Exam 11: The Respiratory System

Indicate which chemical factor is responsible for the effect described by using the answer code (options may be used more than once or not at all): -stimulates peripheral chemoreceptors as an emergency mechanism

The bronchioles are rigid,nonmuscular airways encircled by a series of cartilaginous rings.

MATCHING Indicate which lung volume or capacity is being described in the column below by using the answer code (options may be used more than once or not at all): -amount of air breathed in and out in one minute

What does NOT happen/s during forceful expirations?

What is the respiratory quotient?

What does NOT happen during inspiration?

Which factor would result in bronchoconstriction?

Boyle's law states that the pressure exerted by a gas varies directly with the volume of the gas.

MATCHING Indicate which lung volume or capacity is being described in the column below by using the answer code (options may be used more than once or not at all): -the maximum volume of air that can be inspired at the end of a normal expiration

If the tidal volume is 500 mL and the anatomic dead space volume is 150 mL,only 350 mL of air enters the alveoli during inspiration.

MATCHING Indicate which lung volume or capacity is being described in the column below by using the answer code (options may be used more than once or not at all): -volume of air that can be expired during the first second of expiration in a vital-capacity determination

The pleural cavity normally is not in direct communication with the lungs or atmosphere.

Systemic arterial PCO₂ is less than tissue PCO₂.

In the breathing cycle,the atmospheric pressure normally does not change.

What is the primary form in which CO₂ is transported in the blood?

MATCHING Indicate which lung volume or capacity is being described in the column below by using the answer code (options may be used more than once or not at all): -the extra volume of air that can be maximally inspired over and above the tidal volume

Which statement is NOT true for hypercapnia?

Elastic recoil refers to the tendency of the chest wall to expand.

What does NOT occur when blood flow to an area of the lungs is reduced but the area receives normal air flow?

Indicate which type of hypoxia would be present in each of the circumstances listed below by using the answer code (options may be used more than once or not at all): -cyanide poisoning