The second statement best explains the type of blood vessel and the function of these vessels' valves - <span>These are veins, which prevent the backflow of blood because the walls have little muscle to pump blood back to the heart.
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Veins are large blood vessels which carry blood back to the heart. <span>Veins have a system of valves to prevent back-flow.</span>
<span>John is loosing weight because his body is burning all of the carbs he has stored. After the initial burning of the stored carbs, Johns body will begin to burn stored fat. If and when he introduces carbs back into his diet, the weight is likely to return. There can be a negative of low carbs in the diet because carbs are the main energy source for the cells mitochondria (energy producers). It is not recommended to go on a very low carb diet. It is recommended that a well balanced diet be consumed for weight loss and maintenance.</span>
Answer:
Pancreatitis
Explanation:
There are many diseases related to a malfunctioning pancreas but pancreatitis is the most common.
The liver stores a multitude of substances, including glucose, vitamin A, vitamin D<span />, vitamin B12,vitamin K, iron, and copper.
The food must not curl when picked up
