Digestive System Organs Overview

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

To increase the surface area for nutrient absorption (correct)
To store excess nutrients
To produce digestive enzymes
To propel food through the small intestine

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

Colon (correct)
Jejunum
Ileum
Duodenum

What is the primary function of the enzyme secretin produced in the duodenum?

To stimulate the production of pancreatic juice (correct)
To stimulate the production of gastric juice
To stimulate the contraction of the stomach
To stimulate the production of bile

What is the primary purpose of the circular folds (plica) in the small intestine?

To increase the surface area for absorption (A) Signup and view all the answers

What is the primary function of the microvilli on the surface of the intestinal cells?

To increase the surface area for nutrient absorption (A) Signup and view all the answers

What is the primary purpose of the brush border enzymes found on the microvilli of the small intestine?

To initiate the digestion of carbohydrates and proteins (C) Signup and view all the answers

What is the main function of the stomach in the digestive system?

To continue the mechanical and chemical digestion of food, primarily proteins (A) Signup and view all the answers

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

Small Intestine (B) Signup and view all the answers

What is the main function of the salivary glands in the digestive system?

To secrete saliva containing enzymes that initiate the breakdown of carbohydrates (B) Signup and view all the answers

Which part of the small intestine is responsible for the majority of nutrient absorption?

Jejunum (B) Signup and view all the answers

What is the main function of the large intestine (colon) in the digestive system?

To absorb water and electrolytes from undigested food, forming feces (B) Signup and view all the answers

What is the main function of the pancreas in the digestive system?

To produce digestive enzymes and bicarbonate ions that help break down carbohydrates, fats, and proteins (A) Signup and view all the answers

Which of the following is the correct order of the steps involved in food nutrient absorption?

Break down food, absorb into bloodstream, eliminate waste (D) Signup and view all the answers

Which of the following is NOT an organ of the alimentary canal?

Salivary glands (D) Signup and view all the answers

Where does the mechanical breakdown of food begin?

Mouth (A) Signup and view all the answers

Which enzyme is present in saliva and aids in the digestion of carbohydrates?

Amylase (A) Signup and view all the answers

What is the name of the semi-solid mixture of partially digested food and gastric juices that leaves the stomach and enters the small intestine?

Chyme (A) Signup and view all the answers

Which part of the digestive system is responsible for the absorption of nutrients into the bloodstream?

Small intestine (C) Signup and view all the answers

Which of the following is NOT a function of the circular folds (plicae circulares) in the small intestine?

Facilitate the mechanical breakdown of food (B) Signup and view all the answers

What is the primary function of the brush border enzymes found on the microvilli of the small intestine?

Perform the final stages of carbohydrate and protein digestion (C) Signup and view all the answers

Which of the following is NOT a function of the salivary glands in the digestive system?

Production of hydrochloric acid for protein digestion (A) Signup and view all the answers

Which of the following is the correct order of the steps involved in food nutrient absorption in the small intestine?

Villi -> Microvilli -> Capillaries -> Lymphatic vessels (C) Signup and view all the answers

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

Esophagus (A) Signup and view all the answers

Which of the following statements about the stomach is INCORRECT?

The stomach is responsible for the absorption of nutrients into the bloodstream (C) Signup and view all the answers

Which of the following sequences correctly represents the order of the steps involved in nutrient absorption in the small intestine?

Enzymatic digestion, Chyme formation, Passive diffusion, Active transport (A) Signup and view all the answers

Which of the following statements accurately describes the two types of digestion that occur in the human digestive system?

Mechanical digestion involves the physical breakdown of food by chewing and peristalsis, while chemical digestion involves the enzymatic breakdown of food molecules. (C) Signup and view all the answers

Which of the following substances is NOT produced by the salivary glands?

Pepsin (D) Signup and view all the answers

Which of the following statements accurately describes the function of the gastric pits and gastric glands in the stomach?

Gastric pits secrete digestive enzymes like pepsin, while gastric glands secrete hydrochloric acid. (C) Signup and view all the answers

Which of the following statements accurately describes the function of the circular folds (plicae circulares) in the small intestine?

They increase the surface area for nutrient absorption by creating circular ridges along the intestinal lining. (A) Signup and view all the answers

Which of the following statements accurately describes the role of the hormone gastrin in the digestive process?

Gastrin stimulates the production of hydrochloric acid and pepsinogen by the gastric glands in the stomach. (A) Signup and view all the answers

Which of the following statements accurately describes the role of the salivary glands in the digestive process?

The salivary glands secrete enzymes that initiate the chemical digestion of carbohydrates and protect against bacteria. (C) Signup and view all the answers

Which of the following accurately describes the function of the gastric pits and gastric glands in the stomach?

Gastric pits and gastric glands both secrete enzymes for the chemical digestion of proteins. (A) Signup and view all the answers

What is the primary function of the hormone gastrin in the digestive process?

Stimulate the production of gastric juice and increase stomach motility. (D) Signup and view all the answers

Which of the following accurately describes the function of the circular folds (plicae circulares) in the small intestine?

They increase the surface area for nutrient absorption by forming temporary ridges and grooves. (D) Signup and view all the answers

Which of the following accurately describes the two types of digestion that occur in the human digestive system?

Mechanical digestion occurs in the mouth and stomach, while chemical digestion occurs in the small intestine. (D) Signup and view all the answers

Which of the following is the correct order of the steps involved in food nutrient absorption in the small intestine?

Breakdown of food into smaller molecules, absorption into the bloodstream, elimination of waste. (B) Signup and view all the answers

Digestive System Organs Overview

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Questions and Answers

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

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

What is the primary function of the enzyme secretin produced in the duodenum?

What is the primary purpose of the circular folds (plica) in the small intestine?

What is the primary function of the microvilli on the surface of the intestinal cells?

What is the primary purpose of the brush border enzymes found on the microvilli of the small intestine?

What is the main function of the stomach in the digestive system?

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

What is the main function of the salivary glands in the digestive system?

Which part of the small intestine is responsible for the majority of nutrient absorption?

What is the main function of the large intestine (colon) in the digestive system?

What is the main function of the pancreas in the digestive system?

Which of the following is the correct order of the steps involved in food nutrient absorption?

Which of the following is NOT an organ of the alimentary canal?

Where does the mechanical breakdown of food begin?

Which enzyme is present in saliva and aids in the digestion of carbohydrates?

What is the name of the semi-solid mixture of partially digested food and gastric juices that leaves the stomach and enters the small intestine?

Which part of the digestive system is responsible for the absorption of nutrients into the bloodstream?

Which of the following is NOT a function of the circular folds (plicae circulares) in the small intestine?

What is the primary function of the brush border enzymes found on the microvilli of the small intestine?

Which of the following is NOT a function of the salivary glands in the digestive system?

Which of the following is the correct order of the steps involved in food nutrient absorption in the small intestine?

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

Which of the following statements about the stomach is INCORRECT?

Which of the following sequences correctly represents the order of the steps involved in nutrient absorption in the small intestine?

Which of the following statements accurately describes the two types of digestion that occur in the human digestive system?

Which of the following substances is NOT produced by the salivary glands?

Which of the following statements accurately describes the function of the gastric pits and gastric glands in the stomach?

Which of the following statements accurately describes the function of the circular folds (plicae circulares) in the small intestine?

Which of the following statements accurately describes the role of the hormone gastrin in the digestive process?

Which of the following statements accurately describes the role of the salivary glands in the digestive process?

Which of the following accurately describes the function of the gastric pits and gastric glands in the stomach?

What is the primary function of the hormone gastrin in the digestive process?

Which of the following accurately describes the function of the circular folds (plicae circulares) in the small intestine?

Which of the following accurately describes the two types of digestion that occur in the human digestive system?

Which of the following is the correct order of the steps involved in food nutrient absorption in the small intestine?

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