PHY2820 Digestion Exam Study Guide
Which of the following statement is TRUE regarding the anatomy of the gastrointestinal
tract?
a. The serosal layer is the innermost layer
b. The muscularis externa layer of the large intestine consists of the oblique mucles
c. The Mucosa Associated Lymphatic Tissue will trigger the immune response towards
specific antigen along the mucosa
d. The lower 1/3rd of the oesophagus is lined with the voluntary skeletal muscle -
ANSWER C
Choose the correct statement about the smooth muscle cell in the gastrointestinal tract.
a. Decrease in myosin ATPase activity results in decreased muscle tension
b. Each of the smooth muscle cells are not electrically linked
c. There are more myosin component than the actin component
d. The fibers become globular when the calcium is pumped out from the cell - ANSWER
A
Regarding the pacemaker of the gastrointestinal tract ;
a. independent of calcium level
b. regulates the Basic Electrical Rhythm along the gastrointestinal tract
c. inhibits slow wave towards the smooth muscle cells
d. mesenchymal cells within the serosal layer of the gastrointestinal tract - ANSWER B
The chemical receptors located along the gastrointestinal tract will react upon
a. chyme acidity
b. chyme osmolarity
c. volume of the chyme
d. luminal distension - ANSWER A
Which of the following statements is TRUE regarding the neural regulation of the
gastrointestinal tract?
a. submucosal plexus regulates the secretory activity in the gastrointestinal tract
, b. short reflexes are mediated by the extrinsic system
c. The enteric nervous system consists of the splanchnic nerves
d. Enteric nervous system will be inhibited by the parasympathetic stimulation -
ANSWER A
The following statements are TRUE regarding the 3 phases of the gastrointestinal
control, EXCEPT ;
a. the intestinal phase is triggered when by an acidic chyme
b. caffeine stimulates the mechanoreceptors in the gastric phase
c. Cholecystokinin inhibits stomach secretory activity
d. Gastrin will stimulate secretion by the chief & parietal cells in cephalic phase
Feedback - ANSWER B
The propulsion of food down the gastrointestinal tract includes
a. the pharyngeal-esophageal phase, an involuntary process
b. deglutition, which is the elimination of undigested materials
c. the buccal phase, an involuntary phase controlled by swallowing centers in the
medulla and pons
d. the gastric phase, activated by distension of the stomach receptors
Feedback - ANSWER A
Hormones or paracrines that inhibit gastric secretion includes
a. secretin
b. vasoactive intestinal peptide
c. gastrin
d. motilin
Feedback - ANSWER A
With regards to the type of reflexes in the gastrointestinal tract ;
a. The gastroileal reflex is triggered as the chyme entered the duodenum
b. gastroileal reflex results in relaxation of the internal anal sphincter
c. long reflex involves direct stimulation to postganglionic fiber by the sensory neuron
Which of the following statement is TRUE regarding the anatomy of the gastrointestinal
tract?
a. The serosal layer is the innermost layer
b. The muscularis externa layer of the large intestine consists of the oblique mucles
c. The Mucosa Associated Lymphatic Tissue will trigger the immune response towards
specific antigen along the mucosa
d. The lower 1/3rd of the oesophagus is lined with the voluntary skeletal muscle -
ANSWER C
Choose the correct statement about the smooth muscle cell in the gastrointestinal tract.
a. Decrease in myosin ATPase activity results in decreased muscle tension
b. Each of the smooth muscle cells are not electrically linked
c. There are more myosin component than the actin component
d. The fibers become globular when the calcium is pumped out from the cell - ANSWER
A
Regarding the pacemaker of the gastrointestinal tract ;
a. independent of calcium level
b. regulates the Basic Electrical Rhythm along the gastrointestinal tract
c. inhibits slow wave towards the smooth muscle cells
d. mesenchymal cells within the serosal layer of the gastrointestinal tract - ANSWER B
The chemical receptors located along the gastrointestinal tract will react upon
a. chyme acidity
b. chyme osmolarity
c. volume of the chyme
d. luminal distension - ANSWER A
Which of the following statements is TRUE regarding the neural regulation of the
gastrointestinal tract?
a. submucosal plexus regulates the secretory activity in the gastrointestinal tract
, b. short reflexes are mediated by the extrinsic system
c. The enteric nervous system consists of the splanchnic nerves
d. Enteric nervous system will be inhibited by the parasympathetic stimulation -
ANSWER A
The following statements are TRUE regarding the 3 phases of the gastrointestinal
control, EXCEPT ;
a. the intestinal phase is triggered when by an acidic chyme
b. caffeine stimulates the mechanoreceptors in the gastric phase
c. Cholecystokinin inhibits stomach secretory activity
d. Gastrin will stimulate secretion by the chief & parietal cells in cephalic phase
Feedback - ANSWER B
The propulsion of food down the gastrointestinal tract includes
a. the pharyngeal-esophageal phase, an involuntary process
b. deglutition, which is the elimination of undigested materials
c. the buccal phase, an involuntary phase controlled by swallowing centers in the
medulla and pons
d. the gastric phase, activated by distension of the stomach receptors
Feedback - ANSWER A
Hormones or paracrines that inhibit gastric secretion includes
a. secretin
b. vasoactive intestinal peptide
c. gastrin
d. motilin
Feedback - ANSWER A
With regards to the type of reflexes in the gastrointestinal tract ;
a. The gastroileal reflex is triggered as the chyme entered the duodenum
b. gastroileal reflex results in relaxation of the internal anal sphincter
c. long reflex involves direct stimulation to postganglionic fiber by the sensory neuron
