Featured Quizzes
User Quizzes
Create Quiz
Data and Charts
Word Search
Badges and Games
About JetPunk
Message Board
Dark Mode
GI Phys Revision
Rate:
Last updated: October 29, 2024
You have not attempted this quiz yet.
More quiz info >>
| First submitted | October 29, 2024 |
| Times taken | 16 |
| Average score | 85.0% | Report this quiz | Report |
60:00
The quiz is paused. You have remaining.
Copied!
Scoring
You scored / = %
This beats or equals
% of test takers
also scored 100%
The average score is
Your high score is
Your fastest time is
Keep scrolling down for answers and more stats ...
1. What effect does gastrin have in the stomach?
Inhibits acid secretion
Decreases mucous production
Stimulates gastric motility
Increases pepsinogen release
2. Emulsification of fats occurs in the:
Small intestine
Pancreas
Mouth
Stomach
3. Which of the following statements about the pyloric sphincter is true?
It regulates the release of small amounts of chyme
It allows continuous flow of chyme into the duodenum
It prevents the backflow of bile into the stomach
It is not involved in gastric motility
4. Which hormone is known to inhibit gastric secretions?
CCK
Histamine
Gastrin
Acetylcholine
5. What enzyme is activated from pepsinogen in the stomach?
Carboxypeptidase
Trypsin
Chymotrypsin
Pepsin
6. What allows oligopeptides to be absorbed across the enterocyte intact?
Simple diffusion
Active transport
Endocytosis
Transcytosis
7. Which factor does NOT affect glucose absorption?
Fiber content
Type of starch
Food processing
Water intake
8. What physiological changes occur during vomiting?
Contraction of the soft palate
Relaxation of both oesophageal sphincters
Decreased abdominal pressure
Increased thoracic pressure
9. Stretch receptors in the rectum are responsible for:
Promoting gastric emptying
Relaxing the inner sphincter and contracting the outer sphincter
Increasing bile secretion
Stimulating peristalsis in the small intestine
10. The secretion of HCO3- from duct cells of the pancreas is stimulated by:
Distention of the stomach
Fatty acids in the stomach
Increased gastric acid
Decreased duodenal pH
11. What initiates the migrating myoelectric complex during fasting?
Motilin
CCK
Gastrin
Secretin
12. Acid secretion in the stomach is primarily stimulated by which neurotransmitter?
Norepinephrine
Dopamine
Serotonin
Acetylcholine
13. Which part of the intestine is primarily responsible for digestion?
Colon
Jejunum
Duodenum
Ileum
14. What is the role of the gallbladder in digestion?
Secretes pancreatic enzymes
Stores and concentrates bile
Absorbs nutrients
Produces bile
15. What is the primary function of the large intestine?
Protein digestion
Nutrient absorption
Water and ion reabsorption
Enzyme secretion
16. What enzyme is secreted by the parotid gland to begin starch digestion?
Lingual lipase
Pancreatic amylase
Salivary amylase
Lactase
17. What type of enzyme is pepsin?
Amylase
Endopeptidase
Lipase
Exopeptidase
18. What is the function of bile salts?
Digestion of carbohydrates
Absorb amino acids
Activate pepsinogen
Emulsify lipids
19. What happens to gastrin production during the intestinal phase?
It increases
It fluctuates
It remains unchanged
It decreases
20. What triggers the cephalic phase of digestion?
CNS responses to smell, taste, and thought
Mechanical breakdown of food
Hormonal signals from the stomach
Stretching of the stomach walls
21. Intrinsic factor is crucial for the absorption of which vitamin?
Vitamin B12
Vitamin C
Vitamin D
Vitamin A
22. What transports amino acids into enterocytes?
H+ Cotransporter
Both A and B
Facilitated diffusion
Na+ Cotransporter
23. Which component of pancreatic secretions digests fats?
Trypsin
Pancreatic lipase
Pancreatic amylase
Bicarbonate
24. Soluble fiber can make the gastrointestinal tract:
Alkaline
Acidic
Hydrophobic
Viscous
25. The medullary central trigger zone is primarily involved in:
Gastric acid secretion
Peristalsis
Vomiting
Salivation
26. What does the ileo-caecal sphincter prevent?
Gastric reflux into the duodenum
Bile reflux into the ileum
Colonic flora reflux into the ileum
Pancreatic juices entering the ileum
27. Which enzyme converts trypsinogen to trypsin?
Pepsin
Carboxypeptidase
Chymotrypsin
Enterokinase
28. What is the primary function of lingual lipase found in saliva?
Initiates carbohydrate digestion
Increases pH levels
Begins the digestion of fats
Enhances flavour perception
29. Which of the following substances is secreted into the bloodstream by G cells?
Gastrin
HCl
Mucous
Pepsinogen
30. The motility of the large intestine is regulated by:
Neural reflexes and intrinsic mechanisms
External muscle contractions
Enzymatic actions
Hormonal signals only
31. Which reflex involves the distension of one section of the colon relaxing another?
Duodeno-colonic reflex
Recto-anal reflex
Gastro-colonic reflex
Colono-colonic reflex
32. What is the primary effect of secretin on pancreatic secretions?
Increases enzyme release
Stimulates bile release
Promotes bicarbonate release
Increases gastric acid secretion
33. Hormone-sensitive lipase is activated by:
Cortisol
Insulin
Growth hormone
Glucagon and epinephrine
34. Which enzyme is secreted by the pancreas for fat digestion?
Pancreatic lipase
Salivary amylase
Lingual lipase
Gastric lipase
35. Which of the following is NOT a function of the liver regarding amino acids?
Storage of excess amino acids
Conversion to glucose
Direct absorption into the bloodstream
Deamination
36. During the oropharyngeal phase of swallowing, which structure blocks aspiration of the bolus?
Soft palate
Epiglottis
37. What is a function of fiber in the diet?
It increases gastric emptying
It directly raises blood glucose levels
It adds bulk to stool
It is digested and absorbed for energy
38. Which cells in the stomach secrete pepsinogen?
Mucous cells
Parietal cells
Chief cells
G cells
39. CCK is primarily released in response to:
Proteins
Carbohydrates
Lipids and carbohydrates
Sugars
40. Which transporter is responsible for glucose and galactose absorption?
Fructose transporter
GLUT4
SGLT
GLUT2
41. Which hormones are released during the intestinal phase to inhibit stomach activity?
VIP, gastrin, and secretin
Insulin, glucagon, and CCK
Gastrin, secretin, and GIP
Secretin, CCK, and GIP
42. After absorption, amino acids can be converted into all of the following EXCEPT:
Creatine
Lipoproteins
Glucose
Insulin
43. What happens to triglycerides after they are absorbed into enterocytes?
They are stored in the stomach
They are immediately used for energy
They are converted into chylomicrons
They are excreted in the stool
44. Which nerve primarily stimulates gastric secretions through ACh?
Hypoglossal nerve
Vagus nerve
Glossopharyngeal nerve
Trigeminal nerve
45. The relaxation of the upper esophageal sphincter (UES) occurs during:
The oral phase of swallowing
The gastric phase of digestion
The vomiting reflex
The pharyngeal phase of swallowing
46. What happens to the rectum during the process of defecation?
It remains constantly full
It stores bile
It is normally empty
It contracts continuously
47. What enzyme converts chylomicrons into fatty acids in the cell?
Lipoprotein lipase
Pancreatic lipase
Gastric lipase
Hormone-sensitive lipase
48. Where does carbohydrate digestion begin?
Mouth
Small intestine
Pancreas
Stomach
49. Which hormone promotes triglyceride synthesis in adipose tissue?
Insulin
Epinephrine
Cortisol
Glucagon
50. What role does bicarbonate (HCO3-) play in the stomach?
Decreases pH
Stimulates gastric motility
Protects the mucosa by increasing pH
Inhibits pepsinogen activation
51. Chewing primarily serves to:
Activate the swallowing reflex
Initiate gastric secretion
Stimulate salivation
Form a bolus from food
52. Glycemic index measures:
The speed and height of blood glucose rise
The amount of fiber in food
The total caloric content of food
The total carbohydrate content in food
53. Which cranial nerves are involved in salivation?
V, VII, IX, X
III, IV, V
I, II, III
IX, X, XI
54. What type of carbohydrates are broken down into monosaccharides at the brush border?
Polysaccharides
Disaccharides
Oligosaccharides
All of the above
55. What is the basic electrical rhythm (BER) in the stomach?
An increase in pH levels
A hormonal signal from the pancreas
A rapid, high-frequency wave
An electrical current regulating motility
56. Where does protein digestion begin?
Mouth
Duodenum
Stomach
Small intestine
57. The swallowing reflex involves which of the following actions?
Relaxation of the soft palate
Increased respiratory rate
Contraction of the lower Oesophageal sphincter
Closure of the vocal cords
58. Which monosaccharide is absorbed via facilitated diffusion?
Glucose
Fructose
Sucrose
Galactose
59. What is the primary effect of deep inspiration during vomiting?
Increases thoracic pressure
Decreases abdominal pressure
Facilitates the expulsion of gastric contents
Closes the nasopharynx
60. Chylomicrons travel through the lymphatic system to:
The heart
The thoracic duct
The liver
The stomach
Save Your Stats
Your Next Quiz
Name all 50 states in the USA. Easy, right?
Can you name all the countries that have ever been members of OPEC, the Organization of Petroleum Exporting Countries?
Can you guess which of these are cities in Canada? One wrong guess, and the quiz instantly ends.
Drag the pin onto the correct country. Careful, though! Three wrong moves and the game ends.
Comments
No comments yet
New and Popular