Define vasoconstriction and vasodilation.

Q: Define the term vasodilation?

A: Vasodilation is the process of widening of blood vessels. It results from relaxation of smooth…

Q: List and briefly explain the 3 factors that affect SV: preload, contractility and afterload

A: Stroke volume of the heart is defined as the amount of the blood pumped out by the left ventricle in…

Q: During strenuous exercise, blood flow will redistribute primarily to the       Liver

A: When a person starts  strenous exercising, the cardiovascular system undergoes few changes to meet…

Q: Explain control of vasoconstriction and vasodilation.

A: The circulatory system is the endless system of tubes that pumps blood to tissues and organs of the…

Q: Draw a flow diagram illustrating the reflex compensation for hemorrhage

A: During acute blood loss, the blood volume gets reduced and results in decreased central venous…

Q: Define each of the three variables, and describe the factors that influence each variable and how…

A: Heart is the most important organ of the circulatory system. It is a muscular organ that pumps the…

Q: match whter the following will cause vasodilation or vasoconstriction low oxygen  angiostensin ii

A: The widening of the blood vessel is known as vasodilation while the vasoconstriction is the opposite…

Q: Explain how muscular activity and venous valves aid venous return.

A: The skeletal muscle contractions will compress the venous vessels and forcing the blood centrally…

Q: Name a mechanism other than chemical factors that contributes toflow autoregulation?

A: The first event during the process of active hyperemia is the increased on metabolic activity of the…

Q: How do the vasomotor center coordinates both vasoconstriction and vasodilation?

A: Blood pressure can be defined as the force of the  blood  that pushes against the walls of our…

Q: What are the major physiological factors influencing capillary blood flow? What are the major…

A: Blood flow and its pressure is influenced by four key factors: cardiac output, blood volume,…

Q: How does vasoconstriction in the skin and viscera resultin increased venous return to the heart?

A: The constriction of the blood vessels is known as vasoconstriction. It leads to the increased blood…

Q: Describe the processes that regulate arterial pressure in the short- and long-term mechanisms

A: Introduction: The cells, tissues, organs, and organ system are interlinked and live together in a…

Q: Describe the compensatory mechanisms that act to raise blood volume during cardiovascular shock.

A: A medical condition where the dysfunctioning of the heart's ventricles or insufficient blood pumping…

Q: Define afterload, and describe its effect on the pumpingeffectiveness of the heart

A: The heart is the muscular organ that is protected by the ribs in the body's thoracic cavity. It…

Q: Diagram the control of autonomic outflow during exercise?

A: Exercise included reduction in cardiac parasympathetic activity and increase in sympathetic activity…

Q: Define circulatory shock. What are some of the causes of low venous return shock?

A: The lack of blood affects the organs and cells of the body. This is because they do not receive the…

Q: Which vessels have the slowest velocity of flow?  Why is this functionally important?

A: There are three kinds of blood vessels: arteries, veins, and capillaries, each playing a role in the…

Q: flow

A: Organs are groups of tissues that perform the same job. The brain, heart, kidneys, liver, and lungs…

Q: Which determinant of resistance is varied physiologically to alterblood flow?

A: To answer this question we should have knowledge of Physiology.

Q: Why would blocking the action of a vasoconstriction lower blood pressure?

A: Circulatory system is a type of body system in which circulation of body fluids occur and…

Q: Explain the concept of Vasoconstriction and vasodilatation and the impact that preload and afterload…

A: The circulatory system consists of three systems that work together; the heart (cardiovascular),…

Q: With regard to local blood flow regulation, which of these substances will produce vasoconstriction?

A: The objective of the question is to identify the substances that can cause vasoconstriction, which…

Q: Define cardiac output and given numerical values compute the cardiac output

A: Cardiac output is a term which describes the amount of blood being pumped by the heart through the…

Q: 9. Regular exercise helps remove buildup of plaque on artery walls by increasing blood flow through…

A: Answer- A. Decreased blood pressure due to reduced resistance.

Q: Explain how vasodilator substances, O2, and nutrients areinvolved with local control of blood flow

A: The circulatory system is one of our body's major organ systems that helps circulate blood from and…

Q: how do vasodilation and vasoconstriction help the body to regulate circulation dynamics?

A: Vasoconstriction and vasodilation are collectively termed as vasomotion. The narrowing of the blood…

Q: Explain the main steps and consequence of the baroreceptor-induced response  when systemic…

A: The baroreceptor-induced response is a reflex action that occurs when systemic vasoconstriction…

Q: What is the vasa vasorum? What is its function?

A: The human body's blood vessels are a closed system of tubes that transport blood to all parts of the…

Q: Blood flow distribution changes significantly with exertion. Where does blood flow primarily…

A: Blood is referred to as the body fluid of organisms that is principally responsible for carrying out…

Q: Describe the role of blood volume in the long term regulation of arterial pressure.

A: Introduction: Blood volume is determined by the amount of water and sodium consumed, excreted in…

Q: List common factors that cause vasodilation and vasoconstriction.

A: Widening of arteries and large blood vessels to increase blood flow and increased oxygen supply to…