VM 575 EXAM QUESTIONS AND ANSWERS
LATEST UPDATED.
There are many functions of saliva, one of which is immunity. Which
immunoglobulin is most involved in saliva?
IgA
There are many functions of saliva, what is the function of the bicarb
(HCO3-) component?
buffering prior to initiation of digestion
Why is the release of R factor in saliva important?
binding protein for vitamin B12 transport
What are the four main electrolyte components of saliva?
1. sodium
2. bicarbonate
3. chloride
4. potassium
Which part of the digestive system does imitation of protein digestion
occur?
stomach
True or false:
In the digestive tract, the only portion that reduces size of food particles is
the mouth
false: a function of the stomach is to decrease size of ingested particles
What is the average pH of the stomach and why is this important?
1-2; inactivation of ingested bacteria, viruses, and parasites
, One function of the stomach is to secrete _____________ __________
which binds to vit B12 (cobalamin) so that it is able to travel to the
absorption sites in the distal ileum.
intrinsic factor
What in the stomach is responsible for turning ferric iron into the
absorbable ferrous form?
HCl
What are the two plexuses of the intrinsic (enteric) nervous system
involved in intestinal motility?
1. submucosal plexus
2. myenteric plexus
In regards to motility
Phasic or tonic contractions:
contractions followed by relaxation
phasic
In regards to motility, which type of contractions is best described as:
- propagating
- esophageal body
- gastric antrum
- small intestine
phasic
Which type of contraction in the GI system is best described by the
following:
- maintain a constant level of contraction or tone with only intermittent
periods of relaxation
tonic
Which type of digestive system motility pattern"
- mix locally and circulate the contents
LATEST UPDATED.
There are many functions of saliva, one of which is immunity. Which
immunoglobulin is most involved in saliva?
IgA
There are many functions of saliva, what is the function of the bicarb
(HCO3-) component?
buffering prior to initiation of digestion
Why is the release of R factor in saliva important?
binding protein for vitamin B12 transport
What are the four main electrolyte components of saliva?
1. sodium
2. bicarbonate
3. chloride
4. potassium
Which part of the digestive system does imitation of protein digestion
occur?
stomach
True or false:
In the digestive tract, the only portion that reduces size of food particles is
the mouth
false: a function of the stomach is to decrease size of ingested particles
What is the average pH of the stomach and why is this important?
1-2; inactivation of ingested bacteria, viruses, and parasites
, One function of the stomach is to secrete _____________ __________
which binds to vit B12 (cobalamin) so that it is able to travel to the
absorption sites in the distal ileum.
intrinsic factor
What in the stomach is responsible for turning ferric iron into the
absorbable ferrous form?
HCl
What are the two plexuses of the intrinsic (enteric) nervous system
involved in intestinal motility?
1. submucosal plexus
2. myenteric plexus
In regards to motility
Phasic or tonic contractions:
contractions followed by relaxation
phasic
In regards to motility, which type of contractions is best described as:
- propagating
- esophageal body
- gastric antrum
- small intestine
phasic
Which type of contraction in the GI system is best described by the
following:
- maintain a constant level of contraction or tone with only intermittent
periods of relaxation
tonic
Which type of digestive system motility pattern"
- mix locally and circulate the contents
