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

Determine the axon of a nerve cell, In the axon of a nerve cell, A. the...

In the axon of a nerve cell, A. the voltage-dependent conductance of the voltage-gated potassium channel has a faster time course than the voltage-dependent conductance of the

Aquatic and terrestrial plant, what is common between aquatic and terrestri...

what is common between aquatic and terrestrial plants

Calculate the width of the implant, Width of the Implant The width of t...

Width of the Implant The width of the implant especially at the interface area is critical towards the success of the implant. It has been recommended that at least 1mm of bone

Define fluids required for underweight - nutritional care, Define Fluids re...

Define Fluids required for underweight - nutritional care? Take fluids only after a meal instead of with or before meals so that food intake is not reduced. High calorie nouris

Define interaction of vitamin k with calcium, Define interaction of vitamin...

Define interaction of vitamin k with Calcium? Since vitamin D functions have an impact on calcium metabolism, an inter-relationship exists between vitamin IS-dependent proteins

Constituents of cell walls in bacteria, Q. What are the main respective con...

Q. What are the main respective constituents of cell walls in bacteria, protists, fungi and plants? In bacteria the cell wall is made of peptidoglycans, amongst protists algae

What are the final energetic products of each krebs cycle, What are the fin...

What are the final energetic products of each round of the Krebs cycle? Where is most part of the utile energy at the end of Krebs cycle found? After each round of the Krebs cy

Explain the storage of vitamin e, Explain the Storage of Vitamin E? Vi...

Explain the Storage of Vitamin E? Vitamin E is mainly stored in muscles and adipose tissue. Vitamin E content of erythrocytes is about 20 percent of that in plasma and there i

Zoology , canal system in porifera

canal system in porifera

Hepatitis, He p atitis Hepatitis is defined as degenerative/ inflamma...

He p atitis Hepatitis is defined as degenerative/ inflammatory processes of the liver. The clinical manifestations associated with hepatic dysfunctions results from impairmen

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