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ddd [48]
3 years ago
9

What is the purpose of the coronary artery and what results if there is blockage in this vessel ? cousrse hero?

Biology
1 answer:
tresset_1 [31]3 years ago
7 0
Coronary arteries supply blood to the heart muscle, The left one, arises from the aorta and feeds blood to the left side of the heart and the right one supplies blood to the right ventricle, the right atrium, and the SA (sinoatrial) and AV (atrioventricular) nodes, which regulate the heart rhythm. Blockage in this vessel result in <span>reducing the flow of oxygen and nutrients to the heart muscle and that can lead to a heart attack. Atherosclerosis and arteriosclerosis are the most common causes of heart disease.</span>
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The nitrogen cycle is most directly dependent upon-
vovangra [49]

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.

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5 0
3 years ago
The technique psychologists use to measure electrical activity in the brain is 1. EEG 2. Lesion 3. FMri 4. CAT Scan 5. PET Scan
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Answer:

The correct answer is 1. EEG.

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