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Step2247 [10]
3 years ago
10

During ventricular systole (the ventricular ejection phase), what opens the semilunar valves?

Medicine
1 answer:
Bas_tet [7]3 years ago
4 0

Answer:

The semilunar valves open during the ejection phase due to the pressure on the left ventricle being higher than the pressure in the aorta and pulmonary artery.

Explanation:

During the ejection phase occurring in the ventricular systole, the pressure in the left ventricle increases and overpasses the pressure in the aorta and pulmonary artery. At this point the semilunar valves open, allowing the blood to flow from the ventricle into the arteries.  

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Fynjy0 [20]

In general, the richest sources of vitamin E are plant oils and is denoted as option C.

<h3>What is Vitamin E?</h3>

This is a type of fat soluble compound which acts as antioxidants and protect the body from free radicals.

Almost all the types of plant oils tested positive to the presence of Vitamin E which makes it the richest source of the vitamin.

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3 0
2 years ago
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navik [9.2K]

Answer:

The correct word to be fill in the blank is 'energy.'

Explanation:

Secondary active transport is a type of active transport, which involves transport of molecules or ions across the membrane against their concentration gradient by using energy.

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An example of secondary transport is transport of potassium ions by K+/H+ exchanger that transports hydrogen ions and potassium ions in opposite direction. It uses energy from proton motive force (generated by transport of hydrogen ions or protons) to transport potassium ions.

Thus, the correct answer is 'energy.'

5 0
3 years ago
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Lisa [10]

Answer:

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Oksanka [162]

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Explanation:

8 0
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