BYU CELL 220 Exam 3 – Cardiovascular, Respiratory & Digestive Systems Review

BYU Cell 220 Exam 3 NEWEST 2025 COMPLETE
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The base of the heart is comprised of the... - CORRECT ANSWER- Posterior and superior
surfaces of the heart



The apex points to the... - CORRECT ANSWER- Left Hip



The apex is comprised of the... - CORRECT ANSWER- Anterior and inferior surfaces of the heart



The pericardium is made up of ___ layers - CORRECT ANSWER- Three



The outermost layer of the pericardium is the... - CORRECT ANSWER- Fibrous Pericardium



Just deep to the fibrous pericardium is the... - CORRECT ANSWER- Parietal layer of the Serous
Pericardium



What is found between the two layers of the serous pericardium? - CORRECT ANSWER- The
Pericardial Cavity

,The Pericardial Cavity contains... - CORRECT ANSWER- Serous fluid

The average cardiac output of the heart is... - CORRECT ANSWER- 5.25 Liters per minute



The heart beats about ___ times per minute - CORRECT ANSWER- 75



The heart functions as a dual pump for which two circuits? - CORRECT ANSWER- Pulmonary
and Systemic



Where is the heart located? - CORRECT ANSWER- Within the Mediastinum. On the diaphragm.
Posterior to the Sternum.



The deepest layer of the pericardium is the... - CORRECT ANSWER- Visceral layer of the Serous
Pericardium



What are the functions of the pericardium? - CORRECT ANSWER- Prevent undesired
movement and overfilling of the heart. Reduces friction.



The heart wall is made up of ___ layers - CORRECT ANSWER- Three



Which layer of the heart wall is the most superficial? - CORRECT ANSWER- The Epicardium



The Epicardium is made up of which type of skin cells? - CORRECT ANSWER- Simple squamous
epithelium

,The Epicardium is also known as the... - CORRECT ANSWER- Visceral layer of the Serous
Pericardium



The middle layer of the heart wall is the... - CORRECT ANSWER- Myocardium



Which layer of the heart wall is the bulkiest? - CORRECT ANSWER- The Myocardium



The Myocardium is made of which type of muscle? - CORRECT ANSWER- Cardiac



The deepest layer of the heart wall is the... - CORRECT ANSWER- Endocardium



The endocardium is also known as the... - CORRECT ANSWER- Endothelium



The Endocardium is made up of which type of cell? - CORRECT ANSWER- Simple squamous
epithelium



What is the function of the pulmonary circuit? - CORRECT ANSWER- Carry blood to and from
the lungs



What part of the heart is the pump for the pulmonary circuit? - CORRECT ANSWER- The right
ventricle



What is the function of the systemic circuit? - CORRECT ANSWER- Transport blood to and from
the body tissues

, What part of the heart is the pump for the systemic circuit? - CORRECT ANSWER- The left
ventricle



The atriums of the heart are located _____ to the ventricles of the heart - CORRECT ANSWER-
Superior



What is the pattern of blood flow through the heart? - CORRECT ANSWER- 1. Superior/Inferior
Vena Cava. 2. Right Atrium 3. Right Ventricle 4. Pulmonary trunk 5. Pulmonary artery 6. Lungs 7.
Pulmonary vein 8. Left Atrium 9. Left Ventricle 10. Aorta



What is the function of the right atrium? - CORRECT ANSWER- A receiving chamber for oxygen
poor blood from the systemic circuit



The Fossa ovalis is known as what during fetal circulation? - CORRECT ANSWER- Foramen ovale



What is the function of the right ventricle? - CORRECT ANSWER- Eject oxygen poor blood into
the pulmonary trunk.



When papillary muscles of the heart anchor what? - CORRECT ANSWER- The chordae
tendineae



What is the function of the chordae tendineae? - CORRECT ANSWER- Prevent the valves from
everting



The left atrium is located on the... - CORRECT ANSWER- Posterior surface of the heart