Explain systemic circulation in human biology, Biology

Assignment Help:

Explain Systemic Circulation in human biology?

In systemic circulation, oxygenated blood is pumped from the left atrium through the bicuspid valve, into the left ventricle, and from there throughout the body. Because the left ventricle is responsible for circulation to most of the body, it must exert a much greater force than the right ventricle, which pumps blood to only the lungs. Thus the muscular wall of the left ventricle is six times thicker than that of the right ventricle.

The left ventricle pumps the oxygenated blood through the aortic valve into the large blood vessel called the aorta. The aorta divides into many branch arteries: the carotid artery leading to the head, the coronary arteries that supply the heart, and other major arteries that feed all of the other organs of the body. This begins the circulation of oxygen-rich red blood cells through the body. Aortic valves and pulmonary valves are also called semilunar valves (from the Latin meaning "half-moon").

In the capillaries, oxygen diffuses from the blood into the surrounding cells, in exchange for carbon dioxide waste. The oxygen-depleted blood flows through the capillaries, which join to form venules, and finally veins, and into the collecting vessels known as the superior vena cava and the inferior vena cava before entering the right atrium of the heart.

 


Related Discussions:- Explain systemic circulation in human biology

Nutrition affecting the growth of microorganism, Q. Can Nutrition affecting...

Q. Can Nutrition affecting the growth of microorganism? Ans. Food is food to humans and microbes - be it carbohydrates, proteins or fats. The nutritional requirements of b

Neuroglia cells, NEUROGLI A CELLS (Rudolf Virchow, 1846) - Occurs i...

NEUROGLI A CELLS (Rudolf Virchow, 1846) - Occurs in the C.N.S. The cells are less than neurons. Neuroglia cells are of four types - (i) Oligodendrocytes - Occ

Why is the fish circulation classified as simple circulation, Why is the fi...

Why is the fish circulation classified as a simple and complete circulation? Complete circulation is that in which there is no mixture of venous blood and arterial blood. As ci

What is expression of the dominant phenotype, If we make a cross of two phe...

If we make a cross of two phenotypically WT zebrafish, and we get the following results, what can we say about the genotype of those two WT looking parents from the following resul

Polarity in regeneration, Polarity in Regeneration A distinct polarit...

Polarity in Regeneration A distinct polarity or gradient exists in planarians (and in other animals). The meaning of this is that in any piece or segment of the body; its ant

Explain the surgical management for obesity, Explain the Surgical Managemen...

Explain the Surgical Management for Obesity? Surgical procedures are generally restricted for the morbidly obese persons. If an individual has a BMI of 40 or higher, or a BMI o

Explain the working principle of spectrophotometer, Explain the Working Pri...

Explain the Working Principle of Spectrophotometer? The working principle of spectrophotometer is graphically presented in Figure. Figure: Working princip

Explain briefly pinocytosis , Unlike the phagocytosis, that is a regul...

Unlike the phagocytosis, that is a regulated form of endocytosis carried out by a small number of cell category, pinocytosis is a constitutive process which happens continuously in

What percentage of sons will show recessive phenotype, A woman who is heter...

A woman who is heterozygous for a particular X-linked recessive trait marries a phenotypically normal man. What percentage of their sons will show the recessive phenotype?

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