Question 1

The outermost layer of the pericardial sac is the ____.&#8203;&#10;A) &#8203;visceral pericardium&#10;B) &#8203;serous pericardium&#10;C) &#8203;myocardium&#10;D) &#8203;fibrous pericardium

Accepted Answer

The outermost layer of the pericardial sac is called the fibrous pericardium. It is a tough, fibrous sac that helps protect the heart from injury and anchors it in place within the chest cavity. The visceral and serous pericardium are layers inside the fibrous pericardium. The myocardium is the muscular layer of the heart itself.

Question 2

Blood flow from the lower portions of the body return to the heart via the ____ vena cava.&#8203;&#10;A) &#8203;anterior&#10;B) &#8203;medial&#10;C) &#8203;inferior&#10;D) &#8203;lateral

Accepted Answer

The inferior vena cava is the major vein that returns blood from the lower portions of the body (including the legs, pelvis, and abdomen) to the heart.

Question 3

The coronary arteries supply blood to the ____.&#8203;&#10;A) &#8203;heart&#10;B) &#8203;lungs&#10;C) &#8203;kidneys&#10;D) &#8203;liver

Accepted Answer

The coronary arteries supply blood to the heart.

Question 4

The bundle of ____ distributes the electrical charge over the medial surfaces of the ventricles.&#8203;&#10;A) &#8203;His&#10;B) &#8203;Purkinje&#10;C) &#8203;sinoatrium&#10;D) &#8203;myoatrium

Accepted Answer

The bundle of His is responsible for distributing the electrical charge over the medial surfaces of the ventricles.

Question 5

The atrioventricular node is known as the pacemaker.&#8203;

Accepted Answer

The sinoatrial (SA) node is known as the pacemaker of the heart, as it sets the pace for the heart's contractions. While the atrioventricular (AV) node helps to transmit the electrical signal from the SA node to the ventricles, it is not responsible for setting the heart rate.

Question 6

Cords called the chordae ____ connect the pointed ends of the cusps of the AV valves to the papillary muscles.&#8203;&#10;A) &#8203;ligaments&#10;B) &#8203;tendineae&#10;C) &#8203;muscles&#10;D) &#8203;ligamentum

Accepted Answer

The cords connecting the cusps of AV valves to papillary muscles are called chordae tendineae. This helps in keeping the valve cusps in their proper position during the contraction and relaxation of the heart.

Question 7

The second layer of the wall of the heart, the ____, makes up the bulk of the heart.&#8203;&#10;A) &#8203;epicardium&#10;B) &#8203;myocardium&#10;C) &#8203;endocardium&#10;D) &#8203;pericardium

Accepted Answer

The myocardium is the middle layer of the heart wall and is responsible for the contraction of the heart. It is composed of cardiac muscle cells and makes up the bulk of the heart. Options A, C, and D refer to other layers of the heart wall, but do not make up the bulk of the heart.

Question 8

The groove that separates the atria from the ventricles is called the coronary ____.&#8203;&#10;A) &#8203;gyrus&#10;B) &#8203;trabecula&#10;C) &#8203;sulcus&#10;D) &#8203;pectinati

Accepted Answer

The groove that separates the atria from the ventricles is called the coronary sulcus. Option A (gyrus) refers to a fold on the surface of the brain. Option B (trabecula) refers to a small, thin, branching structure. Option D (pectinati) refers to a ridge-like structure found in the atria.

Question 9

The ____ circulation is the blood circulatory route that supplies the myocardium of the heart.&#8203;&#10;A) &#8203;cerebral&#10;B) &#8203;coronary&#10;C) &#8203;pulmonary&#10;D) &#8203;renal

Accepted Answer

The coronary circulation supplies the myocardium (heart muscle) of the heart with oxygenated blood. The cerebral circulation supplies blood to the brain, the pulmonary circulation supplies blood between the heart and lungs, and the renal circulation supplies blood to the kidneys.

Question 10

The outermost layer of the pericardial sac is the serous pericardium&#8203;

Accepted Answer

The outermost layer of the pericardial sac is the fibrous pericardium, while the serous pericardium is a thinner, double-layered structure inside the fibrous pericardium.

Question 11

The ____ circulation supplies the brain with oxygen and nutrients and disposes of waste.&#8203;&#10;A) &#8203;cerebral&#10;B) &#8203;coronary&#10;C) &#8203;pulmonary&#10;D) &#8203;renal

Accepted Answer

The answer of The ____ circulation supplies the brain with...

Question 12

The irregular ridges and folds of the ventricles are called the ____.&#8203;&#10;A) &#8203;trabeculae carneae&#10;B) &#8203;auricles&#10;C) &#8203;sulci&#10;D) &#8203;gyri

Accepted Answer

The answer of The irregular ridges and folds of the...

Question 13

The tunica ____ of arteries and veins is composed of a single layer of endothelial cells.&#8203;&#10;A) &#8203;media&#10;B) &#8203;adventitia&#10;C) &#8203;myomedia&#10;D) &#8203;intima

Accepted Answer

The answer of The tunica ____ of arteries and veins...

Question 14

The ____ vena cava brings blood from the upper parts of the body, the head, neck, and arms to the heart.&#8203;&#10;A) &#8203;inferior&#10;B) &#8203;medial&#10;C) &#8203;lateral&#10;D) &#8203;superior

Accepted Answer

The answer of The ____ vena cava brings blood from...

Question 15

The atrioventricular valve between the left atrium and the left ventricle is known as the ____ valve.&#8203;&#10;A) &#8203;tricuspid&#10;B) &#8203;bicuspid&#10;C) &#8203;pulmonary&#10;D) &#8203;aortic

Accepted Answer

The answer of The atrioventricular valve between the left atrium...

Question 16

Systole is the term used to refer to the phase of relaxation.&#8203;

Accepted Answer

The answer of Systole is the term used to refer...

Question 17

The pulmonary semilunar valve is found in the right ventricle.&#8203;

Accepted Answer

The answer of The pulmonary semilunar valve is found in...

Question 18

Oxygenated blood returns to the heart from the lungs via four pulmonary ____.&#8203;&#10;A) &#8203;arteries&#10;B) &#8203;arterioles&#10;C) &#8203;veins&#10;D) &#8203;venules

Accepted Answer

The answer of Oxygenated blood returns to the heart from...

Question 19

The outermost layer of the wall of the heart is the ____.&#8203;&#10;A) &#8203;serous pericardium&#10;B) &#8203;epicardium&#10;C) &#8203;endocardium&#10;D) &#8203;myocardium

Accepted Answer

The answer of The outermost layer of the wall of...

Question 20

The left ventricle has walls that are thicker than the right ventricle.&#8203;

Accepted Answer

The answer of The left ventricle has walls that are...

Question 21

A ____ is an abnormal heart sound akin to a fluttering or a humming sound.&#8203;&#10;A) &#8203;stenosis&#10;B) &#8203;thrombosis&#10;C) &#8203;pectoris&#10;D) &#8203;murmur

Accepted Answer

The answer of A ____ is an abnormal heart sound...

Question 22

The heart beats about ____________________ times per minute.&#8203;

Accepted Answer

The answer of The heart beats about ____________________ times per...

Question 23

A narrowed opening through the valves of the heart is called a(n) ____.&#8203;&#10;A) &#8203;infarct&#10;B) &#8203;stenosis&#10;C) &#8203;embolus&#10;D) &#8203;thrombus

Accepted Answer

The answer of A narrowed opening through the valves of...

Question 24

The presence of ____ keeps blood from backflowing in the heart.&#8203;&#10;A) &#8203;atria&#10;B) &#8203;ventricles&#10;C) &#8203;valves&#10;D) &#8203;septa

Accepted Answer

The answer of The presence of ____ keeps blood from...

Question 25

Heart disease present at birth is known as ____________________ heart disease.&#8203;

Accepted Answer

The answer of Heart disease present at birth is known...

Question 26

The mitral valve is also called the ____.&#8203;&#10;A) &#8203;bicuspid&#10;B) &#8203;tricuspid&#10;C) &#8203;aortic semilunar&#10;D) &#8203;pulmonary semilunar

Accepted Answer

The answer of The mitral valve is also called the...

Question 27

The right and left renal arteries supply blood to the ____.&#8203;&#10;A) &#8203;kidneys&#10;B) &#8203;stomach&#10;C) &#8203;bladder&#10;D) &#8203;heart

Accepted Answer

The answer of The right and left renal arteries supply...

Question 28

The ____ arteries supply muscles of the thorax.&#8203;&#10;A) &#8203;coronary&#10;B) &#8203;renal&#10;C) &#8203;gonadal&#10;D) &#8203;intercostal

Accepted Answer

The answer of The ____ arteries supply muscles of the...

Question 29

Any deviation from a normal heartbeat rhythm is called ____.&#8203;&#10;A) &#8203;arrhythmia&#10;B) &#8203;stenosis&#10;C) &#8203;infarction&#10;D) &#8203;thrombosis

Accepted Answer

The answer of Any deviation from a normal heartbeat rhythm...

Question 30

Microscopic vessels composed of simple squamous epithelial cells are called ____.&#8203;&#10;A) &#8203;venules&#10;B) &#8203;capillaries&#10;C) &#8203;arterioles&#10;D) &#8203;lumens

Accepted Answer

The answer of Microscopic vessels composed of simple squamous epithelial...

Question 31

The heart is situated in the ____ surrounded by the pericardial sac.&#8203;&#10;A) &#8203;peritoneum&#10;B) &#8203;mediastinum&#10;C) &#8203;pleura&#10;D) &#8203;myocardium

Accepted Answer

The answer of The heart is situated in the ____...

Question 32

Capillaries are connected to veins by ____.&#8203;&#10;A) &#8203;venules&#10;B) &#8203;bronchioles&#10;C) &#8203;arterioles&#10;D) &#8203;lymphatics

Accepted Answer

The answer of Capillaries are connected to veins by ____.&#8203;&#10;A)...

Question 33

The heart is innervated by the ____________________ nervous system.&#8203;

Accepted Answer

The answer of The heart is innervated by the ____________________...

Question 34

The ____________________ is the largest artery in the body.&#8203;

Accepted Answer

The answer of The ____________________ is the largest artery in...

Question 35

A disease of the arteries in which cholesterol-containing masses accumulate on the inside of arterial walls is called ____________________.&#8203;

Accepted Answer

The answer of A disease of the arteries in which...

Question 36

The ____ portal vein drains the organs of the digestive tract and then continues to the liver.&#8203;&#10;A) &#8203;hepatic&#10;B) &#8203;renal&#10;C) &#8203;urinary&#10;D) &#8203;saphenous

Accepted Answer

The answer of The ____ portal vein drains the organs...

Question 37

The reconstruction of a diseased coronary artery by inserting a small balloon through the aorta and into a coronary artery is a procedure known as ____.&#8203;&#10;A) &#8203;atherosclerosis&#10;B) &#8203;stenosis&#10;C) &#8203;anastomosis&#10;D) &#8203;angioplasty

Accepted Answer

The answer of The reconstruction of a diseased coronary artery...

Question 38

An average cardiac cycle takes ____ seconds.&#8203;&#10;A) &#8203;2&#10;B) &#8203;0.8&#10;C) &#8203;0.2&#10;D) &#8203;8

Accepted Answer

The answer of An average cardiac cycle takes ____ seconds.&#8203;&#10;A)...

Question 39

Inadequate blood flow can cause an ____, an area of damaged cardiac tissue.&#10;A) &#8203;intercostal&#10;B) &#8203;anastomoses&#10;C) &#8203;infarct&#10;D) &#8203;embolus

Accepted Answer

The answer of Inadequate blood flow can cause an ____,...

Question 40

The hollow core of a blood vessel is called the ____.&#8203;&#10;A) &#8203;anastomosis&#10;B) &#8203;endocardium&#10;C) &#8203;lumen&#10;D) &#8203;tunic

Accepted Answer

The answer of The hollow core of a blood vessel...

Question 41

Matching&#10;Match the description with the corresponding term.&#8203;&#10;a.&#8203;SA node&#10;b.&#8203;Purkinje's fibers&#10;c.&#8203;systole&#10;d.&#8203;capillaries&#10;e.&#8203;myocardium&#10;f.&#8203;diastole&#10;g.&#8203;ventricle&#10;h.&#8203;artery&#10;i.&#8203;tunica media&#10;j.anastomosis&#10;&#8203;muscular layer of blood vessels

Accepted Answer