BSC2089C Human Anatomy and Physiology II Module 02 quiz 2022

• 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