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Klio2033 [76]
2 years ago
15

When blood first reaches the lungs it contains...

Biology
1 answer:
erma4kov [3.2K]2 years ago
8 0

Answer: I think C (I apologize if not)

Explanation: Oxygen and carbon dioxide travels to and from tiny air sacs in the lungs, through the walls of the capillaries, into the blood. Blood leaves the heart through the pulmonic valve, into the pulmonary artery, and to the lungs.

In the lungs, the blood refills its oxygen supply and gets rid of carbon dioxide. The oxygenated blood returns from the lungs to the left atrium through the pulmonary veins to the heart. The left ventricle then pumps this oxygen-rich blood throughout the body. Blood first enters the heart's right atrium. A muscle contraction forces the blood through the tricuspid valve into the right ventricle. When the right ventricle contracts, blood is forced through the pulmonary semilunar valve into the pulmonary artery. Then it travels to the lungs.

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ASHA 777 [7]

D

Explanation:

Flowing water has intrinsic kinetic energy that is harnessed to rotate the turbine. The turbine rotates hence gains mechanical energy because it is doing work. This work is used to rotate a dynamo of a generator which generates electricity. The mechanical energy is thus converted into electric energy by the dynamo. The electric energy is then carried by the power lines to the users.

7 0
3 years ago
Which system delivers oxygen and nutrients to all the cells of your body?
artcher [175]

Answer:

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6 0
2 years ago
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Why is a high use of renewable energy necessary to make hydrogen fuel an environmentally sound alternative?
Elan Coil [88]
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<span>Hydrogen can be made from electricity or petroleum. If made from petroleum it wouldn't be much different than gasoline because the rest of the petroleum would have to be used somewhere. If the hydrogen is made from electricity then the question again is where is the electricity being made. </span>

<span>Your question is also a good one because it highlights the "high use" of renewable energy. The production and use of hydrogen in less efficient than running just off of electricity. So you'd have to produce a whole lot more electricity to make hydrogen to drive a car a certain distance than to charge a battery-electric car and drive the same distanc</span>
5 0
3 years ago
A 45-year-old man with a history of paroxysmal atrial fibrillation presents to the ED with acute onset of severe pain and parest
marta [7]

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Explanation:

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mixas84 [53]
<span>monosomy 1 is bad because your missing a chromosome</span>
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