Respiratory, Digestive, Excretory Key Vocabulary

Front

Digestion

Back

The process by which the body breaks down food into small nutrient molecules.

Front

Diffusion

Back

The movement of particles from an area of high concentration to an area of low concentration.

Front

Emphysema

Back

A chronic respiratory disease where the air sacs (alveoli) in the lungs are damaged.

Front

Respiratory System

Back

The system in the body responsible for taking in oxygen and getting rid of carbon dioxide.

Front

Excretory System

Back

The system in the body responsible for removing cellular waste from the body.

Front

Absorption

Back

The process by which nutrients from digested food are taken into the body.

Front

Alveoli

Back

Tiny air sacs in the lungs where gas exchange occurs.

Front

Small Intestine

Back

The part of the digestive system where most of the digestion and absorption of food takes place.

Front

Peristalsis

Back

The series of wave-like muscle contractions that moves food through the digestive tract.

Front

Gas Exchange

Back

The process of swapping one gas for another, especially in the alveoli where oxygen is exchanged for carbon dioxide.