Digestive System Quiz

What is the function of peristalsis?

• to move food through the digestive system

• to remove excess liquid from the body

• to chemically digest food to release nutrients

• to absorb nutrients into the blood

When does the first step of digestion usually occur?

• when the organism discovers the food

• when the food is chewed

• when the food is swallowed

• when the nutrients are absorbed

Food enters the human body through the ______.

• esophagus

• mouth

• intestine

• liver

Tags

NGSS.MS-LS1-7

Digestion begins in the mouth with chewing and ________________ beginning to break down food.

What is the correct sequence of events in the human digestive system?

• A) Ingestion, Absorption, Digestion, Excretion

• B) Digestion, Ingestion, Absorption, Excretion

• C) Ingestion, Digestion, Absorption, Excretion

• D) Absorption, Digestion, Ingestion, Excretion

Why is it necessary to have both mechanical and chemical digestion?

Absorption in the small intestines occurs through the walls of fingerlike projections called _______________.

Which organ is primarily responsible for nutrient absorption?

• large intestine

• small intestine

• stomach

• pancreas

What role does saliva play in digestion?

• It neutralizes stomach acid.

• It breaks down proteins.

• It absorbs nutrients.

• It moistens food and begins carbohydrate digestion.

What are the primary functions of the excretory system?

• Producing energy and storing nutrients.

• Cleans the blood and gets rid of waste.

• Carries oxygen to the body.

• Breaks down food into nutrients.