chapter 21 A&P 2

Asthma is

an acute condition resulting from unusually sensitive, irritated conducting airways.

Air remaining in the conducting portion of the respiratory system that does not reach the alveoli is known as

anatomic dead space

A period in which breathing has stopped, followed by a forceful expulsion of air, is termed

apnea

Are chemoreceptors more sensitive to blood CO2 levels or blood O2 levels?

blood CO2 levels

A mucosa consists of

both an epithelium and an underlying layer of areolar tissue

Breathing through the nose rather than the mouth is advantageous for all of the following reasons except

decreased breath volume on inhalation

After a quiet expiration, the amount of air in your lungs is called the

functional residual capacity

Air moves out of the lungs when the pressure inside the lungs is

greater than the pressure in the atmosphere

All of the following are true regarding carbonic anhydrase except that

it can convert carbonic acid into CO2

All of the below are sensory stimuli that can stimulate respiratory reflexes except

nociceptors

Air passing through the glottis vibrates the vocal folds and produces

phonation

Air entering the body is filtered, warmed, and humidified by the

upper respiratory tract

A hemoglobin molecule contains ________ globular protein subunits.

2 alpha and 2 beta