Digestive System Overview

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What is the function of the serosa in the digestive system?

Facilitates absorption of nutrients

Releases digestive enzymes

Controls peristalsis movements

Holds the alimentary canal in place (correct)

Which of the following organs is NOT considered an accessory organ in the digestive system?

Salivary glands

Small intestine (correct)

Pancreas

Liver

What is the main function of the muscularis layer in the alimentary canal?

Stores bile

Absorbs nutrients

Promotes mechanical digestion (correct)

Releases digestive enzymes

How often does the epithelium layer of the mucosa replenish itself?

Every 3-7 days Signup and view all the answers

Which cells release hormones in the digestive system?

Enteroendocrine cells Signup and view all the answers

What is the purpose of goblet cells in the mucosa layer?

Keep the area moist Signup and view all the answers

What is the primary function of the stomach's production of intrinsic factor?

To allow for the absorption of vitamin B12 in the small intestine Signup and view all the answers

What is the main function of the peritoneum?

To hold the abdominal cavity in place Signup and view all the answers

Which of the following stomach secretions is responsible for bringing the pH down to 1.5-3.5?

Hydrochloric acid (HCl) Signup and view all the answers

What is the function of the hepatic portal system?

To take nutrient-rich blood from the small intestine to the liver Signup and view all the answers

What is the purpose of the mucosal barrier in the stomach?

To protect the stomach lining from being digested by its own gastric juices Signup and view all the answers

What is the difference between propulsion and peristalsis?

Propulsion is voluntary, peristalsis is automatic Signup and view all the answers

What is the role of the hepatopancreatic sphincter in the small intestine?

To control the flow of bile and pancreatic juice into the duodenum Signup and view all the answers

What is the function of the tongue?

All of the above Signup and view all the answers

What is the primary function of the villi in the small intestine?

To increase the surface area for absorption of nutrients Signup and view all the answers

What is the function of the salivary glands?

All of the above Signup and view all the answers

What is the purpose of the segmentation contractions in the small intestine?

To mix the chyme together for better digestion Signup and view all the answers

How many teeth do humans have in total?

52 teeth (20 deciduous + 32 permanent) Signup and view all the answers

What is the primary function of the ileocecal sphincter at the end of the small intestine?

To control the flow of chyme into the large intestine Signup and view all the answers

What is the function of the pharynx?

To allow for both digestion and respiration Signup and view all the answers

What is the primary role of the circular folds (plicae circulares) in the small intestine?

To slow the movement of chyme through the small intestine Signup and view all the answers

What is the purpose of the esophageal sphincters?

To separate the esophagus from the pharynx and stomach Signup and view all the answers

Which of the following is the longest section of the small intestine?

Ileum Signup and view all the answers

What is the main function of the stomach?

To contain food and aid in digestion Signup and view all the answers

What is the purpose of segmentation in the small intestine?

To move food back and forth to promote more digestion and absorption Signup and view all the answers

What is the primary function of the hepatic portal vein in the small intestine?

To carry nutrient-rich blood from the small intestine to the liver Signup and view all the answers

What is the main function of the ileocecal sphincter?

To relax and allow chyme to enter the large intestine Signup and view all the answers

How long does it typically take for chyme to leave the intestine?

3-5 hours Signup and view all the answers

What is the primary function of the large intestine?

All of the above Signup and view all the answers

Which of the following is NOT a part of the large intestine?

Duodenum Signup and view all the answers

What is the primary function of the hepatic portal vein?

To bring digested and absorbed food to the liver Signup and view all the answers

What is the role of bile in the digestive process?

To emulsify lipids Signup and view all the answers

What is the primary function of pancreatic amylase?

To break down disaccharides and polysaccharides into monosaccharides Signup and view all the answers

What is the primary function of the Valsalva maneuver?

To force contents towards the rectum Signup and view all the answers

What is the primary function of the hepatic sinusoid?

To allow the hepatocytes access to the blood Signup and view all the answers

What is the primary function of the external anal sphincter?

To relax voluntarily to allow the release of feces Signup and view all the answers

Digestive System Overview

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Questions and Answers

What is the function of the serosa in the digestive system?

Which of the following organs is NOT considered an accessory organ in the digestive system?

What is the main function of the muscularis layer in the alimentary canal?

How often does the epithelium layer of the mucosa replenish itself?

Which cells release hormones in the digestive system?

What is the purpose of goblet cells in the mucosa layer?

What is the primary function of the stomach's production of intrinsic factor?

What is the main function of the peritoneum?

Which of the following stomach secretions is responsible for bringing the pH down to 1.5-3.5?

What is the function of the hepatic portal system?

What is the purpose of the mucosal barrier in the stomach?

What is the difference between propulsion and peristalsis?

What is the role of the hepatopancreatic sphincter in the small intestine?

What is the function of the tongue?

What is the primary function of the villi in the small intestine?

What is the function of the salivary glands?

What is the purpose of the segmentation contractions in the small intestine?

How many teeth do humans have in total?

What is the primary function of the ileocecal sphincter at the end of the small intestine?

What is the function of the pharynx?

What is the primary role of the circular folds (plicae circulares) in the small intestine?

What is the purpose of the esophageal sphincters?

Which of the following is the longest section of the small intestine?

What is the main function of the stomach?

What is the purpose of segmentation in the small intestine?

What is the primary function of the hepatic portal vein in the small intestine?

What is the main function of the ileocecal sphincter?

How long does it typically take for chyme to leave the intestine?

What is the primary function of the large intestine?

Which of the following is NOT a part of the large intestine?

What is the primary function of the hepatic portal vein?

What is the role of bile in the digestive process?

What is the primary function of pancreatic amylase?

What is the primary function of the Valsalva maneuver?

What is the primary function of the hepatic sinusoid?

What is the primary function of the external anal sphincter?

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