Question 1

A vascular sinus, such as the coronary sinus, is best described as:

Accepted Answer

A)  a thin-walled vein that has no smooth muscle to alter its diameter. 
B)  a thin-walled artery that has no smooth muscle to alter its diameter. 
C)  a connection between blood vessels that allows for multiple routes of blood flow. 
D)  a blood-filled connective tissue.

Question 2

Because of differential growth of cells tube and confines of the pericardium, loops and folds form in which two regions in the primitive heart?

Accepted Answer

A)  sinus venosus and primitive atrium 
B)  primitive atrium and primitive ventricle 
C)  primitive ventricle and bulbus cordis 
D)  bulbus cordis and truncus arteriosus

Question 3

Regarding a myocardial infarction (MI), heart tissue distal to an arterial obstruction dies and is replaced by _____.

Accepted Answer

A)  contractile cardiac muscle tissue 
B)  noncontractile scar tissue 
C)  adipose tissue 
D)  None of these choices

Question 4

Discuss the most compelling reason for people to learn CPR.

Accepted Answer

The answer of Discuss the most compelling reason for people...

Question 5

Which of the following are branches of the left coronary artery? 
1) marginal branch
2) circumflex branch
3) anterior interventricular branch
4) posterior interventricular branch

Accepted Answer

A)  1, 2, 3 
B)  2, 4 
C)  1, 3 only 
D)  2, 3 only

Question 6

The anterior and posterior interventricular sulci are external features that mark the location of the _____ inside the heart.

Accepted Answer

The answer of The anterior and posterior interventricular sulci are...

Question 7

When auscultating heart sounds, S2 is caused by blood turbulence associated with closure of the _____ valves at the beginning of ventricular _____.

Accepted Answer

A)  AV; diastole 
B)  Semilunar; systole 
C)  AV; systole 
D)  Semilunar; diastole

Question 8

The heart cannot contract without signals from the autonomic nervous system.

Accepted Answer

A) True 
 B)False

Question 9

Surface projection refers to outlining the shape and location of an organ using landmarks on the surface of the organ body. Describe the surface projection of the heart.

Accepted Answer

The answer of Surface projection refers to outlining the shape...

Question 10

The _____ branch of the left coronary artery is located in the coronary sulcus.

Accepted Answer

The answer of The _____ branch of the left coronary...

Question 11

Match the ventricle of the heart with the description. Left ventricle:

Accepted Answer

A)  thicker myocardium 
B)  pumps a smaller volume of blood

Question 12

The _____ forms an external boundary between the superior atria and inferior ventricles.

Accepted Answer

A)  fossa ovalis 
B)  foramen ovale 
C)  coronary sulcus 
D)  interventricular sulcus

Question 13

Match the vessel with the description. Aorta:

Accepted Answer

A)  carries oxygenated blood away from the heart 
B)  carries deoxygenated blood away from the heart

Question 14

Partial obstruction of blood flow in the coronary arteries may cause myocardial infarction.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following is an example of an arrhythmia?

Accepted Answer

A)  bradycardia 
B)  tachycardia 
C)  fibrillation 
D)  All of these choices

Question 16

The atrio-ventricular (AV) valve in the left side of the heart is known as the:

Accepted Answer

A)  bicuspid (mitral) 
B)  pulmonary semilunar. 
C)  tricuspid. 
D)  aortic semilunar.

Question 17

There are four valves in the heart: 
1) bicuspid (mitral)
2) tricuspid
3) pulmonary semilunar
4) aortic semilunar
What is the correct order in which blood flows through these valves, starting in the right atrium?

Accepted Answer

A)  1, 4, 2, 3 
B)  1, 3, 2, 4 
C)  2, 3, 1, 4 
D)  2, 4, 1, 3

Question 18

Match the component of the conduction system of the heart with the description. Myocardium:

Accepted Answer

A)  thickest layer, muscular 
B)  found only in walls of ventricles

Question 19

Trace the path of a drop of blood from the time it enters the heart via the superior vena cava until it is in the arch of the aorta.

Accepted Answer

The answer of Trace the path of a drop of...

Question 20

Match the vessel with the description. Pulmonary trunk:

Accepted Answer

A)  carries deoxygenated blood away from the heart 
B)  carries deoxygenated blood toward the heart

Exam 13: The Cardiovascular System: the Heart