wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Digestion Quiz - Docs

Total questions: 60

Worksheet time: 3600secs

Name
Class
Date
1.

Which of the following are primary mechanical functions of the digestive system?

a)

Mastication

b)

Emulsification

c)

Segmentation

d)

Glycogenesis

2.

Digestion in the cavity (luminal) primarily involves which enzymes?

a)

Salivary amylase

b)

Brush‐border lactase

c)

Pancreatic lipase

d)

Enterocyte aminopeptidase

3.

Brush‐border digestion occurs on enterocyte microvilli and includes:

a)

Sucrase–isomaltase

b)

Pepsin

c)

Maltase

d)

Trypsin

4.

The submucosal (Meissner’s) plexus mainly regulates:

a)

Secretion

b)

Motility

c)

Blood flow

d)

Swallowing reflex

5.

The myenteric (Auerbach’s) plexus is located between:

a)

Mucosa and submucosa

b)

Circular and longitudinal muscle layers

c)

Serosa and muscle layers

d)

Epithelium and lamina propria

6.

Sensory neurons in the enteric nervous system detect:

a)

pH changes

b)

Chyme distension

c)

Blood glucose

d)

Luminal osmolarity

7.

Parasympathetic vagal stimulation of the gut uses which neurotransmitter?

a)

Norepinephrine

b)

Acetylcholine

c)

Serotonin

d)

VIP

8.

Sympathetic inhibition of gut motility primarily involves:

a)

β₂‐receptors on smooth muscle

b)

M₃‐receptors on parietal cells

c)

α₁‐receptors on sphincters

d)

H₂‐receptors on parietal cells

9.

Gastrin is secreted by G cells in response to:

a)

Gastric acid

b)

Amino acids in stomach

c)

Duodenal fats

d)

Vagal GRP

10.

CCK release is stimulated by:

a)

Luminal H⁺

b)

Long‐chain fatty acids

c)

Glucose absorption

d)

Amino acids and peptides

11.

Secretin is released from S cells when duodenal pH falls below:

a)

3.5

b)

4.5

c)

5.5

d)

6.5

12.

GIP has which effect?

a)

Stimulates insulin release

b)

Inhibits gastric acid

c)

Stimulates motilin release

d)

Increases gastric motility

13.

Somatostatin secreted by D cells inhibits all EXCEPT:

a)

Gastrin release

b)

Acid secretion

c)

Pancreatic enzyme release

d)

Hepatic bile secretion

14.

Chewing reflex is triggered by:

a)

Stretch receptors in masseter

b)

Periodontal mechanoreceptors

c)

Vagal afferents only

d)

Taste‐bud activation

15.

The pharyngeal phase of swallowing is:

a)

Voluntary

b)

Involuntary

c)

Controlled by CN IX & X

d)

Controlled by the enteric plexus

16.

The upper esophageal sphincter at rest prevents:

a)

Air entry into stomach

b)

Gastric reflux

c)

Esophageal peristalsis

d)

Food entering pharynx

17.

Primary esophageal peristalsis is triggered by:

a)

Pharyngeal swallow

b)

Esophageal distension

c)

Enteric reflex only

d)

Colonic mass movements

18.

Secondary peristalsis in the esophagus is initiated by:

a)

Pharyngeal input

b)

Local distension receptors

c)

Vagal motor output

d)

Pyloric reflex

19.

Basal salivary flow rate is approximately:

a)

0.1 mL/min

b)

0.4 mL/min

c)

1.0 mL/min

d)

2.0 mL/min

20.

At high salivary flow, saliva becomes:

a)

Hypotonic

b)

Higher Na⁺ & Cl⁻

c)

Lower K⁺ & HCO₃⁻

d)

Approaches plasma composition

21.

Parotid saliva is primarily:

a)

Serous

b)

Mucous

c)

Mixed

d)

Viscous

22.

Salivary α-amylase acts on:

a)

Starch

b)

Proteins

c)

Lipids

d)

Lactose

23.

Gastric slow waves occur at:

a)

1–2/min

b)

3–5/min

c)

6–8/min

d)

10–12/min

24.

Antral peristaltic contractions are initiated by:

a)

Slow waves reaching threshold

b)

Enteric nervous bursts

c)

Vagal parasympathetic only

d)

Gastrin peaks

25.

Gastric emptying is slowed by:

a)

Duodenal acid

b)

Hyperosmolar chyme

c)

High fat in duodenum

d)

Increased fundic tone

26.

Parietal cells secrete HCl by exchanging H⁺ for which ion?

a)

Na⁺

b)

K⁺

c)

Cl⁻

d)

Ca²⁺

27.

Carbonic anhydrase in parietal cells:

a)

Hydrolyzes pepsinogen

b)

Forms H₂CO₃ from CO₂ + H₂O

c)

Converts CO₂ to urea

d)

Releases intrinsic factor

28.

Cl⁻ enters the parietal cell from blood via:

a)

HCO₃⁻/Cl⁻ antiporter

b)

Na⁺/Cl⁻ cotransporter

c)

Passive Cl⁻ channel

d)

CFTR on basolateral side

29.

ACh stimulates acid via which receptor subtype?

a)

M₁

b)

M₂

c)

M₃

d)

M₄

30.

Histamine’s action on parietal cells is via:

a)

H₁ receptor

b)

H₂ receptor

c)

Gq‐coupled pathway

d)

Gs‐coupled pathway

31.

Somatostatin inhibits acid by:

a)

Raising cAMP

b)

Lowering cAMP

c)

Blocking H₂ receptors

d)

Suppressing gastrin release

32.

PPIs act by:

a)

Blocking H₂ receptors

b)

Inhibiting H⁺/K⁺-ATPase

c)

Increasing somatostatin

d)

Reducing proton-pump insertion

33.

The cephalic phase accounts for about what percent of meal acid?

a)

10%

b)

30%

c)

60%

d)

80%

34.

Parietal cells secrete HCl by exchanging H⁺ for which ion?

a)

Na⁺

b)

K⁺

c)

Cl⁻

d)

Ca²⁺

35.

Gastric-phase acid secretion is triggered by:

a)

Antral distension

b)

Peptides in stomach

c)

Duodenal fat

d)

Duodenal acid

36.

Intestinal-phase acid secretion involves:

a)

Secretin inhibiting gastrin

b)

CCK stimulating acid

c)

Enterogastric reflexes

d)

Pancreatic enzymes

37.

Prodromal symptoms of vomiting include:

a)

Retching

b)

Nausea

c)

Salivation

d)

Diarrhea

38.

The chemoreceptor trigger zone (CTZ) is activated by which nerves?

a)

Vagal nerves

b)

Splanchnic nerves

c)

Sciatic nerve

d)

Enteric plexus

39.

Motion‐sickness vomiting is mediated by afferents from which system?

a)

Vagus nerve

b)

Glossopharyngeal nerve

c)

Vestibular apparatus

d)

Splanchnic nerves

40.

Which dietary protein is “incomplete” due to lysine deficiency?

a)

Egg white

b)

Soy protein

c)

Corn protein

d)

Beef protein

41.

Primary esophageal peristalsis is initiated by:

a)

Pharyngeal swallowing reflex

b)

Local esophageal distension

c)

Gastrocolic reflex

d)

Colonic mass movements

42.

Serotonin (5-HT) released by enterochromaffin cells in the gut primarily:

a)

Stimulates gastric acid secretion

b)

Enhances pancreatic enzyme release

c)

Initiates peristaltic reflexes via enteric neurons

d)

Inhibits migrating motor complexes

43.

The intrinsic pace of gastric slow waves (~3–5/min) is generated by:

a)

Smooth-muscle cells

b)

Submucosal plexus neurons

c)

Interstitial cells of Cajal

d)

Parietal cells

44.

Which bile constituent directly neutralizes acidic chyme in the duodenum?

a)

Bile salts

b)

Sodium bicarbonate

c)

Cholesterol

d)

Lecithin

45.

The average duration of one chewing cycle is about:

a)

0.2–0.4 s

b)

0.8–1.2 s

c)

2–3 s

d)

5 s

46.

The average duration of one chewing cycle is about:

a)

0.2–0.4 s

b)

0.8–1.2 s

c)

2–3 s

d)

5 s

47.

The pharyngeal phase of swallowing is mediated by which cranial nerves?

a)

Trigeminal (V)

b)

Facial (VII)

c)

Glossopharyngeal (IX)

d)

Vagus (X)

48.

The lower esophageal sphincter consists of:

a)

Skeletal muscle

b)

Smooth muscle

c)

Striated muscle

d)

Fibrous tissue

49.

Receptive relaxation of the stomach involves:

a)

Sympathetic reflexes

b)

Enteric short reflexes

c)

Vago-vagal reflexes

d)

Motilin release

50.

The liver produces roughly how much bile per day under basal conditions?

a)

250 mL

b)

500 mL

c)

1.0 L

d)

2.0 L

51.

Salivary lysozyme contributes to oral defense by:

a)

Hydrolyzing starch

b)

Cleaving peptidoglycan

c)

Activating pepsinogen

d)

Emulsifying fats

52.

How many basic taste modalities are classically recognized?

a)

Three

b)

Four

c)

Five

d)

Six

53.

The myenteric (Auerbach’s) plexus primarily controls:

a)

Mucosal secretion

b)

Smooth-muscle tone & motility

c)

Hormone release

d)

Salivary secretion

54.

GLP-1 from L cells promotes:

a)

Insulin secretion

b)

Gastric emptying

c)

Satiety

d)

Glucagon release

55.

Motilin is highest during:

a)

Fed state

b)

Fasting interdigestive periods

c)

Gastric phase

d)

Intestinal phase

56.

The vago-vagal reflex during swallowing causes:

a)

LES relaxation

b)

Fundic contraction

c)

Pyloric tightening

d)

UES opening

57.

Receptive relaxation maintains low gastric pressure until about:

a)

200 mL

b)

500 mL

c)

1.5 L

d)

3.0 L

58.

Peripheral vomiting afferents travel via:

a)

Vagus nerve

b)

Splanchnic nerves

c)

Sciatic nerve

d)

Enteric plexus

59.

Hepatic bile contains all of the following except:

a)

Bile salts

b)

Cholesterol

c)

Bilirubin

d)

Pancreatic lipase

60.

Which transporter mediates active uptake of bile salts in the terminal ileum?

a)

ASBT (Apical Sodium‐Bile acid Transporter)

b)

NTCP (Na⁺‐Taurocholate Cotransporting Polypeptide)

c)

SGLT1 (Sodium‐Glucose Linked Transporter 1)

d)

PEPT1 (H⁺‐Peptide Cotransporter)

Similar Resources on Wayground

Ujian Biokimia pada Tubuh Manusia

58 questions

Ujian Biokimia pada Tubuh Manusia

quiz

Worksheet

•

University

UCR Spring 2025: Psych 115 Practice final

60 questions

UCR Spring 2025: Psych 115 Practice final

quiz

Worksheet

•

University

L07 Urinary system 2

56 questions

L07 Urinary system 2

quiz

Worksheet

•

University

Applied Nutrition Exam 1: Carbs, Protein, Fats, Obesity, Hormone

60 questions

Applied Nutrition Exam 1: Carbs, Protein, Fats, Obesity, Hormone

quiz

Worksheet

•

University

review for test 2

60 questions

review for test 2

quiz

Worksheet

•

University

Page 1

60 questions

Page 1

quiz

Worksheet

•

University

Functions and Organization of the Nervous System

64 questions

Functions and Organization of the Nervous System

quiz

Worksheet

•

University

Câu hỏi về kháng sinh

60 questions

Câu hỏi về kháng sinh

quiz

Worksheet

•

University