Respiratory System Vocabulary

Tiny air sacs in the lungs where gases are exchanged.

• alveoli

• bronchi

• bronchioles

• epiglotti

Two large tubes that branch off the trachea into the lungs

• bronchi

• bronchioles

• alveoli

• pharynx

Smallest branches of the bronchi

• bronchioles

• epiglotti

• alveoli

Pair of organs in the respiratory system where carbon dioxide and oxygen are exchanged

• alveoli

• lungs

• bronchi

• trachea

Organ system that takes oxygen into the body releases carbon dioxide and water

• respiratory system

• circulatory system

• excretory system

Chemical reaction where oxygen is used to generate energy for cells and carbon dioxide and water are released as waste.

• respiration

• photosynthesis

• breathing

Tags

NGSS.MS-LS2-3

Physical process of air moving in and out of the lungs

• respiration

• breathing

• photosynthesis

• digestion

Part of the respiratory system that branches into the bronchi; also known as the windpipe

• trachea

• esophagus

• pharynx

• bronchioles

Large domed muscle that separates chest and abdomen and plays a major role in breathing

• diaphraghm

• lungs

• alveoli

• trachea