Question 1

Cardiac tamponade may develop following a case of

Accepted Answer

A) myocarditis 
B) endocarditis 
C) palpitation 
D) pericarditis 
E) tachycardia 
A) myocarditis 
B) endocarditis 
C) palpitation 
D) pericarditis 
E) tachycardia

Question 2

Which labeled structure in the figure is the AV node?

Accepted Answer

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

Question 3

Trauma to the pericardium associated with bleeding into the pericardial cavity,might cause

Accepted Answer

A) myocarditis 
B) endocarditis 
C) cardiac tamponade 
D) rapid heart rate 
E) none of these 
A) myocarditis 
B) endocarditis 
C) cardiac tamponade 
D) rapid heart rate 
E) none of these

Question 4

An increase in the carbon dioxide levels in the blood leads to a change in the chemical composition of the blood.This input would be received by which part of the brain 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 5

Which of the following blood vessels is used to distribute oxygenated blood to the myocardium?

Accepted Answer

A) Coronary artery 
B) Coronary vein 
C) Coronary sinus 
D) Vena cava 
E) Myocardial vein 
A) Coronary artery 
B) Coronary vein 
C) Coronary sinus 
D) Vena cava 
E) Myocardial vein

Question 6

Which labeled structure in the figure carries the cardiac action potential directly into the contractile fibers of the ventricular myocardium?

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 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 8

What is the relationship between an individual who is exercising strenuously causing his or her heart rate to exceed 160 beats/minute and the Frank-Starling law of the heart?

Accepted Answer

The Frank-Starling law of the heart stat

Question 9

What type of tissue comprises the valves of the heart?

Accepted Answer

A) Dense connective tissue 
B) Areolar connective tissue 
C) Hyaline cartilage 
D) Cardiac muscle tissue 
E) Adipose tissue 
A) Dense connective tissue 
B) Areolar connective tissue 
C) Hyaline cartilage 
D) Cardiac muscle tissue 
E) Adipose tissue

Question 10

Which phases of a heartbeat shown in the diagram involve depolarization of any of the heart's four chambers?

Accepted Answer

A) 1 and 3 
B) 2 and 4 
C) 4 and 6 
D) 1,3,and 5 
E) 1 and 5 
A) 1 and 3 
B) 2 and 4 
C) 4 and 6 
D) 1,3,and 5 
E) 1 and 5

Question 11

Define arrhythmia and discuss different categories of arrhythmias.

Accepted Answer

The term arrhythmia or dysrhythmia refer

Question 12

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 13

Which labeled structure in the figure acts as the natural pacemaker of the heart?

Accepted Answer

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

Question 14

Which of the labeled steps in the diagram represents 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 15

Blood leaving the left ventricle passes through which of the following structures?

Accepted Answer

A) Right atrium 
B) Interventricular septum 
C) Bicuspid valve 
D) Aortic semilunar valve 
E) Pulmonary semilunar valve 
A) Right atrium 
B) Interventricular septum 
C) Bicuspid valve 
D) Aortic semilunar valve 
E) Pulmonary semilunar valve

Question 16

Which labeled structure in the figure represents the only pathway for conducting action potentials from the atria to the ventricles?

Accepted Answer

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

Question 17

Cardiac muscle fibers are electrically connected to neighboring fibers by

Accepted Answer

A) desmosomes. 
B) tight junctions. 
C) gap junctions. 
D) interneurons. 
E) chordae tendinae. 
A) desmosomes. 
B) tight junctions. 
C) gap junctions. 
D) interneurons. 
E) chordae tendinae.

Question 18

Briefly describe why cardiac tissue cannot repair itself after damage?

Accepted Answer

Cardiac muscle lacks

Question 19

Positive inotropic agents often promote inflow of which cation to increase contractility of the heart?

Accepted Answer

A) sodium 
B) potassium 
C) magnesium 
D) phosphorus 
E) calcium 
A) sodium 
B) potassium 
C) magnesium 
D) phosphorus 
E) calcium

Question 20

The period of atrial systole lasts about [dropdown 1] while the period of ventricular systole lasts approximately [dropdown 2].
Dropdown 1 Choices:
0.4 second
0.3 second
0.1 second
0.6 second
Dropdown 2 Choices:
0.4 second
0.3 second
0.1 second
0.6 second

Accepted Answer

1.0.1 seco

Exam 20: The Cardiovascular System: the Heart

Cardiac tamponade may develop following a case of

Which labeled structure in the figure is the AV node?

Trauma to the pericardium associated with bleeding into the pericardial cavity,might cause

An increase in the carbon dioxide levels in the blood leads to a change in the chemical composition of the blood.This input would be received by which part of the brain that regulates heart rate?

Which of the following blood vessels is used to distribute oxygenated blood to the myocardium?

Which labeled structure in the figure carries the cardiac action potential directly into the contractile fibers of the ventricular myocardium?

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

What is the relationship between an individual who is exercising strenuously causing his or her heart rate to exceed 160 beats/minute and the Frank-Starling law of the heart?

What type of tissue comprises the valves of the heart?

Which phases of a heartbeat shown in the diagram involve depolarization of any of the heart's four chambers?

Define arrhythmia and discuss different categories of arrhythmias.

Which of the labeled diagrams shows an atrial septal defect?

Which labeled structure in the figure acts as the natural pacemaker of the heart?

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

Blood leaving the left ventricle passes through which of the following structures?

Which labeled structure in the figure represents the only pathway for conducting action potentials from the atria to the ventricles?

Cardiac muscle fibers are electrically connected to neighboring fibers by

Briefly describe why cardiac tissue cannot repair itself after damage?

Positive inotropic agents often promote inflow of which cation to increase contractility of the heart?

The period of atrial systole lasts about [dropdown 1] while the period of ventricular systole lasts approximately [dropdown 2]. Dropdown 1 Choices: 0.4 second 0.3 second 0.1 second 0.6 second Dropdown 2 Choices: 0.4 second 0.3 second 0.1 second 0.6 second

An Introduction to the Human Body

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

The Skeletal System: Bone Tissue

The Skeletal System: the Axial Skeleton

The Skeletal System: The Appendicular Skeleton

Joints

Muscular Tissue

The Muscular System

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

The Cardiovascular System: the Blood

The Cardiovascular System: Blood Vessels and Hemodynamics

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Nutrition

The Urinary System

Fluid, Electrolyte, and Acidbase Homeostasis

The Reproductive Systems

Development and Inheritance

Filters