Digestive System

Question 1

Functions of Digestive System

Answer 1

Mechanical and chemical breakdown of food and the absorption of nutrients
Excretion of waste

Question 2

Two types of bowel movements

Answer 2

Mixing Movements:
mix food with digestive juices

Propelling Movements:
called peristalsis; pushes food down the tube

Question 3

Mouth

Answer 3

begins digestion by chewing and mixing with saliva

Question 4

Tongue

Answer 4

moves food, connects to floor of mouth via frenulum

Question 5

Amylase

Answer 5

enzyme breaks down starch into sugars

Question 6

Esophagus

Answer 6

The muscular tube that carries food and liquids from your mouth to the stomach.

Question 7

Four regions of the stomach

Answer 7

The cardia (or cardiac region) is the point where the esophagus connects to the stomach and through which food passes into the stomach. 
Located inferior to the diaphragm, above and to the left of the cardia, is the dome-shaped fundus. 
Below the fundus is the body, the main part of the stomach. 
The funnel-shaped pylorus connects the stomach to the duodenum. The wider end of the funnel, the pyloric antrum, connects to the body of the stomach.

Question 8

Pyloric canal

Answer 8

The narrower end is called the pyloric canal, which connects to the duodenum.

Question 9

Pyloric sphincter

Answer 9

The smooth muscle pyloric sphincter is located at this latter point of connection and controls stomach emptying.

Question 10

Stomach lining

Answer 10

Mucus prevents stomach from digesting itself, small openings called gastric pits contain glands
Glands secrete gastric juices to breakdown food

Question 11

Pepsin

Answer 11

most important digestive enzyme for breaking down food