Human Digestive and Renal System Quiz

If the transport maximum (Tm) for a particular amino acid is 120 mg / 100 ml and the concentration of that amino acid in the blood is 230 mg /100 ml, the amino acid will

• be actively secreted into the glomerular filtrate.

• be completely reabsorbed by the tubule cells.

• appear in the urine.

• AandC.

If one says that the clearance value of glucose is zero, what does this mean?

• No glucose is filtered out of the blood.

• All of the glucose is filtered out.

• Normally all the glucose is reabsorbed.

• The clearance value of glucose is low but small amounts are lost in the urine.

Which of the following stomach cell types is correctly matched with its function?

• mucous cells — produce intrinsic factor.

• parietal cells — produce pepsinogen.

• chief cells — produce HCI.

• endocrine cells — produce gastrin.

When part of the stomach extends through the diaphragm into the thoracic cavity, the condition is known as

• esophagitis.

• an ulcer.

• a hiatal hernia.

• pyloric stenosis.

Reflux of the gastric contents into the esophagus occurs because of

• relaxation of the cardiac sphincter.

• contraction of the phyloric sphincter.

• spasms of the submucosal layer of the stomach wall.

• increased hydrochloric acid production by the parietal cells.

Nutrient-rich blood from the digestive tract comes to the liver by way of the

• hepatic artery.

• hepatic portal vein.

• hepatic vein.

• inferior vena cava.

Arrange the ducts in the order that bile would pass through them when moving from the bile canaliculi to the small intestine without being stored in the gallbladder.

• 3,4,2.

• 3,2,1.

• 4,2,1.

• 4,1,2.

The cephalic phase of gastric secretion

• decreases the release of gastrin on the stomach.

• is triggered by taste, thought, smell or food.

• is mediated by impulse on sympathetic nerves.

• leads to the greatest volume of gastric secretion.

The enterogastric reflex can be triggered by

• distension of the duodenal wall.

• the presence of irritating substances in the duodenum.

• increased pH in the duodenum.

• both A and B.

Gastrocolic reflexes are reflexes that

• empty the stomach.

• release gastric secretions into the stomach.

• cause mass movements of the colon when food is present in the stomach.

• lead to mass movements of the colon in response to food in the duodenum.