A&P Study Guide
Digestive System
1. The human body relies completely on the to meets its nutritional
needs.
2. After food and drink are ingested, the digestive system breaks them down into their component
nutrients and absorb them so that the can transport them to
other cells to use for ,, and .
3. The digestive system is thought of in two parts: the (also called
alimentary tract or gastrointestinal tract) and the
.
4. The is the pathway in which food is ingested, digested, absorbed, and
excreted. It is composed of the ,,,
,and ,, and
.
5. , or wave-like contractions of smooth muscle, moves food and waste through
the digestive tract.
6. The accessory digestive organs are the ,,
, and .
7. The mouth is where the and digestion of food begins.
The food is chewed mechanically by the and shaped into a by the
so that it can be more easily swallowed by the esophagus.
8. is secreted from the salivary glands, the largest of which are the
.
9. The salivary glands also secrete , an enzyme that begins chemical digestion and
breakdown of the carbohydrates and sugars in food.
10. Food moves through the and down the muscular to the
stomach.
