Exam 16: The Digestive System

Gastric mixing is

Most of the fluid presented to the small intestine for absorption has been ingested in the most recent meal.

Identify the true statement(s) about the lipid emulsion in the digestive system.

All the pancreatic enzymes are secreted in inactive form.

Indicate which digestive secretion is being described in each question by writing the appropriate letter in the blank using the following answer code . a.bile salts b.pepsin(ogen) c.amylase d.lipase e.trypsin(ogen) -Secreted by the salivary glands

Excessive small intestinal motility can lead to constipation because there is less time for absorption to take place.

The stomach mucosa is thrown into folds known as villi.

The islets of ____________________ are the endocrine cells of the pancreas.

Indicate which digestive secretion is being described in each question by writing the appropriate letter in the blank using the following answer code . a.bile salts b.pepsin(ogen) c.amylase d.lipase e.trypsin(ogen) -Recycled many times through enterohepatic circulation

Match gastric cell with correct characteristic. a.chief cells b.parietal cells c.mucous cells d.G cells of PGA -Secrete pepsinogen

The pancreas secretes enzymes involved in the digestion of all three categories of foodstuff.

____________________ cells are the resident macrophages of the liver.

Saliva does not

Indicate which hormone(s) is being described by writing the appropriate letter in the blank using the following answer code. a.secretin and CCK b.secretin c.CCK d.gastrin -Stimulate(s) the pancreatic acinar cells

Match gastric cell with correct characteristic. a.chief cells b.parietal cells c.mucous cells d.G cells of PGA -Secrete HCl

Indicate which hormone(s) is being described by writing the appropriate letter in the blank using the following answer code. a.secretin and CCK b.secretin c.CCK d.gastrin -Secreted by the small intestine

The liver receives venous blood coming directly from the digestive tract and arterial blood coming from the aorta.

Match the following statements with all appropriate organ number(s).Some numbers may be used more than once. ________Secretes harmanes that inhibit the stamach __________Synthesizes bile __________Contans parietal and chef cells ___________All argans that produce an enryme that hydralyzes starch ____________Experiences mess movement ____________Thee structures atteched to the cecum _____________Cantains crypts of Lieberkibn ____________Stares a substance needed for fat emulsification _____________Stretching this initiztes the defecation reflex _____________Exgleriences 5epmentation ____________Stretching this initiates the ga5traieal and gastucalic reflexes ____________Esgeriences haustral churning

Slow-wave potentials are always accompanied by contractile activity.

The parietal cells secrete both pepsinogen and intrinsic factor.