Answer: Trust me, It's a good answer that comes with an explanation:
As the sympathetic nervous system engages, your kidneys release two chemicals, adrenaline and noradrenaline. These chemicals initiate a sequence of events within your body that prepare you either to flee quickly from danger or to stay and fight in a way that causes as little harm to yourself as possible.
Answer:
cleaning parks
volunteering with the local homeless shelter
working a soup kitchen
Explanation:
Answer:
Varicose veins can best be described as veins cannot prevent the backflow of blood.
Explanation:
Varicose veins are a manifestation of venous insufficiency or peripheral vascular insufficiency.
Veins are blood vessels that, unlike arteries, are not able to contract, so they depend on gravity, muscle contractions and a system of valves to be able to carry blood to the heart.
<u>When the venous valves do not work, the blood is not transported properly, backflow occurs and is retained, producing dilation of the vein walls, which is characteristic of varicose veins</u>. In this case, veins cannot prevent the backflow of blood.
The other options are not correct because:
- <em>Varicose veins do not lose their ability to transport blood.
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- <em>Veins cannot be used to transport blood from the heart.
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- <em>Failure to adequately transport waste to the heart does not apply in this case.</em>
