Which word refers to the expansion effect that occurs when the left ventricle contracts producing a wave of blood that surges through and expands the arterial walls?

Which word refers to the expansion effect that occurs when the left ventricle contracts producing a wave of blood that surges through and expands the arterial walls?

Pulse. After blood is ejected from the heart, elastic fibers in the arteries help maintain a high-pressure gradient as they expand to accommodate the blood, then recoil. This expansion and recoiling effect, known as the pulse, can be palpated manually or measured electronically.

Why does the left ventricle have a thicker wall than the right ventricle?

The left ventricle of your heart is larger and thicker than the right ventricle. This is because it has to pump the blood further around the body, and against higher pressure, compared with the right ventricle.

In which phase does ventricular ejection ventricular pressure rises and exceeds pressure in the arteries occur?

In the second phase of ventricular systole, the ventricular ejection phase, the contraction of the ventricular muscle has raised the pressure within the ventricle to the point that it is greater than the pressures in the pulmonary trunk and the aorta.

What happens when smooth muscles in the walls of the arteries are stimulated to contract?

We call this type of smooth muscle ‘vascular smooth muscle. ‘ When this type of muscle contracts and relaxes, the size of the lumen (the hole in the middle of a blood vessel) changes, allowing more or less blood to flow through the vessel. We have three types of muscle: skeletal, cardiac and smooth muscle.

Which blood vessels experience the sharpest decrease in blood pressure?

Which blood vessels experience the sharpest decrease in blood pressure? skeletal muscle pumps. You just studied 67 terms!

Where is the greatest volume of blood found in the body?

venous vasculature
Regarding the distribution of blood volume within the circulation, the greatest volume resides in the venous vasculature, where 70-80% of the blood volume is found. For this reason, veins are referred to as capacitance vessels.

Is your heart more left or right?

Your heart is in middle of your chest, in between your right and left lung. It is, however, tilted slightly to the left.

How do you account for the difference in muscle wall thickness between the two ventricles?

The ventricles of the heart have thicker muscular walls than the atria. This is because blood is pumped out of the heart at greater pressure from these chambers compared to the atria. The left ventricle also has a thicker muscular wall than the right ventricle, as seen in the adjacent image.

What are the 7 phases of cardiac cycle?

Phase 1 – Atrial Contraction. Phase 2 – Isovolumetric Contraction. Phase 3 – Rapid Ejection. Phase 4 – Reduced Ejection.

What is left ventricular pressure at the end of diastole?

Left ventricular end-diastolic pressure (LVEDP) is a reflection of ventricular compliance and intravascular volume and pressure; it relates both acutely and chronically to clinical conditions that affect ventricular performance.

Which of the following is a feature of atherosclerosis?

Atherosclerosis is the buildup of fats, cholesterol and other substances in and on your artery walls. This buildup is called plaque. The plaque can cause your arteries to narrow, blocking blood flow. The plaque can also burst, leading to a blood clot.

Which blood flow circuit has the greatest resistance?

Recall that we classified arterioles as resistance vessels, because given their small lumen, they dramatically slow the flow of blood from arteries. In fact, arterioles are the site of greatest resistance in the entire vascular network.