Rside A&P 12 Respiratory System

Which organ warms, moistens & filters air?

• diaphragm

• alveoli

• larynx

• nasal passage

Which organ has ciliated epithelial cells that sweep mucus away from the lungs?

• nasal passage

• trachea

• diaphragm

• alveoli

the pathway air takes during inspiration:

nasal passage -- pharynx -- larynx -- trachea -- ________ -- bronchioles -- alveoli

What causes air to enter the lungs during inspiration?

• diaphragm contracts

• intercostal muscles contract

• chest cavity volume increases

• air pressure in the lungs is lower than atmospheric pressure

Which of the following are true for expiration?

• air rushes into the lungs

• diaphragm & intercostal muscles relax

• air pressure in the lungs is higher than atmospheric pressure

• chest cavity volume increases

Which organ is also known as the voicebox?

• nasal passage

• larynx

• trachea

• bronchi

Which organ is also known as the windpipe?

• nasal passage

• larynx

• trachea

• bronchi

What structure is shown here?

• bronchi

• bronchiole

• alveoli

• diaphragm

The alveolus is where gas exchange takes place in the lung. How is the structure suited to this function?

• made of simple squamous epithelial cells

• made of pseudostratified columnar cells

• cilia sweeps mucus away from lungs

• cartilage rings keep structure open

How does the brain determine when to breathe in?

• receptors in major blood vessels detect high CO2

• stretch receptors in alveoli detect expansion

• brain isn't involved; lungs have autonomous pacemaker