Med Term - Ch. 7 Respiratory (Video Lesson)

What is the primary function of the lungs?

• To pump blood throughout the body

• To facilitate gas exchange by supplying oxygen and removing carbon dioxide

• To digest and absorb nutrients

• To produce hormones for metabolism

Which lung structure is responsible for gas exchange?

• trachea

• bronchi

• alveoli

• diaphragm

How does the diaphragm contribute to breathing?

• It pumps oxygen into the blood

• It contracts and flattens to increase lung volume, allowing air to enter

• It filters air before it enters the lungs

• It stores oxygen for later use

How does a disease like emphysema affect lung function?

• It increases lung elasticity, making breathing easier

• It causes alveoli damage, reducing the lungs' ability to exchange gases efficiently

• It strengthens the diaphragm, improving lung capacity

• It speeds up oxygen exchange, making respiration more efficient