The Human Respiratory System

Given the following structures:
1. larynx
2. nasal cavity
3. pharynx
4. trachea
Which of the following is the correct order that air would flow during inhalation. 

• 1,2,3,4
• 2,3,1,4
• 2,1,3,4
• 4,2,3,1 

The actual gas exchange with the blood occurs in the 

• bronchi
• bronchioles
• alveoli
• ventricles

The use of oxygen by the cells to release energy from food is called...

• photosynthesis

• cellular respiration

• diffusion

• osmosis

Muscular structure that helps to expand and contract the lungs, forcing air in and out

• Pharynx
• Nasal cavity
• Alveoli
• Diaphragm

Passage way that moistens the air and has hairs to trap dust and particles

• Nasal cavity
• Bronchi
• Mouth cavity
• Larynx

How is carbon dioxide released from the body? 

• When we exhale
• When we urinate
• When we sweat
• When we inhale

During exhalation the diaphragm moves up and the volume of air decreases in the lungs.

• True
• False

After air moves through the pharynx it continues downward. The _____, or windpipe, directs the air into 2 separate branches or tubes.

• mucus
• trachea
• larynx
• epiglottis

The tubes that go from the trachea into the lungs

• alveoli
• diaphragm
• epiglottis
• bronchial tubes

cleans, moistens, and warms the air

• trachea
• larynx
• nasal passage
• windpipe