Cardiovascular System Pt1 Flashcards

The inferior vena cava delivers deoxygenated blood from lower body regions to the right atrium.
Deoxygenated blood from the inferior vena cava includes contributions from the legs, abdomen, and pelvis.
The superior vena cava also empties into the right atrium, bringing blood from the upper body.

The tricuspid valve is located between the right atrium and right ventricle, preventing backflow of blood.
During pulmonary circulation, blood flows from the right ventricle to the lungs through the pulmonary artery.
The pulmonary artery carries deoxygenated blood, contrary to the common belief that all arteries carry oxygen-rich blood.
The pulmonary vein transports oxygen-rich blood from the lungs to the left atrium.

In systemic circulation, blood exits the left ventricle and travels directly into the aorta, the body's largest artery.
The aorta branches into smaller arteries and subsequently to capillaries, facilitating nutrient and gas exchange.

The correct sequence of blood flow is: right atrium → right ventricle → lungs → left atrium → left ventricle → aorta.
Deoxygenated blood returns to the heart through the superior and inferior vena cava, entering the right atrium.

Atria are responsible for receiving returning blood - this is confirmed as true.
Both the left and right sides of the heart pump an equal volume of blood, confirmed as true.

Both the mitral (bicuspid) valve and the tricuspid valve are supported by chordae tendineae, which prevent improper valve opening.
Chordae tendineae anchor the papillary muscles to the valves, ensuring they close properly during ventricular contraction.

The aorta serves as a prime example of an elastic artery, characterized by a significant presence of collagen and elastin in its walls.
Elastic arteries allow for stretching with each heartbeat, helping to maintain blood pressure.

Capillary walls are specifically designed for efficient material exchange between blood and tissues.
The assertion that veins have the smallest lumen of all blood vessels is false; they actually have larger lumens compared to arteries.
The tunica intima is the innermost layer of blood vessels, contrary to the claim that it is the outermost layer.