Respiratory System

Which organs make up the respiratory system?

• Heart and blood vessels

• Lungs and air passages

• Stomach and intestines

• Kidneys and bladder

What is the main function of the respiratory system?

• Digests food

• Takes in oxygen and removes carbon dioxide

• Pumps blood

• Produces hormones

Fill in the blank: The body only has a ____ minute supply of oxygen, so the respiratory system must work continuously.

• 4-6

• 10-12

• 20-30

• 1-2

What are the two openings through which air enters the nasal cavity called?

• Turbinates

• Nostrils or nares

• Adenoid area

• Palate

What is the function of the nasal septum?

• Warms the air

• Divides the nose into right and left nasal cavities

• Traps dirt particles

• Produces mucous

Fill in the blank: The nasal cavities are hollow spaces that are lined with _______ membranes, which trap pathogens and dirt and moisten air.

• mucous

• serous

• synovial

• cutaneous

What is the role of cilia in the nasal cavity?

• Divide the nose

• Trap larger dirt particles and move mucous toward the esophagus

• Warm the air

• Produce blood supply

Sinuses are ______ in the skull.

• cavities

• muscles

• nerves

• joints

What area do the sinuses surround?

• the nasal area

• the ear canal

• the eye socket

• the jawbone

Sinuses are connected to nasal cavities by:

• Long tubes

• Short ducts

• Blood vessels

• Nerves