What is true of the chordae tendineae?
Question 1
What is true of the chordae tendineae?
Prevent the aortic cusps from closing improperly
Prevent the AV cusps from closing improperly
Provide structural support to the ventricle walls
Assist in the contraction in the papillary muscles
Question 2
The contraction of the heart follows which sequence?
The right atrium, right ventricle, left atrium, then left ventricle
The right side of the heart contracts, then the left side contracts
The atria contract together, then the ventricles contract together
All four chambers contract at the same time.
Question 3
Which statement is true regarding cardiac tissue?
Like smooth tissue, it has a striated appearance under microscopic observation
It is found in endocardium of the heart
It contains intercalated discs that assist in structural support of heart muscle cell
It contains thick and thin filaments that are involved in the contraction process
Question 4
The pericardium of the heart provides an ability of the heart to contract in a frictionless surface and consists of one thick connective tissue layer.
T
True
F
False
Question 5
Which statement is true regarding the circuits of the body and the heart?
The atria receive blood from the body circuits, while the ventricles pump blood to the body circuits
The left side of the heart pumps blood to the pulmonary circuit
The right side of the heart receives blood from the systemic circuit
The right side of the heart is much thicker than the left side
Question 6
Which statement is true regarding the heart?
The myocardium primarily receives its blood flow from the coronary arteries and its branches
The epicardium is the inner layer of the heart that is very smooth and lines the chambers
All four valves within the heart contain cusps (leaflets) and chordae tendineae
The base of the heart is located inferior to the apex of the heart
Question 7
Which of the following statements is true regarding the pathway of blood through the heart?
From the left ventricle, blood is pumped into the pulmonary circuit
From the right atrium, blood passes mitral valve into the left ventricle
Blood returning to the heart from the lungs enters the left atrium
The left ventricle pumps deoxygenated blood out to the systemic circuit
Question 8
For the heart to contract effectively, the right side of the heart contracts while the left side of the heart fills with blood and then the left side contracts while the right side of the heart fills with blood.
T
True
F
False
Question 9
The cardiac conduction system allows for the heart to contract in a very coordinated mechanism that is dependent upon the AV node to generate the electrical impulse.
T
True
F
False
Question 10
Which of the following is true regarding the cardiac conduction system?
The bundle of His (atrioventricular bundle) innervates the left ventricle only
Ventricles contract first, then the atria
The intercalated discs of the muscle cells allow for the transmission of the electrical impulse generated by the SA node
The SA node is found in the left atrium
Question 11
Trabeculae carneae are commonly found in both the atria and ventricles.
T
True
F
False
Question 12
The normal heart resting rate is set by the SA node but the overall heart rate can be speed up due to influences by the sympathetic nervous system.
T
True
F
False
Question 13
Which statement is true regarding the heart?
The papillary muscles are attached to the chordae tendineae
The right atrium receives blood from the pulmonary circuit
The right AV valve is also referred to as the mitral valve
The pericardium is the inner layer of the heart that lines the heart chambers
Question 14
What statement is true regarding the cardiac conduction system?
The sinus rhythm is generated by the AV node
The Purkinje fibers are found in the interventricular septum
The electrical activity generated by the cardiac conduction system correlates to the electrocardiogram measurement
The cardiac conduction system generates the ability for the ventricles to contract then the atria
Question 15
The coronary arteries are branches off the pulmonary arteries that supply the heart the layers of the heart with blood.
T
True
F
False
Question 16
The base of the heart is located near the inferior aspect of the heart, while the apex is located superiorly.
T
True
F
False
Question 17
Blood entering the right atrium is deoxygenated.
T
True
F
False
Question 18
Blood entering the left atrium is deoxygenated.
T
True
F
False
Question 19
Which valve is located between the right atrium and right ventricle?
Pulmonary valve
Aortic valve
Mitral valve
Tricuspid valve
Question 20
The aortic valve prevents blood flowing back into the:
Right atrium
Right ventricle
Left atrium
Left ventricle
Question 21
The bicuspid valve prevents blood flowing back into the:
Right atrium
Right ventricle
Left atrium
Left ventricle
Question 22
Which of the following valves are classified as “semilunar” valves?
Mitral and aortic valves
Aortic and pulmonary valves
Pulmonary and tricuspid valves
Tricuspid and mitral valves
Question 23
Which of the following valves are classified as “atrioventricular” valves?
Mitral and aortic valves
Aortic and pulmonary valves
Pulmonary and tricuspid valves
Tricuspid and mitral valves
Question 24
Coronary arteries branch from the ____ and provide oxygenated blood to the cardiac cells.
Aorta
Pulmonary veins
Pulmonary arteries
Vena cava
Question 25
The AV node is known as the “pacemaker” of the heart and is responsible for initiating each heartbeat.
T
True
F
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