Air enters body through this

• pharynx
• nose
• trachea
• epiglottis

Tiny, hair-like projections that move together in sweeping motion

• ribcage
• trachea
• pharynx
• cilia

Tube-like passage way where food and liquid pass; contains the larynx

• cilia
• trachea
• pharynx
• bronchi

A tube held open by ring of cartilage; also called the windpipe

• cilia
• trachea
• nose
• bronchi

Small flap of tissue that folds over trachea to prevent food or liquid from entering

• epiglottis
• trachea
• nose
• bronchi

Passages that direct air into the lungs

• epiglottis
• bronchi
• nose
• bronchi

Tiny sacs of lung tissue specialized for the movement of gases between air and blood

• alveoli
• bronchi
• nose
• bronchi

Protects the lungs and is flexible so it can expand and contract

• ribcage
• trachea
• pharynx
• bronchi