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. Glottis

B. Epiglottis

C. Laryngopharynx

D. Uvula

Question #2

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

A. dilated; constrict

B. All the choices are true

C. constricted; dilate

D. mucus-filled; empty of mucus

Question #3

The chloride shift occurs in red blood cells to _______.

A. convert chloride ions to bicarbonate ions

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

C. provide chlorine to the enzyme carbonic anhydras

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

Question #4

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

A. carbonic anhydrase

B. carbon dioxide acidase

C. catalase

D. oxidase