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The _____________ is responsible for the pulse wave in the systemic circuit.
a. right atrium
b. right ventricle
c. left atrium
d. left ventricle
Introduction:
In most animals, the heart is a muscular organ that draws blood of the circulatory system through the blood vessels. Blood gives oxygen and nutrients to the body, as well as helps in the removal of metabolic wastes. In humans, other mammals and birds, the heart is divided into 4 chambers: the upper left and right atria and the lower left and right ventricle.
Answer to Problem 1PL
Correct answer:
The correct answer is option (d) left ventricle.
Explanation of Solution
Explanation/justification for the correct answer:
Option (d) left ventricle. The left ventricle receives oxygen-rich (oxygenated) blood from the left atrium via the mitral valve and pumps it into the systemic circulation by the aorta via the aortic valve. So, this is the correct option.
Explanation for incorrect answer:
Option (a) right atrium. The right atrium collects oxygen-free (deoxygenated) blood from the body via the vena cava and is pumped into the right ventricle which subsequently sends it to the lungs for oxygen. So, this is an incorrect option.
Option (b) right ventricle. The right ventricle is the chamber of the heart that receives oxygen-free blood from the right atrium and pumps it into the lungs through the pulmonary artery under reduced pressure. So, this is an incorrect option.
Option (c) left atrium. It is located on the left posterior side. Their primary contributions are to perform as a chamber for blood returning from the lungs and as a pump for transporting blood to another area of the heart. So, this is an incorrect option.
The left ventricle is in charge for the pulse wave in the systemic circuit. Hence, the correct answer is option (d) left ventricle.
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Chapter 48 Solutions
Laboratory Manual For Human Anatomy & Physiology
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