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

Disorders associated with copulation and ejaculation, Disorders associated ...

Disorders associated with copulation and ejaculation Lack of libido refers to too long “reaction time” to complete absence of sexual desire for females in standing heat. The i

Suppose that the substance does not ionize, Percent solutions are made on t...

Percent solutions are made on the basis of g/ml or ml/ml of diluent, and it is usually assumed that 1 ml of water = 1 g of water. For example, 20 g/100 ml of water or 200 g/1000 ml

What are the main structures of chloroplasts, What are the main structures ...

What are the main structures of chloroplasts? Chloroplasts are included by two membrane layers, the outer and the inner membranes. Inside the organelle the formative unit is kn

Cleft palate, Cleft Palate   Well you have now learnt about the cleft l...

Cleft Palate   Well you have now learnt about the cleft lip and now let us discuss and understand what is cleft palate. Cleft palate (CP) is midline fissure of  the palate that

What action is epa taking on plant-incorporated protectants, What action is...

What action is EPA taking on plant-incorporated protectants? EPA has issued three final rules clarifying and formalizing EPA's framework for federal oversight of plant-incorpor

Define influence of gardening on the development of botany, Define Influenc...

Define Influence of Gardening on the Development of Botany? The influence of gardening on the development of botany may be seen in the work of John Gerard (1545-1612). Gerard p

Determine about the scales developed by golden, Determine about the scales ...

Determine about the scales developed by golden Several other scales have been developed by Golden and various collaborators, all of which are based on different ways of scoring

What are cnidocytes, What are cnidocytes? What is the name of the capsule i...

What are cnidocytes? What is the name of the capsule inside the cnidocyte? What are the biological functions of this structure? Cnidocytes are specialized cells present in coel

Zoonoses disease-yabapox, Yabapox Yabapox is a disease affecting mangabeys...

Yabapox Yabapox is a disease affecting mangabeys, rhesus, cynos, vervets, stumptails, and patas monkeys. It is caused by the Yaba-like disease virus (YLDV) and Yaba monkey tumor v

What is the prevention of perinatal transmission, Prevention of perinatal t...

Prevention of perinatal transmission  Zidovudine alone, started at 14-34 weeks of gestation and continued in the infant for the first 6 weeks of life, reduced HIV transmission

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