18 Questions
What is the function of the lower esophageal sphincter in the digestive system?
To control the entrance of food into the stomach
What is the longest part of the digestive system?
Small intestine
What is the functional unit of absorption of food in the small intestine?
Villi
What is the primary function of the large intestine?
To absorb water from undigested food
What is the process by which feces are carried to the rectum?
Peristalsis
What is the final point of exit for waste products in the digestive system?
Anus
What is the primary function of the esophagus?
To pass food from the pharynx to the stomach
What is the role of hydrochloric acid in the stomach?
To mix with food and aid in the chemical digestive process
What is the term for the involuntary muscle contractions that move food through the digestive tract?
Peristalsis
Where is the stomach located in the body?
Upper left quadrant of the abdominal cavity
What is the function of the rugae in the stomach?
To contain gastric glands that secrete gastric juice and HCl
What is the role of pepsinogen in the stomach?
To break down proteins into amino acids
What is the primary function of the villi in the small intestine?
Absorption of nutrients into the bloodstream
Which layer of the digestive tract contains blood vessels, lymphatic vessels, and nerves?
Submucosa
What is the process by which the body eliminates waste products from the digestive system?
Excretion
What is the main function of the salivary glands in the digestive system?
Secretion of saliva into the oral cavity
What is the outermost layer of the digestive tract composed of?
Connective tissue
What is the process by which food molecules are broken down into smaller parts that can be absorbed by the body?
Digestion
Learn about the key structures of the digestive system, including the stomach, sphincters, and small intestine. Understand how they control the flow of food and facilitate digestion.
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