Study "DIGESTIVE SYSTEM", a flashcard deck on FORKSAI.
Which of the following is the innermost tunic of the GI tract? A) Serosa B) Muscularis Externa C) Submucosa D) Mucosa
D) Mucosa. The Mucosa is the innermost layer lining the lumen, consisting of epithelial cells, lamina propria, and muscularis mucosus.
Which digestive function involves the passage of building blocks from the GI tract into the blood or lymph? A) Ingestion B) Secretion C) Absorption D) Defecation
C) Absorption. Absorption is the process where digested building blocks pass from the GI tract into the blood or lymph.
Which salivary gland pair is the largest and located just beneath and in front of the ears? A) Sublingual Glands B) Submandibular Glands C) Parotid Glands D) Minor Salivary Glands
C) Parotid Glands. The Parotid Glands are the largest salivary glands, situated just beneath and in front of the ears.
What is the primary function of the gallbladder? A) Produce bile B) Detoxify drugs C) Store and concentrate bile D) Secrete insulin
C) Store and concentrate bile. The gallbladder's main function is to store and concentrate bile received from the liver, releasing it into the small intestine when needed.
Which layer of the GI tract contains the submucosal plexus (Meissner's plexus)? A) Mucosa B) Submucosa C) Muscularis Externa D) Serosa
B) Submucosa. The Submucosa is a thick connective tissue layer that contains arteries, veins, lymphatics, and the submucosal plexus.
The Muscularis Externa is composed of which two layers? A) Epithelial and connective B) Inner circular and outer longitudinal C) Mucosal and submucosal D) Serous and adventitial
B) Inner circular and outer longitudinal. The Muscularis Externa is composed of an inner circular layer, which reduces the diameter of the tract, and an outer longitudinal layer, which shortens the tract.
Which of the following is an exocrine function of the pancreas? A) Secreting insulin B) Producing bile C) Releasing digestive enzymes and bicarbonate D) Storing nutrients
C) Releasing digestive enzymes and bicarbonate. The pancreas's exocrine function involves releasing digestive enzymes like amylase and lipase, along with a bicarbonate solution to neutralize stomach acid.
What is the role of the pharynx in digestion? A) Mastication B) Absorption of nutrients C) Propulsion of food into the esophagus D) Production of digestive enzymes
C) Propulsion of food into the esophagus. The pharynx receives food from the mouth and acts as a muscular structure to move materials into the esophagus.
Which of the following is NOT a primary function of the liver? A) Producing bile B) Storing and concentrating bile C) Synthesizing blood proteins D) Detoxifying drugs
B) Storing and concentrating bile. Storing and concentrating bile is the primary function of the gallbladder, not the liver. The liver produces bile.
Which digestive function involves the physical and chemical breakdown of food? A) Ingestion B) Digestion C) Secretion D) Defecation
B) Digestion. Digestion is the process of breaking down food into smaller molecules that can be absorbed.