Digestion and Excretion Quiz

The main function (job) of the digestive system is to 

• get rid of waste.
• break down food so the body can use it.

The excretory system is responsible for

• breaking down food.
• getting rid of liquid, solid, and gas waste.

The digestive juices are made up of

• vitamins and minerals.
• enzymes and hydrochloric acid.

Where does the first step of digestion take place?

• in the stomach.
• in the mouth.

Waste leaves the body from

• the skin, the urethra, the lungs, and the anus.
• the rectum and the bladder.

A bolus is what we call food after

• it leaves the stomach.
• it is chewed and swallowed.

Chyme is the soupy, mostly digested food that leaves

• the stomach.
• the mouth.

The finger-like projections that absorb nutrients in the small intestine are called

• alveoli.
• villi.

Two additional organs play a role in digesting our food. They are: 

• pancreas, liver
• thyroid, spleen

Chewing is called

• mastication.
• digestion.