Define carbohydrates. what function(s) do carbohydrates provide for your body? what happens if
you do not have enough or have too many carbohydrates?

Explanation:

Carbohydrates are degraded into sugar which, as a primary energy source, is required for the brain, muscles and other parts of the human body to function normally. when you don't get enough carbohydrates, the level of sugar in your blood may drop to below the normal range. (70-99mg/dL), causing hypoglycemia.

not enough carbohydrates: can result in a process called ketosis. Ketosis= not enough sugar(glucose) for energy, so body breaks down stored fat. ketones build up in your body.

too many carbohydrates: Ya get a big tummy.

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.