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

Illustrate the factors of human skin, Skin The skin or integument is th...

Skin The skin or integument is the outer covering of the body and have appendages i.e. nails and hairs. The outer layer of skin is known as epidermis; the inner layer is dermis

Why that property of water is important to life, Choose one property of wat...

Choose one property of water and explain why that property is important to life.

Limitations of ecological pyramids, Limitations of Ecological Pyramids ...

Limitations of Ecological Pyramids The pyramid of energy is a significant improvement over the previous two types of ecological pyramids, yet all of them overlook one or anot

Explain about the vitamin a - fat soluble vitamins, Explain about the Vitam...

Explain about the Vitamin A? Vitamin A, one of the fat soluble vitamins, refers to a sub-group of retinoid that possess the biological activity of all-trans-retinol. The term '

Explain about steatorrhoea, Q. Explain about Steatorrhoea? Steatorrhoea...

Q. Explain about Steatorrhoea? Steatorrhoea is a symptom of the disorders of fat metabolism and malabsorption syndrome and can be defined as n condition of foul-smelling bulky

Why roots of many swamp plants have a special morphology, Why roots of many...

Why roots of many swamp plants have a special morphology? The Swamp and The marsh plants in general present supporting roots that ramify from portions of the stem above the gro

Types of neural networks, Types of Neural networks Neural networks can...

Types of Neural networks Neural networks can be grouped into: Sensory filter networks that are organised so as to pass on only certain features of a complex senso

What percentage of the offspring will be tall, Tall (T) plants are dominant...

Tall (T) plants are dominant and short (t) plants are recessive. Two heterozygous tall plants are crossed. What percentage of the offspring will be tall?

Explain spoilage by yeasts, Q. Explain Spoilage by yeasts? Yeasts domin...

Q. Explain Spoilage by yeasts? Yeasts dominate in the spoilage of fruit products which contain high acid content due to their ability to tolerate high acid environment. Yeast

Explain terms of osmosis, A red blood cell has an internal salt concentrati...

A red blood cell has an internal salt concentration of 150mM. The cell is placed in a beaker of 500mM salt. (a) Assuming that the cell membrane is permeable to water but not to

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