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.
</em>
- <em>Veins cannot be used to transport blood from the heart.
</em>
- <em>Failure to adequately transport waste to the heart does not apply in this case.</em>
Condoms
vaccines
controlled rooms of sick/affected people
Answer:
mineral are usually are rocks they come from meteorites that when land on earth they break up in small pieces forming small tiny hot pieces of rocks the speed very fast causing them to enter earth atmosphere our body technically use them in everything cause there are different type even in our food when we eat it but there are different types of minerals such as crystals there mineral to they just ones that form in caves but in every little thing there are minerals over the years they evolve and end up getting hard and forming into the rocks which is turning them into one.
Explanation:
The study of tissues and cells is called
A
