The vessel layer that has a direct role in vasoconstriction is the __________.   A tunica intima   B tunica externa   C tunica media

Q: applied to a piece of excised arteriole causes the vessel to relax, but an isolated piece of…

A: Endogenous substances that exhibit vascular activity are known as vasoactive substances. These…

Q: Define the term vasoconstriction?

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

Q: Describe the differences noticed in the structures of the arterial and venous walls. Mention each of…

A: Blood vessels are the components of the circulatory system, which are essential for transporting…

Q: Define perfusion. Why would it be significant if the cardiovascular system failed to maintain…

A: The circulatory framework, likewise called the cardiovascular framework or the vascular framework,…

Q: Vasodilation of blood vessels to the kidneys is due to________.a. more frequent action potentialsb.…

A: Kidney is an important organ of the body. It filters blood, removes waste, maintain body’s fluid…

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: Which of the following factors does not affect the blood pressure of an individual? age O family…

A: Introduction :- A systolic pressure of less than 120 and a diastolic pressure of less than 80 is…

Q: Which layer of the blood vessels is comprised of smooth muscle and plays a role in vasoconstriction…

A: There are three types of blood vessel in body which carries blood and supply oxygen, nutrients, and…

Q: Which of these is a vasoconstrictor? a. nitric oxide b. natriuretic hormone c. bradykinin d.…

A: Vasoconstriction is defined as the contraction or narrowing of the blood vessels usually large…

Q: If a vessel were to dilate to twice its previous radius, and if pressure remained constant, blood…

A: Introduction: According to the Frank-Starling law of the heart, the strength of the vascular…

Q: In a capillary bed if the hydrostatic pressure at the arteriole ends is 32 mm Hg and at the venule…

A: The interaction between the osmotic pressure and hydrostatic pressure is represented by NFP (net…

Q: Blood pressure can be significantly affected by (a) cardiac output (b) peripheral resistance (c)…

A: The wall of the arteries experiences a force that is exerted by the blood, this force is called…

Q: In veins the ______ than in capillaries.   A blood pressure is higher and flow velocity is slower…

A: The Blood vessels are the part of our vascular system that is responsible for transporting blood and…

Q: The velocity of blood flow decreases ifa. vessel radius increases.b. blood pressure increases.c.…

A: Blood flow is defined as the movement of blood through a blood vessels, organ or a tissue and it…

Q: can you please explain how to use this formula.  Mean Arterial Pressure(MAP)=CO x PR CO=SV x HR

A: The mean arterial pressure determines the average pressure at which blood through the arteries in…

Q: Plasma solutes enter the tissue fluid most neasily froma. continuous capillaries.b. fenestrated…

A: Answer is b.) fenestrated capillaries.

Q: What is the value of the blood flow’s Reynolds number in the capillaries? (i.e., while using the Re…

A: Reynolds number is used to predict the patterns of flow in various situations. Reynolds number…

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: The po2 in the superior vena Cava is approximately  a 40 mmHg b 46 mmHg c 100 mmHg

A: The amount of oxygen dissolved in the blood reflects the partial pressure of oxygen. It represents…

Q: During phase I, venous return occurs and blood enters relaxed atria. The pressure in the veins is…

A: Aorta carries oxygenated blood to different parts of body and pulmonary arteries carry deoxygenated…

Q: State the location and function of the aortic and cartoid baroreceptors and the aortic and carotoid…

A: The body can counteract short term as well as long term changes in the blood pressure. Short term…

Q: An increase in carbon dioxide would do which of the following in arterioles? cause vasoconstriction…

A: Breathing is a process in which oxygen is taken in and carbondioxide is exhaled out. During cellular…

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: Give some example of erythropoietic organs.

A: Blood is a fluid connective tissue that contains plasma and three types of blood corpuscles namely…

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 double circulation with the help of diagram.

A: The circulatory system circulates the body fluid throughout the body for the transport of gases,…

Q: Assuming a patient is presented with an 18% decrease in blood flow rate through a given portion of…

A: Blood flow self-regulation is a fantastic phenomenon that regulates blood supply and demand for…

Q: A drug applied to a piece of excised arteriole causes the vessel to relax, but an isolated piece of…

A: Arterioles are the blood vessels with the smallest diameter that extends and branches from the…

Q: During ventricular diastole, pressure in the ventricles falls to ____ mm Hg, while the pressure…

A: Blood pressure is the pressure of circulating blood against the walls of blood vessels. Blood…

Q: Would a ventricular septal defect cause: Choose one. Pulmonary edema due to vasoconstriction…

A: Ventricular septal defect is a heart defect because of hole in the wall between the heat lower…

Q: Assuming a patient is presented with an 18% decrease in blood flow rate(Q) through a given portion…

A: Blood is a connective tissue that consists of blood cells and the fluid medium that carries the cell…

Q: Differentiate between systolic and diastolic blood pressure, explaining the actions occurring during…

A: The pressure exerted by the blood on the walls of the arteries .Blood pressure is measured by two…

Q: Two pipes of equal diameter , but different lengths, are transporting blood. The shorter pipe is 10…

A: Poiseuille law. Volume flow rate = π X pressure difference X pipe radius 4 X liquid viscosity / 8…

Q: Anatomy: What layers are distiguish-able in the arterial wall?

A: The wall of artery and vein are composed of three layers.

Q: If the diameter of a blood vessel is reduced by two-thirds and the blood pressure remains constant…

A: Blood flow can be defined as the movement of blood via blood vessels in tissues and organs.…

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: The p0z in the superior vena cava is approximately: A. 40mmHg B. 46mmHg C. 100mmHg

A: Alveoli are the primary sites of exchange of gases. Exchange of gases also occur between blood and…

Q: Nervi vasorum control ________.a. vasoconstrictionb. vasodilationc. capillary permeabilityd. both…

A: Tunica adventitia refers to a loose and thinner connective tissue layer producing the outer covering…

Q: RN notes that the arterial waveform has changed, as seen below. What is causing this and how could…

A: The arterial waveform reflects the changes in pressure in the ventricles over time dP /dt , the…

Q: Low pH, if detected in the aortic arch, will cause the medulla oblongata to activate the

A: Sympathetic nervous system and parasympathetic nervous system are division of autonomic nervous…

Q: Which of the following statements is true?a. The longer the vessel, the lower the resistanceand the…

A: Blood is a fluid connective tissue that circulates all over the body delivering nutrients and oxygen…

Q: Slight vasodilation in an arteriole prompts a ________.a. slight increase in resistanceb. huge…

A: Vasodilation refers to the broadening of the blood vessels because of the relaxation of the smooth…

Q: Create an inforgraph about negative and postive feedback of mechanism of regulation of blood…

A: Change in the blood pressure in the body is continuously made to supply a sufficient amount of…

Q: were taking the blood pressure of a patient whose actual diast e was 16 kPa (approximately 120 mm…

A: Blood pressure : The force of circulating blood on the walls of the arteries . It is taken using two…

Q: A sudden increase in blood volume would result in which of the following physiological responses in…

A: Introduction The Pressure Of Circulating Blood Against The Walls Of Blood Arteries Is Known As Blood…

Q: Describe the relationship of the total cross-sectional area and velocity of blood flow.

A: The passage of blood through the vessels from the arteries to the capillaries and then into the…