Respiratory System A & P

What is exchanged for carbon dioxide (CO2) in the lungs?

• Nitrogen (N2)

• Oxygen (O2)

• Hydrogen (H2)

• Helium (He)

Fill in the blank: Inhalation is the flow of air ___ the lungs.

• into

• out of

• around

• away from

How does air enter the nasal cavity?

• Through the mouth

• Through two nares (nostrils)

• Through the ears

• Through the eyes

What is one of the functions of the mucus membrane?

• Lines the respiratory tract

• Creates pathogens

• Absorbs nutrients

• Secretes hormones

The mucus membrane secretes mucus that traps _______.

• dust and bacteria

• water and salt

• sugar and starch

• oxygen and carbon dioxide

What are cilia?

• Very small hairs

• Tiny bones

• Small muscles

• Little nerves

Where do cilia line?

• Opening to the nose

• Inside the stomach

• On the skin surface

• In the bloodstream

What is the function of cilia?

• Filter out dirt

• Help in digestion

• Transmit nerve signals

• Store energy

What is another name for the pharynx?

• throat

• esophagus

• larynx

• trachea

What is another name for the larynx?

• Voice box

• Windpipe

• Esophagus

• Trachea