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Klio2033 [76]
3 years ago
15

When blood first reaches the lungs it contains...

Biology
1 answer:
erma4kov [3.2K]3 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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A disease whose primary symptom is blood in the urine​
Klio2033 [76]

Answer:

Urinary tract infections.

For some people, especially older adults, the only sign of illness might be microscopic blood in the urine. Kidney infections (pyelonephritis). These can occur when bacteria enter your kidneys from your bloodstream or move from your ureters to your kidney(s)

8 0
3 years ago
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Pacemakers maintain the heartbeat in people who suffer from certain defects. The function of an artificial pacemaker is to send
Inessa [10]

slow heart rhythm (bradycardia)

Explanation:

when a persons heart beat is not normal is typically let's say 60-100 beats per minute that means the blood is not pumped properly throughout the body. so the pacemaker works as an heart machine to keep your heart beating.

6 0
3 years ago
The shape and mechanical properties of plant, yeast, and bacteria cells is established by a
satela [25.4K]

Answer:

(d) Cell wall

Explanation:

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4 0
4 years ago
Based on the pyramid, which organism(s) provide the MOST available energy?
charle [14.2K]
Your answer is D

The triangle shows the main provider of food and energy, and then everything that feeds off of that, main provider is always at the bottom. and up from there is everything that survives off of it.
6 0
3 years ago
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Which statement is not connect for a convex mirror? (a) Image distance is always positive. (b) The object distance is with negat
likoan [24]

Answer:

option (d) is incorrect

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according to sign convention, length on the right side it is positive.

4 0
3 years ago
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