RESPIRATORY SYSTEM

what is the smallest respiratory passageways in the lungs?

• alveoli

• bronchioles

• diaphragm

• trachea

The main muscle involved in inhalation

• lungs

• heart

• diaphragm

• chest

Gas exchange takes place in the

• pharynx

• larynx

• alveoli

• trachea

Small air sacs in the lungs where many capillaries exchange carbon dioxide for oxygen taken into the body

• bronchi

• alveoli

• trachea

• pharynx

The windpipe

• larynx

• adenoid

• trachea

• bronchi

A large muscle that separates the chest cavity from the abdominal cavity and helps with breathing

• diaphragm

• trachea

• larynx

• alveoli

What is the name of the protective layer around the lungs?

• pleura

• cilia

• capillaries

• bronhioles

Both air and food pass through this

• pharynx

• larynx

• trachea

• bronchi

These carry air into the lungs.

• bronchi and bronchiole tubes

• alveoli

• sinuses

• heart

What is the waste product you breathe out?