Los Angeles City College » Physiology » Physiology 001 - Introduction to Human Physiology » Winter 2022

Question #1

Occasionally food or liquids will "go down the wrong pipe," initiating a cough reflex. Which structural barrier has been breached if this happens?

A. Uvula

B. Laryngopharynx

C. Epiglottis

D. Glottis

Question #2

During an asthma attack, bronchioles become severely _______. Taking epinephrine causes them to _______.

A. mucus-filled; empty of mucus

B. dilated; constrict

C. All the choices are true

D. constricted; dilate

Question #3

The chloride shift occurs in red blood cells to _______.

A. counterbalance the exiting of negatively charged bicarbonate ions from red blood cells

B. counterbalance the exodus of H+ from red blood cells

C. provide chlorine to the enzyme carbonic anhydras

D. convert chloride ions to bicarbonate ions

Question #4

Red blood cells contain the enzyme _______, which catalyzes the formation of carbonic acid

A. oxidase

B. carbon dioxide acidase

C. carbonic anhydrase

D. catalase