#1
Which organ is primarily responsible for digesting food?
Stomach
ExplanationStomach is primarily responsible for digesting food through acid secretion and muscular contractions.
#2
What is the main function of the large intestine?
Absorption of water
ExplanationThe main function of the large intestine is the absorption of water and electrolytes from indigestible food matter.
#3
Which of the following is a function of the esophagus?
Transportation of food to the stomach
ExplanationThe esophagus functions to transport food from the mouth to the stomach via peristaltic contractions.
#4
What is the name of the ring-like muscle that controls the opening between the esophagus and stomach?
Cardiac sphincter
ExplanationThe cardiac sphincter, also known as the lower esophageal sphincter (LES), controls the opening between the esophagus and stomach to prevent reflux.
#5
Which enzyme is responsible for breaking down carbohydrates in the mouth?
Amylase
ExplanationAmylase, produced in the salivary glands and pancreas, breaks down carbohydrates into sugars in the mouth and small intestine.
#6
What is the term for the wavelike contractions of the muscles in the digestive tract that propel food forward?
Peristalsis
ExplanationPeristalsis is the wavelike contraction of muscles in the digestive tract that propels food forward and aids in digestion.
#7
Which of the following enzymes is responsible for breaking down proteins?
Pepsin
ExplanationPepsin is an enzyme secreted by the stomach that breaks down proteins into peptides.
#8
What is the primary function of bile in digestion?
Emulsify fats
ExplanationBile emulsifies fats, breaking them down into smaller droplets to aid in digestion.
#9
Which hormone stimulates the release of digestive enzymes and bile?
Gastrin
ExplanationGastrin stimulates the secretion of gastric acid, enzymes, and bile to aid in digestion.
#10
What is the main function of probiotics in gastrointestinal health?
Improve digestion and gut health
ExplanationProbiotics are beneficial bacteria that improve digestion and maintain gut health by balancing intestinal flora.
#11
Which nutrient is primarily absorbed in the duodenum?
Fats
ExplanationThe duodenum is primarily responsible for the absorption of fats along with other nutrients.
#12
Which of the following conditions is characterized by the presence of small pouches in the colon that become inflamed?
Diverticulosis
ExplanationDiverticulosis is characterized by the presence of small pouches in the colon wall that can become inflamed or infected, leading to diverticulitis.
#13
What condition is characterized by inflammation of the colon?
Ulcerative colitis
ExplanationUlcerative colitis is a chronic inflammatory bowel disease that causes inflammation and ulcers in the colon.
#14
What is a common symptom of irritable bowel syndrome (IBS)?
Constipation
ExplanationConstipation is a common symptom of irritable bowel syndrome (IBS), along with diarrhea and abdominal pain.
#15
Which of the following is not a risk factor for developing gastroesophageal reflux disease (GERD)?
High-fiber diet
ExplanationA high-fiber diet is not typically considered a risk factor for developing gastroesophageal reflux disease (GERD).
#16
Which of the following is not a symptom of celiac disease?
Increased appetite
ExplanationIncreased appetite is not a common symptom of celiac disease; instead, symptoms typically include diarrhea, weight loss, and malabsorption issues.
#17
Which condition is characterized by inflammation of the liver?
Cirrhosis
ExplanationCirrhosis is a late stage of scarring of the liver caused by many forms of liver diseases and conditions, such as hepatitis and chronic alcoholism.
#18
Which condition is characterized by inflammation of the lining of the stomach?
Gastritis
ExplanationGastritis is the inflammation of the stomach lining, often resulting from infection, alcohol, NSAIDs, or stress.