Respiratory System

Diagram shows a model of human respiratory system. K represents....

• lung

• rib cage

• diaphragm

• thoracic cavity

Reorder the path of oxygen from the nostrils to the lungs.

• nasal cavity

• pharynx

• larynx

• trachea

Reorder to show the path of oxygen after it enters the lungs.

• bronchi

• bronchioles

• alveoli

• blood

What is the purpose of the cartilage that surrounds the larynx and trachea?

• Cartilage prevents them from collapsing as air is exchanged.

• Cartilage helps to amplify sound when speaking.

• Cartilage helps to filter out impurities from the air we breathe.

• Cartilage helps to regulate the temperature of the air we breathe.

What is the function of the cilia that extend from the cells lining the respiratory system?

• Cilia help move foreign particles out of the respiratory tract.

• Cilia help transport oxygen molecules into the respiratory system.

• Cilia help regulate the temperature of the respiratory system.

• Cilia help produce mucus to protect the respiratory system.

The volume of the lungs ​ (a)   causing the pressure in the lungs to ​ (b)   . This results in inspiration.

• increases
• decrease

​ (a)   of the diapraghm and external intercostals cause the volume of the rib cage to ​ (b)   . ​ (c)   of the diaphragm and external intercostals cause the volume of the rib cage to ​ (d)   .

• Contraction
• Expand
• Relaxation
• Become Smaller

The air sacs at the ends of the bronchioles are called

• alveoli

• Bronchus

• Surfactants

• Bronchopulmonary Segments

Tags

NGSS.HS-LS2-5

When air moves out of the lungs it is called ​ (a)   . When air moves into the lungs it is called ​ (b)   .

• expiration
• inspiration

What is the main function of the respiratory system?

• to provide oxygen and remove carbon dioxide from the body

• to detoxifies inhaled air

• to break down food and absorb nutrients

• to remove oxygen from the body and deliver carbon dioxide