Respiratory System

The human respiratory system is responsible for removing

• fat from cells

• carbon dioxide from blood

• hormones from glands

• nutrients from food

The (a)   is the chief muscle used in breathing. It pushes the lungs up when you exhale and pulls them down when you inhale.

• nostrils

• heart

• lungs

• diaphragm

What is the name of the tube that connects your mouth/nose to your lungs?

• diaphragm

• lungs

• alveoli

• trachea

What gas is INHALED during respiration?

• oxygen

• carbon dioxide

• nitrogen

• helium

Through which structure of the respiratory system are gasses exchanged?

• diaphragm

• lungs

• alveoli

• trachea

What gas is EXHALED during respiration?

• oxygen

• carbon dioxide

• nitrogen

• helium

The trachea branches into two smaller tubes called (a)   .

• lungs

• windpipes

• bronchi

• alveoli

Where does air FIRST enter the body during the breathing process?

• teeth and tongue

• trachea and bronchi

• mouth and nose

• small intestine

During respiration, (a)   is released.

• energy

• nutrients

• oxygen

• sweat

Tags

NGSS.MS-LS2-3

What are the main organs of the respiratory system?

• diaphragm

• alveoli

• trachea

• lungs