35 Questions
What is the function of the accessory organs in the digestive system?
Help to breakdown food
Which layer of the alimentary canal contains smooth muscle that increases surface area?
Muscularis mucosa
How often does the epithelium lining of the alimentary canal replenish itself?
Every 3-7 days
Which organ is responsible for releasing hormones in the digestive system?
Pancreas
What is the role of goblet cells in the digestive system?
Keep the area moist
What is the primary function of the stomach?
To release intrinsic factor for vitamin B12 absorption
Which of the following cells in the stomach secrete hydrochloric acid (HCl)?
Parietal cells
What is the role of the pyloric sphincter?
To control the flow of food from the stomach to the duodenum
What is the purpose of the mucosal barrier in the stomach?
To protect the stomach from being digested by gastric juices
Which phase of gastric secretion is the first and briefest?
Cephalic phase
What is the purpose of the circular folds in the small intestine?
To slow the movement of chyme to allow for better absorption
What is the primary function of the villi in the small intestine?
To absorb fats through the lacteals
What is the role of the hepatopancreatic sphincter?
To control the flow of bile and pancreatic juice into the duodenum
What is the primary function of the ileocecal sphincter?
To connect the small intestine to the large intestine
What is the main purpose of the microvilli in the small intestine?
To increase the surface area for absorption
What is the main function of the myenteric plexus?
To control contractions of the alimentary canal
What is the role of the hepatic portal system?
To take nutrient-rich blood from the small intestine to the liver
What is the difference between propulsion and peristalsis?
Propulsion is voluntary, while peristalsis is automatic
What is the function of the uvula?
To stop food from entering the nasopharynx
What is the primary enzyme in saliva that breaks down carbohydrates?
Salivary amylase
How many permanent teeth do humans have?
32
What is the scientific term for swallowing?
Deglutition
What is the function of the epiglottis?
To stop food from going into the trachea and causing choking
What is the size of an empty stomach compared to a fist?
The size of a fist
What is the role of the lingual frenulum?
To hold the tongue in place
What is the function of the ileocecal sphincter?
To relax and allow chyme into the large intestine
How long does it typically take for chyme to leave the intestine?
3-5 hours
Which of the following is NOT a function of the large intestine?
Producing pancreatic enzymes
Where is the appendix located?
At the start of the large intestine
Which of the following is NOT a part of the large intestine?
Duodenum
What is the function of the rectal valves?
To separate chyme from gas
Which type of mechanical digestion in the large intestine mixes up chyme for better water absorption?
Haustral contraction
What is the function of the hepatic artery?
To bring oxygenated blood to the liver
What gives stool its normal color?
Bilirubin
Which enzyme is important for digesting carbohydrates in the small intestine?
Pancreatic amylase
This quiz provides an overview of the anatomy of the digestive system, including the main categories, structures, and functions. Learn about the alimentary canal (Gastrointestinal Tract) and the accessory organs that play a vital role in digestion.
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