Explain the concept of Vasoconstriction and vasodilatation and the impact that preload and afterload has on them.

Q: Define the term vasodilation?

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

Q: Briefly describe the short term regulation of blood pressure and relate the failure of these…

A: Short-term regulation of blood pressure is controlled by the autonomic nervous system. Blood…

Q: What is a pressure gradient? Where are the pressure gradients present in the vasculature? Give…

A: Introduction: The heart is a hollow muscular organ that pumps blood through the circulatory system…

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: 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: Define the term vasoconstriction?

A: Blood vessels including arteries, capillaries, and veins can constrict and dilate to facilitate body…

Q: How does vasoconstriction help increase the coretemperature of the body?

A: The body tightly regulates the body temperature through a process called thermoregulation, in which…

Q: Describe the mechanisms that produce vasodilation in exercising muscles, and list the cardiovascular…

A: Vasodilation refers to increased blood vessel area; it occurs principally because of relaxation…

Q: Why is monotheraphy in the management of hypertension is not effective?

A: ▪︎Monotherapy means medical treatment given using single drug or therapy . ▪︎We can have many…

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: 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: Distinguish between the effects of vasodilation andvasoconstriction on blood flow

A: Vasodilation Vasoconstriction Dilation of blood vessels near the skin. Constriction of blood…

Q: Explain the role of aldosterone and ADH in long-term restoration of blood volume.

A: Hormones are chemical messengers which are secreted by endocrine glands and transported through the…

Q: Discuss in details vasoconstriction.

A: Blood vessels are channels through which blood is distributed to the body tissues and cells. Blood…

Q: what are the most important factors affecting arterial blood pressure? specify the short-term…

A: Blood pressure is the force that blood exerts against blood vessel walls as a result of the heart's…

Q: Explain why orthostatic (postural) hypotension may occurwith vasodilator drugs.

A: The blood is pumped from the heart to all parts of the body through the aorta. As the blood is…

Q: Describe the effects of the angiotensin II, vasopressin, and atrial natriuretic peptide(ANP) on…

A: MAP, or mean arterial pressure, is defined as the average pressure in arteries during one cardiac…

Q: Define vasoconstriction

A: The cardiovascular system is a vital body organ system that concerns the transport of blood along…

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: Define vasoconstriction and vasodilation.

A: The circulatory system's components that transport blood throughout the human body are known as…

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: neural, humoral, and renal mechanisms for short-term and long-term regulation of blood pressure

A: The regulation of blood pressure is a complex process that involves multiple systems that work…

Q: List and describe the 3 mechanisms that assist venous return.

A: The supply of blood returning to the heart is Venous Return (VR). As averaged over time, venous…

Q: Would you expect this count to be decreased or elevated in a vaso-occlusive crisis?

A: In Vaso occlusive crisis the RBC Becomes sickel shaped so it causes obstruction in the blood supply…

Q: Explain how the Starling forces regulate bulk flow in the capillaries using the core concept of…

A: Starling forces regulate bulk flow in the capillaries using the core concept of flow-down-gradients.

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…

Q: Describe how colloidosmotic  pressure affects the transcapillary  fluid balance

A: Oncotic pressure, or colloid osmotic-pressure, is a type of osmotic pressure prompted by the…

Q: Which valves are closed during isovolumetric contraction & isovolumetric relaxation of the…

A: The Human heart is the Center for regulating blood across the body. It is located within the…

Q: Describe the role of endothelial paracrine agents in mediating arteriolar vasoconstriction and…

A: Introduction: The human body is made up of cells that group together to create tissues, tissues that…

Q: Define and why vasodilator drugs are of limited value in arterial disease?

A: Arteries are the vessels that carry oxygen-rich blood away from the heart to the tissues of the…

Q: Predict the effect of each of the following conditions on blood flow:(a) vasoconstriction of blood…

A: The movement of blood across different areas of body take place through the blood. In order to…

Q: Describe the actions of vasodilators and vasoconstrictors.

A: The temperature inside the body needs to be steady as well as maintained carefully. So do the blood…