Lectur 7 & 8
Digestive System Knowledge Quiz
Test your knowledge on the digestive system with this comprehensive quiz! Covering key concepts from lectures 7 & 8, you'll answer questions related to the anatomy, fun
Included Topics:
- Accessory organs
- GI system secretions
- Hormonal and neural regulation
- Fun
ctions of saliva - Role of the pancreas and liver
All of the follwinf are accessory organs except :
Salivary glands
Pancreas
Esophagus
Biliary system
The secretions of GI are controlled by
Neural
Hormonal factors
Two answers are correct
Enzymes
The smooth muscle in the walls of the digestive tract maintains a low level of contraction called:
Tone
Propulsive movement
Mixing movement
All of the above
Extrinsic nerves of the GIT are:
Non-autonomic nervous system innervate digestive structures from the outside
Sympathetic and parasympathetic innervation
Autonomic nervous system innervate digestive structures from the outside
None of the above
Two answers are correct
Smooth muscle that form the wall of GIT consists of:
Longitudinal muscle
Circular muscle
Longitudinal muscle & circular muscle
Skeletal muscel
None of the above
Action potential in skeletal muscle causes :
Excitatory of the muscle fibers
inhibition of the muscle fibers
Two answers are correct
None of the above
A peptide hormone of the GI system responsible for Stimulating the digestion of fat and protien :
Cholecystokinin hormone
ADH hormone
CCK hormone
Two answers are correct
Which of the following inhibit the muscle tone:
Basal ganglia
Brain stem
Frontal lobe
None of the above
All of the following are functions of Saliva except:
Saliva contains salivary amylase which begins digestion of carbohydrate in the mouth
Saliva facilitates swallowing by moistening food particles
Saliva serves as a solvent for molecules that stimulate the taste buds
None of the above
Salivary secretion is the digestive secretion that is controlled by :
Neural factors
Hormonal factors
Two answers are correct
None of the above
Excitation of parasympathetic nerve fibers of saliva Causes:
Increased watery secretion rich in electrolytes and enzymes
Decreased watery secretion rich in electrolytes and enzymes.
Slight increase in viscid saliva
Two answers are correct
Involuntary swallowing is initiated when a food bolus contacts receptors in the:
Tongue
Pharynx
Larynx
None of the above
The mixing movements of the stomach mix food with gastric juice producing chyme Most of this mixing occurs in:
The fundus
The antrum
The body
All of the following
Gastric emptying into the small intestine is inhibited by which of the following hormones:
Secretin
Pepsin
CCK
All of the follwing
A + C
All of the follwing are digestion locations except:
Mouth
Stomach
Esophagus
Large intestine
Two answers are correct
Chief cells in the stomach are responsible in:
Secreate pepsinogen
Converting pepsinogen to pepsin
Secreate HCL
Two ansers are correct
Absorption of vitamin B12 happen by:
By lower the stomach PH
The help of hydrochloric acid
The intrinsic factor
Two answers are correct
How D cells also protects the stomach lining?
Stimulates parietal cells which produce HCl
When acidity increases, these cells secrete pepsin which inhibits G cells
Two anwers are correct
When acidity increases, these cells secrete somatostatin which inhibits G cells that stimulates parietal cells which produce HCl
All of the following are factors affecting Chief and Parietal Cells except:
Acetylcholine secreted from the intrinsic nerve plexuses stimulates these cells
Histamine acts on chief cells to increase hydrochloric acid secretion
Gastrin (secreted by G cells) stimulates parietal and chief cells.
Somatostatin (secreted by D cells) inhibits secretions from parietal cells
Gastric secretions are released in which phase:
Intestinal phase
Gastric phase
Cephalic phase
A + B
All of the following are factors that inhibit Gastric secretions except:
Accumulation of acid in the stomach
As food leave the stomach, the protein concentration in the stomach is increased and there is less distension of the stomach
Hypertonicity and distension of duodenum sends inhibitory signals to gastric mucosa to decrease the secretion
None of the above
The enzymes that acinar cells secrete are:
Proteolytic enzymes
Two answer are correct
Pancreatic amylase
Pancreatic lipase
All of the above
What kind of cell produces bile acids?
Kupferr cells
Hepatocytes
Canalicual cells in epithelium
Gallbladder
The pacesetter of the GI tract is :
Submucosal plexus
Myentric plexus
Cajal cells
Sympathetic nervous system
Pancreas secretes are, and secrete it into, respectively :
Bile salts, stomach
Insulin, small intestine
Insulin & glucose , small intestine
Glucagon, small intestine
Two answer is correct
None of the above
Functions of the liver include the following except :
It carries out the metabolic processing of nutrients
It detoxifies or degrades body wastes like steroids and drugs
It synthesizes plasma proteins
Two answer is correct
It stores substances such as glycogen and fats and iron
None of the above
Carbohydrate , Protein digestion begins in,respectively:
The mouth , the stomach
The stomach , the mouth
Two answer is correct
Jejunum, the stomach
The small intestine mucosal lining has a rapid turnover It is renewed about :
Every 3 days
Every 5 days
Every week
Every 48 hour
Vitamin adsorption is mainly by:
Passive
Active transport
Facilitated transport
Two answer is correct
All of the following are functions of the beneficial bacteria in the colon except:
Making vitamin K by colonal bacteria
Enhancing intestinal immunity
Increasing colonic motility
Decreasing colonic motility
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