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>
It is true because heart attack is because of stopping of heart beats which will
Answer:
Cardiovascular fitness increases which of the following?
good cholesterol levels
Explanation:
Cardiovascular fitness increases good cholesterol levels, this occur when the heart is able to give blood that is highly rich in oxygen
Answer:
Fat has 9 calories and Carbs has 4
Explanation:
A single gram of fat will have about 9 calories while a gram of carbohydrate or protein will have about 4 calories. Fat is the nutrient thats more for energy storing.
