Respiratory System

The air sacs that are covered with capillaries where gas exchange takes place

• bronchi
• lungs
• oxygen
• alveoli

The only externally visible part of the respiratory system

• Eyes

• Nose

• Pharynx

• Larynx

Which part of the Respiratory System plays a major role in speech? Also known as the voice box.

• nose

• pharynx

• larynx

• trachea

The two narrower tubes branching from the trachea that leads into the lungs

• nose

• bronchi

• lungs

• alveoli

The large muscle that contracts and relaxes and moves air in and out of the lungs.

• epiglottis

• alveoli

• diaphragm

• trachea

An air tube that is held open by C-shaped rings of cartilage. Also known as the windpipe.

• pharynx

• trachea

• nose

• alveoli

The air tubes in your lungs branch off into smaller, narrower tubes called

• bronchioles

• trachea

• larynx

• cilia

The main organs of the respiratory system

• heart

• lungs

• esophagus

• trachea

What is the main function of the respiratory system?

• to provide oxygen and remove carbon dioxide from the body
• to bring oxygen to the body
• to break down food and absorb nutrients
• to remove oxygen from the body and deliver carbon dioxide

What do we take in when we inhale?

• carbon dioxide

• oxygen

• lungs