Question 1

The difference between a person's maximum cardiac output and resting cardiac output is called the

Accepted Answer

A) stroke volume. 
B) peripheral resistance. 
C) afterload. 
D) cardiac reserve. 
E) venous return. 
A) stroke volume. 
B) peripheral resistance. 
C) afterload. 
D) cardiac reserve. 
E) venous return.

Question 2

In the diagram,which labeled structure is the pulmonary semilunar valve?

Accepted Answer

A) B 
B) D 
C) E 
D) A 
E) None of these choices 
A) B 
B) D 
C) E 
D) A 
E) None of these choices

Question 3

Which term refers to the period of time during a cardiac cycle when contraction of a chamber occurs and pressure within the chamber rises?

Accepted Answer

A) filling 
B) systole 
C) repolarization 
D) diastole 
E) fibrillation 
A) filling 
B) systole 
C) repolarization 
D) diastole 
E) fibrillation

Question 4

What labeled structure in the figure is the ligamentum arteriosum?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 5

Which of the following selections lists conditions that would lead to increased stroke volume?

Accepted Answer

A) increased preload,increased afterload,increased contractility 
B) decreased preload,decreased afterload,decreased contractility 
C) increased preload,decreased afterload,increased contractility 
D) decreased preload,increased afterload,increased contractility 
E) increased preload,increased afterload,decreased contractility 
A) increased preload,increased afterload,increased contractility 
B) decreased preload,decreased afterload,decreased contractility 
C) increased preload,decreased afterload,increased contractility 
D) decreased preload,increased afterload,increased contractility 
E) increased preload,increased afterload,decreased contractility

Question 6

Which of the labeled steps in the diagram represent formation of the endocardial tubes?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 7

Which part of the brain contains the cardiovascular center that regulates heart rate?

Accepted Answer

A) Midbrain 
B) Cerebrum 
C) Medulla oblongata 
D) Cerebellum 
E) Thalamus 
A) Midbrain 
B) Cerebrum 
C) Medulla oblongata 
D) Cerebellum 
E) Thalamus

Question 8

Define arrhythmia and discuss different categories of arrhythmias.

Accepted Answer

The term arrhythmia or dysrhythmia refer

Question 9

Stimulation of which nerve reduces heart rate?

Accepted Answer

A) Cardiac accelerator nerve 
B) Hypoglossal nerve 
C) Spinal accessory 
D) Vagus nerve 
E) Phrenic nerve 
A) Cardiac accelerator nerve 
B) Hypoglossal nerve 
C) Spinal accessory 
D) Vagus nerve 
E) Phrenic nerve

Question 10

Which of the labeled steps in the diagram represent formation of the primitive heart tube?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 11

Which of the labeled diagrams shows an atrial septal defect?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 12

Identify the muscular ridges that are found on the anterior wall of the right atrium and extend into the auricles.

Accepted Answer

A) Pectinate muscles 
B) Trabeculae carneae 
C) Coronary sulci 
D) Papillary muscles 
E) Chordae tendinae 
A) Pectinate muscles 
B) Trabeculae carneae 
C) Coronary sulci 
D) Papillary muscles 
E) Chordae tendinae

Question 13

Which of the following correctly lists the sequence of structures that a cardiac action potential follows in order to excite normal contraction of the heart?

Accepted Answer

A) Bundle of His,Purkinje fibers,Atrioventricular (AV)node 
B) Sinoatrial (S
A) node,Purkinje fibers,AV node,Bundle of His 
C) Purkinje fibers,AV node,SA node,Bundle of His 
D) SA node,AV node,Bundle of His,Purkinje fibers 
E) Bundle of His,SA node,AV node,Purkinje fibers 
A) Bundle of His,Purkinje fibers,Atrioventricular (AV)node 
B) Sinoatrial (S
A) node,Purkinje fibers,AV node,Bundle of His 
C) Purkinje fibers,AV node,SA node,Bundle of His 
D) SA node,AV node,Bundle of His,Purkinje fibers 
E) Bundle of His,SA node,AV node,Purkinje fibers

Question 14

Which valve below prevents blood from flowing back into the right ventricle?

Accepted Answer

A) Tricuspid valve 
B) Bicuspid valve 
C) Pulmonary semilunar valve 
D) Aortic semilunar valve 
E) Mitral valve 
A) Tricuspid valve 
B) Bicuspid valve 
C) Pulmonary semilunar valve 
D) Aortic semilunar valve 
E) Mitral valve

Question 15

Which network of specialized cardiac muscle fibers provide a path for each cycle of cardiac excitation to progress through the heart?

Accepted Answer

A) Systemic circuit 
B) Intercalated discs 
C) Cardiovascular center 
D) Cardiac conduction system 
E) Pulmonary circuit 
A) Systemic circuit 
B) Intercalated discs 
C) Cardiovascular center 
D) Cardiac conduction system 
E) Pulmonary circuit

Question 16

Which structure in the heart initiates action potentials that stimulate contraction of the heart at constant rate of about 100 beats per minute?

Accepted Answer

A) Cardiac accelerator nerves 
B) Atrioventricular node 
C) Cardiovascular center 
D) Sinoatrial node 
E) Bundle of His 
A) Cardiac accelerator nerves 
B) Atrioventricular node 
C) Cardiovascular center 
D) Sinoatrial node 
E) Bundle of His

Question 17

What of the following chambers of the heart contain deoxygenated blood?

Accepted Answer

A) Left atrium and left ventricle 
B) Left atrium only 
C) Right atrium and right ventricle 
D) Right ventricle only 
E) Left atrium and right ventricle 
A) Left atrium and left ventricle 
B) Left atrium only 
C) Right atrium and right ventricle 
D) Right ventricle only 
E) Left atrium and right ventricle

Question 18

Describe what is happening during the phase of the cardiac action potential labeled 2 in the diagram.

Accepted Answer

Phase 2 is the plateau phase which occur

Question 19

Which layer of the heart wall consists of cardiac muscle tissue?

Accepted Answer

A) Epicardium 
B) Pericardium 
C) Myocardium 
D) Endocardium 
E) Hypocardium 
A) Epicardium 
B) Pericardium 
C) Myocardium 
D) Endocardium 
E) Hypocardium

Question 20

During heart transplants,the _____ nerves are severed resulting in a faster resting heart rate (approximately 100 beats per minute)after the transplant.

Accepted Answer

A) glossopharyngeal 
B) cardiac accelerator 
C) vagus 
D) phrenic 
E) cervical spinal 
A) glossopharyngeal 
B) cardiac accelerator 
C) vagus 
D) phrenic 
E) cervical spinal

Exam 20: The Cardiovascular System: the Heart

The difference between a person's maximum cardiac output and resting cardiac output is called the

In the diagram,which labeled structure is the pulmonary semilunar valve?

Which term refers to the period of time during a cardiac cycle when contraction of a chamber occurs and pressure within the chamber rises?

What labeled structure in the figure is the ligamentum arteriosum?

Which of the following selections lists conditions that would lead to increased stroke volume?

Which of the labeled steps in the diagram represent formation of the endocardial tubes?

Which part of the brain contains the cardiovascular center that regulates heart rate?

Define arrhythmia and discuss different categories of arrhythmias.

Stimulation of which nerve reduces heart rate?

Which of the labeled steps in the diagram represent formation of the primitive heart tube?

Which of the labeled diagrams shows an atrial septal defect?

Identify the muscular ridges that are found on the anterior wall of the right atrium and extend into the auricles.

Which of the following correctly lists the sequence of structures that a cardiac action potential follows in order to excite normal contraction of the heart?

Which valve below prevents blood from flowing back into the right ventricle?

Which network of specialized cardiac muscle fibers provide a path for each cycle of cardiac excitation to progress through the heart?

Which structure in the heart initiates action potentials that stimulate contraction of the heart at constant rate of about 100 beats per minute?

What of the following chambers of the heart contain deoxygenated blood?

Describe what is happening during the phase of the cardiac action potential labeled 2 in the diagram.

Which layer of the heart wall consists of cardiac muscle tissue?

During heart transplants,the _____ nerves are severed resulting in a faster resting heart rate (approximately 100 beats per minute)after the transplant.

An Introduction to the Human Body

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System Unit Ii: Principles of Support and Movement

The Skeletal System: Bone Tissue

The Skeletal System: the Axial Skeleton

The Skeletal System: the Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System Unit Iii: Control Systems of the Human Body

Nervous Tissue

The Spinal Cord and Spinal Nerves

The Brain and Cranial Nerves

The Autonomic Nervous System

Sensory, Motor and Integrative Systems

The Special Senses

The Endocrine System Unit Iv: Maintenance of the Human Body

The Cardiovascular System: the Blood

The Cardiovascular System: Blood Vessels and Hemodynamics

The Lymphatic System, Nonspecific Resistance to Disease, and Immunity

The Respiratory System

The Digestive System

Metabolism

The Urinary System

Fluid, Electrolyte, and Acid-Base Homeostasis Unit V: Continuity

The Reproductive Systems

Development and Inheritance

Filters