GIT

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Author:
Marine
ID:
302258
Filename:
GIT
Updated:
2015-06-11 23:50:18
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physiology physio
Folders:
Physio
Description:
GIT
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  1. Secretion of saliva
    a) is stimulated by chemical stimuli in the mouth
    b) is inhibited by atropine
    c) is stimulated by increased parasympathetic activity
    d) can be affected by thoughts of food
    e) equals 5 - 6 l per 24 hours
    • a) is stimulated by chemical stimuli in the mouth
    • b) is inhibited by atropine
    • c) is stimulated by increased parasympathetic activity
    • d) can be affected by thoughts of food
  2. Rhythmic motility of the small intestine:
    A. is inhibited by adrenaline
    B. is inhibited by parasympathetic cholinergic fibres
    C. grows in frequency as we go from the duodenum to ileum
    D. is about 1 contraction per minute
    A. is inhibited by adrenaline
    (this multiple choice question has been scrambled)
  3. Gastric peristalsis:
    a. is inhibited by sympathetic activity
    b. occurs with a frequency of 3/min
    c. is speeded up by increased vagal activity
    d. is bigger in the antrum than in the fundus
    e. is blocked by curare
    • a. is inhibited by sympathetic activity
    • b. occurs with a frequency of 3/min
    • c. is speeded up by increased vagal activity
    • d. is bigger in the antrum than in the fundus
  4. The average production of gastric juice is:
    A. 0.1 l
    B. 0.1-0.5 l
    C. 1-3 l
    D. 15-20 l
    E. 5-10 l
    C. 1-3 l
    (this multiple choice question has been scrambled)
  5. Secretion of gastric juice is
    a) inhibited by small amount of alcohol in the stomach
    b) started when we see food
    c) stimulated by presence in the stomach of proteins and amino acids
    d) inhibited by gastrin when pH in the stomach drops below some level
    • b) started when we see food
    • c) stimulated by presence in the stomach of proteins and amino acids
  6. Which of these substances stimulate production of gastric acid?
    a. acetylcholine
    b. secretin
    c. gastrin
    d. histamine
    e. koffein
    f. ptyalin
    • a. acetylcholine
    • c. gastrin
    • d. histamine
    • e. koffein
  7. Release of gastrin is:
    a. inhibited by the expansion of the stomach
    b. stimulated by the inreased activity of the vagus
    c. inhibited by strong acidification (<3.5) of the stomach contents
    d. stimulated by products of protein digestion
    • b. stimulated by the inreased activity of the vagus
    • c. inhibited by strong acidification (<3.5) of the stomach contents
    • d. stimulated by products of protein digestion
  8. Which of these substances stimulate the secretion of bicarbonate by the pancreas most?
    A. pancreatic lipase
    B. histamine
    C. secretin
    D. cholecystokinin (aka pancreozymin)
    E. gastrin
    C. secretin
    (this multiple choice question has been scrambled)
  9. Which one of these substances does not affect the secretion of gastric and pancreatic juice?
    A. histamine
    B. gastrin
    C. pancreatic lipase
    D. cholecystokinin
    E. secretin
    C. pancreatic lipase
    (this multiple choice question has been scrambled)
  10. Which one of these statements about bile is correct?
    A. 90% of bile acids that enter the intestines with bile are excreted in the feces.
    B. The emptying of the gallbladder is controlled by enterohormones.
    C. The amount of bile that liver produce in 24 hours is roughly equal to the amount of saliva produced by salivary glands.
    D. Bile is also secreted between meals.
    E. Bile does not contain any digestive enzymes.
    A. 90% of bile acids that enter the intestines with bile are excreted in the feces.
    (this multiple choice question has been scrambled)
  11. Cholecystokinin mostly stimulates:
    A. production of gastric acid
    B. production of bile in the liver
    C. contractions of the gallbladder
    D. secretion of bicarbonate in the pancreas
    E. thickening of bile in the gallbladder
    C. contractions of the gallbladder
    (this multiple choice question has been scrambled)
  12. cholecystokinin:
    A. stimulates the peristaltic movements in the intestines.
    B. is produced within the lumen of the small intestine by fat as a prohormone and is transported into the liver and gallbladder with blood.
    C. suppresses production of bile in the liver.
    D. stimulates the outflow of bile from the gallbladder into the duodenum
    D. stimulates the outflow of bile from the gallbladder into the duodenum
    (this multiple choice question has been scrambled)
  13. The liver synthesises and secretes (into the bloodstream):
    a. fibrinogen
    b. prothrombin
    c. chylomicrons
    d. transferrin
    e. cholecystokinin
    • a. fibrinogen
    • b. prothrombin
    • d. transferrin
  14. Which one of these statements is correct?
    a. The Brunner's glands in the duodenum secrete fluid that has a neutral pH.
    b. The role of the gallbladder is to secrete bile.
    c. Bile can only be produced with the help of some enterohormones.
    d. Secretin does not influence pancreas secretion.
    e. None of the above is correct.
    e. None of the above is correct.
  15. Which one of the following statements about the small intestine is NOT correct?
    A. The extension of the intestinal wall leads to a relaxation of its smooth muscle.
    B. Propulsive peristaltic waves empty the small intestine 4 - 10 hours after the consumption of food.
    C. Vagal stimulation increases the motility of intestinal villi.
    D. Rhythmic segmentation serves to mix chyme.
    E. The content of the ileum is isotonic with blood plasma.
    A. The extension of the intestinal wall leads to a relaxation of its smooth muscle.
    (this multiple choice question has been scrambled)
  16. Which one of the following statements is not correct?
    A. Proteins are first broken down into amino acids and then resorbed by active transport mechanisms.
    B. Approximately 10% of water resorbed in the GIT arrise from secretions of digestive glands.
    C. Resorption of water from the intestines occurs passively by osmosis.
    D. Food remains in the stomach for approx. 1 - 3 hours. This period of time gets longer when the food contains large amounts of fat.
    B. Approximately 10% of water resorbed in the GIT arrise from secretions of digestive glands.
    (this multiple choice question has been scrambled)

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