A&P II practice exam 2

The cells that perform immunological surveillance are the ________ cells. A) NK B) plasma C) B D) helper T E) suppressor T

A) NK

In response to the arrival of acidic chyme in the duodenum, the A) blood levels of secretin rise. B) blood levels of cholecystokinin fall. C) blood levels of gastrin rise. D) blood levels of enterocrinin fall. E) liver releases enzymes for chemical digestion.

A) blood levels of secretin rise.

The nasal cavity, pharynx, and larynx constitute the ________ portion of the airway. A) conducting B) exchange C) respiratory D) sinus E) primary

A) conducting

Dalton's law of gases relates to A) partial pressure of a gas in a mixture of gases. B) temperature and pressure of gases. C) solubility of gases. D) gas pressure and saturation of hemoglobin. E) volume and gas pressure.

A) partial pressure of a gas in a mixture of gases.

Chief cells secrete A) pepsinogen. B) gastrin. C) mucus. D) hydrochloric acid. E) intrinsic factor.

A) pepsinogen

The respiratory epithelium of the conducting airways consists of A) pseudostratified ciliated columnar epithelium. B) moist cuboidal epithelium. C) simple squamous epithelium. D) ciliated squamous epithelium. E) stratified squamous epithelium.

A) pseudostratified ciliated columnar epithelium.

Hydrochloric acid from the stomach is neutralized in the small intestine by A) water that was ingested with the food. B) bicarbonate from the pancreas. C) trypsin. D) bile from the liver. E) enzymes from the intestinal crypts.

B) bicarbonate from the pancreas

External respiration involves the A) movement of air into and out of the lungs. B) diffusion of gases between the alveoli and the circulating blood. C) exchange of dissolved gases between the blood and the interstitial fluid. D) binding of oxygen by hemoglobin. E) utilization of oxygen by tissues to support metabolism.

B) diffusion of gases between the alveoli and the circulating blood.

Blockage of the common hepatic duct would interfere with the digestion of A) proteins. B) fats. C) disaccharides. D) complex carbohydrates. E) vitamins.

B) fats

Which digestive juice contains enzymes that breakdown carbohydrates, lipids, and proteins? A) intestinal juice B) pancreatic juice C) bile D) gastric juice E) saliva

B) pancreatic juice

The lymphatic system does all of the following except A) helps maintain normal blood volume. B) transports gases to and away from lymph nodes. C) eliminates variations in the composition of interstitial fluid. D) transports lipids from the digestive tract. E) fights infection.

B) transports gases to and away from lymph nodes

During the cephalic phase of gastric secretion, A) the stomach responds to distention. B) secretin inhibits parietal and chief cells. C) increased production of gastric juice occurs. D) the intestinal reflex inhibits gastric emptying. E) production of gastric juice slows down.

C) increased production of gastric juice occurs

Lymphocytes that destroy foreign cells or virus-infected cells are ________ cells. A) B B) plasma C) helper T D) cytotoxic T E) suppressor T

D) cytotoxic T

Parietal cells secrete A) pepsinogen. B) gastrin. C) mucus. D) hydrochloric acid. E) enteropeptidase.

D) hydrochloric acid

Digestion refers to the A) progressive dehydration of indigestible residue. B) mechanical breakdown of food. C) chemical breakdown of food. D) mechanical and chemical breakdown of food. E) All of the answers are correct.

D) mechanical and chemical breakdown of food

The essential functions of the liver include A) metabolic regulation. B) hematological regulation. C) bile production. D) albumin production for blood osmotic pressure. E) All of the answers are correct.

E) All of the answers are correct.

Which of the following enhance the absorptive effectiveness of the small intestine? A) the circular folds B) the villi C) the microvilli D) intestinal movements E) All of the answers are correct.

E) All of the answers are correct.

The body's innate defenses include all of the following except A) the skin. B) complement. C) interferon. D) inflammation. E) antibodies.

E) antibodies