The body can make how many of the 20 amino acids it needs

Humans can produce 10 of the 20 amino acids. The others must be supplied in the food. Failure to obtain enough of even 1 of the 10 essential amino acids, those that we cannot make, results in degradation of the body's proteins—muscle and so forth—to obtain the one amino acid that is needed.

the aorta is the large artery leaving the heart branches into smaller arteries, which eventually branch into capillaries.the arteries carry oxygen and nutrients away from your heart, to your body's tissues. the capillaries are small, thin blood vessels that connect the arteries and the veins. the statement that arteries carry oxygen-rich blood to capillaries is true. veins on the other hand are blood vessels that take oxygen-poor blood back to the heart.

conditions such as oral thrush or oral herpes viruses can cause the tongue to swell due to inflammation. other medical conditions include tumorous cancer, acromegaly (giantism), amyloidosis, sarcoidosis, hypothyoidism, and kawasaki disease.

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