increased ____ permeability of nodal cells hyperpolarizes the SA node.

Indicate which ion is involved in each event being described by using the following answer code. a.K+ b.Na+ c.Ca₂₊ -The rapid falling phase of the cardiac action potential is brought about primarily by the outward diffusion of _____.

The extent of ventricular filling is the preload of the heart, whereas the magnitude of the arterial blood pressure is the afterload of the heart.

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

The ____________________ delay ensures that atrial systole is complete before ventricular systole begins.

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

The ___ phase of the action potential in _ cells is due to a ___.