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nignag [31]
3 years ago
5

Describe the systemic circuit. (Module 19.1B) Describe the systemic circuit. (Module 19.1B) The systemic circuit transports bloo

d from the right ventricle through the pulmonary arteries, capillaries in the lungs, and pulmonary veins and returns it to the left atrium. The systemic circuit transports blood through the arteries, capillaries, and veins of the body from the left ventricle to the right atrium. The systemic circuit consists of the vasculature in the heart. The systemic circuit transports blood from the left ventricle through the pulmonary arteries, capillaries in the lungs, and pulmonary veins and returns it to the right atrium. The systemic circuit transports blood from the left ventricle through the pulmonary veins, capillaries in the lungs, and pulmonary arteries and returns it to the right atrium.
Biology
1 answer:
maksim [4K]3 years ago
7 0

Systemic circuit is defined as one of the two circuit of circulation that occurs in human body.

<h3><u>Explanation</u>:</h3>

The circulatory system is divided into two phases in the human body. They are:

A. Pulmonary circulation

B. Systemic circulation.

The pulmonary circulation is the short circuit of circulation that starts from the right ventricle, goes to lungs via pulmonary artery and returns to left auricle via pulmonary vein.

The systemic circulation is the bigger circuit that starts from the left ventricle, goes to each and every organ of the body via aorta, and returns to the right auricle via venacava.

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Answer:

B) Nitrogen-fixing bacteria and lightning

Explanation:

Nitrogen cycle is the natural process in which atmospheric nitrogen is converted into nitrite and nitrate with the help of bacteria.

Nitrogen cycle is directly dependent on nitrogen-fixing bacteria and lightning.

As bacteria are responsible for most of the chemical conversion in the nitrogen cycle such as nitrogen fixation (first step) is done by soil bacteria (Cyanobacteria) that form ammonia, which is toxic to plants; nitrification in which ammonia is converted into nitrites and nitrates with the help of Nitrobacter and denitrification bacteria involve Pseudomonas, and Achromobacter which convert nitrite and nitrate into nitrogen.

The lightning breaks nitrogen molecules and allow  it to combine with oxygen in atmosphere which further dissolve in rain and form nitrates.

Hence, the nitrogen cycle is most directly dependent upon nitrogen-fixing bacteria and lightning and the correct option is B.

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Answer:

Option-B, C and E

Explanation:

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