29 Questions
What is the function of the stomach in the digestive system?
Mix food with chyme
Which organ releases intrinsic factor for vitamin B12 absorption in the small intestine?
Stomach
What is the primary function of the small intestine?
Absorb macro and micro nutrients
Which accessory organ produces bile salts to emulsify lipids for digestion?
Liver
What is the last voluntary act before defecation in the digestive process?
Swallowing
Which process exposes a larger surface area of food to digestive juices?
Mastication
What is the primary function of the tongue?
To facilitate dynamic movement and taste perception
Which of the following statements about saliva is incorrect?
Saliva production increases during sleep.
What is the function of the epiglottis?
To prevent food from entering the trachea during swallowing
Which of the following is NOT a type of tooth?
Bicuspids
What is the function of the pharynx?
To handle the passage of both food and air through involuntary muscle contractions
Which part of the tooth contains nerves and blood vessels?
Pulp cavity
Which of the following statements about the small intestine is correct?
It contains the duodenum, jejunum, and ileum regions.
What is the function of the duodenal glands?
To secrete bicarbonate-rich alkaline mucous.
Which of the following statements about peristalsis is correct?
It is the process that moves chyme through the small intestine, initiated by the hormone motilin.
Which region of the small intestine is the longest and has the most mucosal folds?
Ileum
What is the purpose of segmentation in the small intestine?
To mix chyme with digestive juices and force particles toward the mucosa for absorption.
What is the primary function of the gastric phase during digestion?
To prepare the stomach for food entry by stretching and lowering pH
Which of the following is NOT part of the mucosal barrier that protects the stomach from self-digestion?
Presence of stomach-digesting enzymes
What are the two main causes of stomach ulcers?
NSAID use and H. pylori bacterial infection
Which of the following statements about stomach emptying is correct?
Carbohydrates empty fastest, followed by high-protein foods
What is the significance of intrinsic factor produced by the stomach?
It is the one function essential for life, producing red blood cells and maintaining neurological function
Which of the following statements about the mechanical digestion in the stomach is correct?
Gentle and intense waves move from the body toward the pylorus, forcing small amounts of chyme into the duodenum
Which of the following is NOT a function of bile secreted by the liver?
Digestion of proteins in the small intestine
What is the primary reason for the production of methane gas in the chemical digestive process?
Breakdown of indigestible sugars by bacteria
Which of the following statements about the Valsalva maneuver is correct?
It is a voluntary procedure to increase intra-abdominal pressure for defecation
What happens if defecation is delayed for too long?
More water is absorbed, causing feces to become firmer and leading to constipation
Which organ is responsible for producing both bile and digestive enzymes?
Pancreas
What is the primary function of hepatocytes in the liver?
Processing of nutrients, drugs, and toxins
Test your knowledge on the functions of the digestive system, including the stomach and small intestine. Learn about how food is processed, absorbed, and broken down in the human body.
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