Digestive System

Question 1

mouth

Answer 1

starts the process of breaking down food (ingest)
2 ways:
mechanical: teeth and tongue
chemical: enzymes (saliva)
swallows food

Question 2

esophagus

Answer 2

muscular tube connecting mouth to stomach

smooth muscle tissue, contracts (rhythmic muscle-PERISTALSIS) to slowly move the food along

Question 3

stomach

Answer 3

holds food and churns it to continue the process of digestion (mixes with enzymes and acids)
richly supplied with nerves that signals when full or hungry

Question 4

small intestine

Answer 4

6m long
where most digestion happens
Goblet cells release mucus, and nutrients diffuses through the wall and enters bloodstream

Question 5

large intestine (colon)

Answer 5

1.5m long
lining absorbs water from the indigestible food
remaining solid matter excreted from anus

Question 6

liver

Answer 6

produces a fluid called bile, which helps the breakdown of fats in our food

Question 7

pancreas

Answer 7

produces many digestive enzymes that secretes into small intestine. enzymes break down fats, proteins and carbohydrates
produces insulin that helps regulate the concentration of glucose in the blood

Question 8

gall bladder

Answer 8

stores and concentrates bile, secreted into small intestine

Question 9

rectum

Answer 9

temporarily stores waste (feces)

Question 10

anus

Answer 10

lining of the upper anus detects rectal contents
indicates whether contents are liquid, solids, gas
egestion

Question 11

functions of the digestive system

Answer 11

1. ingestion
2. digestion
3. absorption
4. egestion

Question 12

main parts of the digestive system

Answer 12

1. digestive tract

2. accessory organs