<u>Saliva:</u> the liquid in your mouth that lubricates food and begins to digest it.
<u>Esophagus:</u> a muscular tube which transports food from the pharynx to the stomach.
<u>Bowels:</u> the small and the large intestine.
<u>Chyme:</u> partly digested food that is passed from the stomach to the small intestine.
<u>Abdomen:</u> the cavity in your body located between the bottom of the rib cage and the hips.
<u>Digestion:</u> the process by which food is converted into a form that can be used by cells.
<u>Bladder:</u> a hollow, muscular organ at the bottom of the abdomen that holds and discharges urine.
<u>Urine:</u> a liquid filtered from the blood by the kidneys and discharged from the body as waste.
<u>Villi:</u> hair-like parts of the small intestine that absorb nutrients from food.
<h3>What is digestion?</h3>
Digestion can be defined as a form of catabolic activity that involves the breaking down of food into smaller sizes that can be absorbed as nutrients by the body of a living organism while releasing energy through the process.
Based on the digestive system, the body parts which are used for the digestion of a food in the human body include the following:
The DRI (Dietary Reference Intake) is 0.8 grams of protein per kilogram of body weight, or 0.36 grams per pound. This amounts to: 56 grams per day for the average sedentary man. 46 grams per day for the average sedentary woman