Systemic Physiology B Flashcards
The proventriculus of birds is homologous to what of ruminants?
a. abomasum
b. reticulum
c. rumen
d. omasum
Abomasum
Auerbach’s plexus can be found in the:
a. t. submucosa
b. lamina propria
c. t. serosa
d. t. muscularis
T. muscularis
The parasympathetic innervation of the upper GIT is carried in the:
a.pudendal nerve
b.vagus nerve
c. sacral nerve
d. pelvic nerve
Vagus nerve
This hormone is responsible for stimulating the migrating myoelectric complex (MMC).
a. motilin
b. secretin
c. enteroglucagon
d. peptide YY
Motilin
What are slow waves?
a. Undulating action potentials that directly cause muscle contraction.
b. Spontaneous, slow, transient depolarization that are considered as true action potential.
c. Transient depolarization that occurs at the period of maximum depolarization.
d. None of the choices.
None of the choices
What is segmentation?
a. A result of intermittent circular muscle contractions occurring at different sites on the segment.
b. A moving wave of luminal constriction preceded distally by an area of luminal distension.
c. A reflex wherein proximal to the bolus, there is distension and distal to the bolus there is constriction of muscles.
d. none of the choices
A result of intermittent circular muscle contractions occurring at different sites on the segment
Carnivores have well-developed and larger _______muscle to allow powerful upward movement of jaw while herbivores have larger _______ muscle to allow side to side jaw motion.
a. masseter; temporalis
b. temporalis; masseter
c. zygomaticus; buccinator
d. buccinator ; zygomaticus
Temporalis; Masseter
Which of the following is an incorrect pair of cells and their secretion?
a. parietal cells – HCl
b. ECL cells - histamine
c. chief cells – intrinsic factor
d. mucous neck cells – secrete mucus
Chief cells – intrinsic factor
Hydrogen ions are secreted from the parietal cells of the stomach by:
a. passive diffusion
b. hydrogen-potassium exchange pump
c. hydrogen-chloride symport
d. integral part of sodium pump
hydrogen-potassium exchange pump
What is the most essential agent for stimulation of secretion of HCl by the parietal cells?
a. gastrin
b. acetylcholine
c. cholecystokinin
d. histamine
Histamine
Which among of the following stimulate the release of HCL:
a. gastrin and acetylcholine
b. pepsin and histamine
c. pepsin and gastrin
d. somatostatin and gastrin
Gastrin and acetylcholine
Which of the following is the final site of enzymatic digestion and absorption of carbohydrates?
a. large intestine
b. small intestine
c. stomach
d. mouth
Small intestine
The form by which fats are extruded into intercellular spaces and into the central lacteal of the intestinal villus.
a. chylomicrons
b. chyle
c. micelles
d. chyme
Chylomicrons
It is the hormone that stimulates gall bladder contraction and pancreatic enzyme secretion.
a. GIP
b. secretin
c. cholecystokinin
d. motilin
Cholecystokinin
This digestive secretion does not contain a digestive enzyme:
a. bile
b. gastric secretion
c. pancreatic juice
d. salivary secretion
Bile
It has a distinctive “honeycomb” appearance and helps bring
boluses back up to the mouth for rechewing.
a. rumen
b. omasum
c. abomasum
d. reticulum
Reticulum
The VFA that is converted to ketone body during absorption is _____, while the gluconeogenic VFA is_____.
a. acetic acid; propionic acid
b. butyric acid; propionic acid
c. lactic acid; butyric acid
d. propionic acid; lactic acid
Butyric acid; propionic acid
Microbial synthesis of all B-vitamins is possible in ruminants, provided that _____ is adequate for Vit. B 12 cyanocobalamin) synthesis
a. iron ‘
b. flavoproteins
c. titanium
d. cobalt
Cobalt
Which of the following does not cause frothy bloat?
a. Foaming agents such as soluble leaf proteins, saponins,
and hemicelluloses.
b. Reduced saliva production in the presence of succulent
forages.
c. Physical obstruction of eructation due to foreign body.
d. Grazing on legume or legume dominant pastures.
Physical obstruction of eructation due to foreign body