FAQ: Compared To An Artery, The Wall Of A Vein Differs In Which Of The Following Ways?

How does the wall of a vein differ when compared to an artery quizlet?

Because the walls of arteries are relatively thick and strong, they keep their circular shape when sectioned. In contrast, cut veins tend to collapse.

Which of the following is involved in anchoring the AV valve flaps to the walls of the ventricles?

The subvalvular apparatus includes the chordae tendineae and the papillary muscles. The AV valves are anchored to the wall of the ventricle by chordae tendineae (heartstrings), small tendons that prevent backflow by stopping the valve leaflets from inverting.

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How do the arteries of the pulmonary circulation differ structurally from the systemic arteries?

The pulmonary arteries have thin distensible walls with less elastic tissue than the systemic arteries. Thus, they have a blood pressure range of 15-30 mmHg systolic, and 4-12 mmHg diastolic. Structures seen on the medial views of the right and left lungs (29 structures).

Which of the following do does not ultimately drain into the inferior vena cava IVC )?


Front Back
Which of the following is/are not a vein(s) which ultimately drains into the inferior vena cava (IVC)? Basilic vein.
Heart muscle is also called _________. myocardium
The correct sequence of parts that function to carry cardiac impulses is: SA Node – AV Node – Atrioventricular bundle – Purkinje fibers.

What are 3 differences between arteries and veins?

One of the major differences between arteries and veins is that the arteries carry oxygenated blood to all body parts, whereas veins carry the deoxygenated blood to the heart with the exception of pulmonary arteries and veins.

What are 4 differences between arteries and veins?

Arteries carry blood (with oxygen) from your heart out to your body, while veins carry blood (without oxygen) from your body to your heart. Arteries carry oxygenated blood away from the heart to the body, and veins carry oxygen-poor blood back from the body to the heart.

What is the circulatory route that runs from the digestive tract to the liver called?

The hepatic portal system is the venous system that returns blood from the digestive tract and spleen to the liver (where raw nutrients in blood are processed before the blood returns to the heart).

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What is the correct pathway of blood within the heart?

Oxygen and carbon dioxide travels to and from tiny air sacs in the lungs, through the walls of the capillaries, into the blood. Blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs. Blood leaves the heart through the aortic valve, into the aorta and to the body.

What happens when Semilunar valves are open?

As the ventricles contract, ventricular pressure exceeds arterial pressure, the semilunar valves open and blood is pumped into the major arteries. However, when the ventricles relax, arterial pressure exceeds ventricular pressure and the semilunar valves snap shut.

Why are valves located in veins but not in arteries?

Unlike arteries, veins contain valves that ensure blood flows in only one direction. (Arteries don’t require valves because pressure from the heart is so strong that blood is only able to flow in one direction.) Valves also help blood travel back to the heart against the force of gravity.

What is the largest artery in the body?

Aorta Anatomy

The aorta is the large artery that carries oxygen-rich blood from the left ventricle of the heart to other parts of the body.

Why are walls of arteries thicker than veins?

Arteries and veins experience differences in the pressure of blood flow. Arteries experience a pressure wave as blood is pumped from the heart. This can be felt as a “pulse.” Because of this pressure the walls of arteries are much thicker than those of veins.

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Which blood vessels are direct branches of the left coronary artery?

The left anterior descending artery branches off the left coronary artery and supplies blood to the front of the left side of the heart. The circumflex artery branches off the left coronary artery and encircles the heart muscle. This artery supplies blood to the outer side and back of the heart.

Which vessel does not branch off of the aorta?

splenic artery. Which of the following paired arteries do NOT branch off the abdominal aorta? Which artery that branches from the common iliac artery enters the lower limb? Which blood vessel supplies blood to the large intestine, parts of the small intestine, and some abdominal organs?

What is it called when all valves are closed and ventricular pressure is increasing?

2) Receiving chamber pressure increases; more blood exits through AV valves. {atrial contraction} {mid-to-late diastole} 3) All valves are closed; ventricle pressure increases. {isovolumetric contraction phase} {systole}

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