Match the ions, labelled a. through c., with the events being described. (Options may be used more than once or not at all.) a.KS1U1P1+S1S1P0 b.NaS1U1P1+S1S1P0 c.CaS1U1P12+S1S1P0 -Parasympathetic stimulation increases the permeability of the SA node to _____, whereas sympathetic stimulation decreases the permeability to this same ion.

The answer of Match the ions, labelled a. through c.,...

Match the ions, labelled a. through c., with the events being described. (Options may be used more than once or not at all.) a.KS1U1P1+S1S1P0 b.NaS1U1P1+S1S1P0 c.CaS1U1P12+S1S1P0 -Changes in cytosolic _____ concentration bring about changes in the strength of cardiac contraction.

The answer of Match the ions, labelled a. through c.,...

Exam 7: The Peripheral Nervous System: Efferent Division

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 -decreases the contractility of the atrial muscle

(Short Answer)

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Question 101

Match the terms, labelled a. through f., with the descriptions. (Options may be used more than once or not at all.) a.stroke volume b.end-diastolic volume c.cardiac output d.heart rate e.end-systolic volume f.sympathetic activity -Stroke volume can be increased by increasing end-diastolic volume and _____.

(Short Answer)

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Question 102

What is the normal direction of the impulse through the conduction system of the heart for each cardiac cycle?

(Multiple Choice)

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Question 103

Match the ions, labelled a. through c., with the events being described. (Options may be used more than once or not at all.) 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.

(Short Answer)

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Question 104

Match the factor involved in the initiation and spread of cardiac excitation, labelled d. with the description. (Options may be used more than once or not at all.)a. through a.SA node b.AV node c.bundle of His and Purkinje system d.gap junction -the normal pacemaker of the heart

(Short Answer)

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Question 105

Which of these statements correctly describes the systemic circulation?

(Multiple Choice)

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Question 106

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

(True/False)

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Question 107

The AV valve controls the amount of blood entering the atrium from the venous system.

(True/False)

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Question 108

An increase in parasympathetic activity ____________________ the heart rate.

(Short Answer)

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Question 109

The refractory period in cardiac muscle is much shorter than the refractory period in skeletal muscle to ensure that the heart can quickly be restimulated to produce alternate periods of contraction and relaxation.

(True/False)

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Question 110

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 "gurgling" murmur

(Short Answer)

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Question 111

Which of these events happens when the heart is sympathetically stimulated?

(Multiple Choice)

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Question 112

Match the ions, labelled a. through c., with the events being described. (Options may be used more than once or not at all.) a.K⁺ b.Na⁺ c.Ca²⁺ -Changes in cytosolic _____ concentration bring about changes in the strength of cardiac contraction.

(Short Answer)

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Question 113

Which of these events occurs at rapid heart rates?

(Multiple Choice)

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Question 114

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 -ventricular depolarization

(Short Answer)

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Question 115

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

(True/False)

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Question 116

The semilunar valves are positioned between the atria and ventricles.

(True/False)

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Question 117

The condition in which the pericardial sac becomes distended with excess fluid to the point that it impinges upon cardiac filling is known as ____________________.

(Short Answer)

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Question 118

The amount of blood pumped out of the heart during each beat is known as the cardiac output.

(True/False)

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Question 119

What happens during isovolumetric ventricular contraction?

(Multiple Choice)

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Question 120

Showing 101 - 120 of 267

What is the normal direction of the impulse through the conduction system of the heart for each cardiac cycle?

Match the factor involved in the initiation and spread of cardiac excitation, labelled d. with the description. (Options may be used more than once or not at all.)a. through a.SA node b.AV node c.bundle of His and Purkinje system d.gap junction -the normal pacemaker of the heart

Which of these statements correctly describes the systemic circulation?

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

The AV valve controls the amount of blood entering the atrium from the venous system.

An increase in parasympathetic activity ____________________ the heart rate.

The refractory period in cardiac muscle is much shorter than the refractory period in skeletal muscle to ensure that the heart can quickly be restimulated to produce alternate periods of contraction and relaxation.

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 "gurgling" murmur

Which of these events happens when the heart is sympathetically stimulated?

Match the ions, labelled a. through c., with the events being described. (Options may be used more than once or not at all.) a.K⁺ b.Na⁺ c.Ca²⁺ -Changes in cytosolic _____ concentration bring about changes in the strength of cardiac contraction.

Which of these events occurs at rapid heart rates?

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 -ventricular depolarization

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

The semilunar valves are positioned between the atria and ventricles.

The condition in which the pericardial sac becomes distended with excess fluid to the point that it impinges upon cardiac filling is known as ____________________.

The amount of blood pumped out of the heart during each beat is known as the cardiac output.

What happens during isovolumetric ventricular contraction?

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 the normal direction of the impulse through the conduction system of the heart for each cardiac cycle?

Match the factor involved in the initiation and spread of cardiac excitation, labelled d. with the description. (Options may be used more than once or not at all.)a. through a.SA node b.AV node c.bundle of His and Purkinje system d.gap junction -the normal pacemaker of the heart

Which of these statements correctly describes the systemic circulation?

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

The AV valve controls the amount of blood entering the atrium from the venous system.

An increase in parasympathetic activity ____________________ the heart rate.

The refractory period in cardiac muscle is much shorter than the refractory period in skeletal muscle to ensure that the heart can quickly be restimulated to produce alternate periods of contraction and relaxation.

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 "gurgling" murmur

Which of these events happens when the heart is sympathetically stimulated?

Match the ions, labelled a. through c., with the events being described. (Options may be used more than once or not at all.) a.K+ b.Na+ c.Ca2+ -Changes in cytosolic _____ concentration bring about changes in the strength of cardiac contraction.

Which of these events occurs at rapid heart rates?

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 -ventricular depolarization

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

The semilunar valves are positioned between the atria and ventricles.

The condition in which the pericardial sac becomes distended with excess fluid to the point that it impinges upon cardiac filling is known as ____________________.

The amount of blood pumped out of the heart during each beat is known as the cardiac output.

What happens during isovolumetric ventricular contraction?

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 ions, labelled a. through c., with the events being described. (Options may be used more than once or not at all.) a.K⁺ b.Na⁺ c.Ca²⁺ -Changes in cytosolic _____ concentration bring about changes in the strength of cardiac contraction.

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