Blood pressure, Biology

Assignment Help:

An adequate level of pressure is needed in the arteries to keep the blood flowing through the cardiovascular system. The chief determinant of arterial pressure is the volume of blood in the arteries and the important determinants of this are the cardiac output and the peripheral vascular resistance. The resistance offered by the arterioles accounts for almost half the total resistance in the systemic circulation. The muscle in the arterial wall allows them to constrict or dilate. When they constrict, the resistance increases and the blood pressure increases. The vasomotor centre in the medulla when stimulated sends impulses via  the sympathetic to the smooth muscle in the arteries, arterioles and veins which results in their constriction.


Related Discussions:- Blood pressure

What is the process of evolution, Why acquired traits are not directly rela...

Why acquired traits are not directly related to the process of evolution? As acquired traits are not genetically determined, they cannot be passed on to offspring. Therefore,

How is the ovulation date estimated, How is the ovulation date estimated wi...

How is the ovulation date estimated with the control of the woman's body temperature? One method to estimate the exact ovulation day is daily control of the body temperature ta

Define phospholipids, a) Lipoproteins are large molecular compounds that a...

a) Lipoproteins are large molecular compounds that are essential to the transport of cholesterol and triglycerides (TGs) within the blood. They contain a lipid core composed of TG

Define uses isolated soybean proteins, Define uses isolated soybean protein...

Define uses isolated soybean proteins? Partially hydrolysed soy proteins possess good foam stabilization properties and can be used as whipping agents in combination with egg a

Microtubules, MICROTUBULES Discovered by De Robertis and Franchi ...

MICROTUBULES Discovered by De Robertis and Franchi . Term given by Slautterback . These are hollow structures, consists of tubulin protein. Each protein diamer

What is yellow fever, What is yellow fever? Yellow fever is a viral inf...

What is yellow fever? Yellow fever is a viral infection that happens mainly in Central Africa and in the Amazon region of South America. It is prevented through vaccination and

Explain the appearance of a single e. coli colony, Describe the appearance ...

Describe the appearance of a single E. coli colony. Why can it be considered genetically homogenous?

Morphological changes, Morphological changes Regressive changes -Thes...

Morphological changes Regressive changes -These changes include the gradual reduction and ultimate disappearance of all those larval structures or organs that become redundan

Explain restrictive cardiomyopathy, Q. Explain Restrictive cardiomyopathy? ...

Q. Explain Restrictive cardiomyopathy? It is a systemic or idiopathic disorder of the myocardium with clinical and hemodynamic features of diastolic dysfunction, closely simula

Inhibition of microorganisms in food, Q. Inhibition of microorganisms in fo...

Q. Inhibition of microorganisms in food? Microorganisms use our food supply as a source of nutrients and energy. They increase their numbers by utilizing nutrients. This can re

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd