Respiratory System

What is the main function of the respiratory system?

• to provide oxygen and remove carbon dioxide from the body

• o break down food and absorb nutrients

• to remove oxygen from the body and deliver carbon dioxide

What is function of the dome-shaped diaphragm muscle?

• This is where gas exchange happens.

• Air passes through the diaphragm on the way to the lungs.

• It attaches to the lungs and contracts and relaxes to help in breathing.

The tube in the body through which air moves as it travels to and from the lungs;the windpipe.

• heart
• bone
• blood vessel
• trachea 

Tiny air sacs in the lungs that are the site of gas exchange between the lungs and blood.

• alveoli​
• relax
• diaphragm​
• nose

A wide muscle that separates the chest cavity from the abdominal cavity and aids in the inflation of the lungs.

• diaphragm​
• heart
• nose
• trachea

The beginning point of the respiratory system where air is taken into the body.

• lung
• diaphragm​
• nose​
• trachea​

Place where air enters the body; warms, moistens, and filters incoming air.

• lungs
• mouth
• bronchioles
• nasal cavity/nose

Smaller branches of the bronchi inside the lungs.

• alveoli
• bronchioles
• larynx
• mouth

Main muscle that controls breathing by changing pressure in the chest cavity when it contracts or relaxes.

• mouth
• pharynx
• diaphragm
• alveoli

Common passageway of your nasal cavity and your mouth.

• pharynx
• larynx
• bronchi
• trachea