5 Written questions
5 Matching questions
- Regions of the Small Intestine
- Muscularis Mucosae
- Functions of the Stomach
- Mucous cells
- a Deep to the lamina propria, a thin layer of smooth muscle cells, and muscle contraction causes movement of the mucosa.
- b Duodenum, Jejunum, and Ileum.
- c Storage of ingested food, sterilization of ingestive food, some digestion: mechanical breakdown of ingested food by churning; chemical breakdown of food material: by acids and enzymes, and some absorption of alcohol and aspirin.
- d Secrete mucus for protection.
- e The outer lining of the digestive tract, composed of simple squamous epithelium, and loose connective tissue.
5 Multiple choice questions
- Plicae, Vili, and Microvilli.
- Function is ingestion and to transport along the length of the tube, and lined with stratified epithelium for protection.
- Occurs when materials enter digestive tract via the mouth.
- The last segment of the small intestine, about 12 feet long, and ends at the Ileocecal valve: controls the flow from the small intestine into the large intestine.
- Bordered by superiorly by the diaphragm, bordered inferiorly by the pelvic cavity, and lined by the peritoneum a serous membrane.
5 True/False questions
Plicae → Folds in the intestinal lining, which increase surface area and are covered with villi.
G cells → Release the hormone Gastrin, which stimulates secretions by parietal and chief cells.
Submucosal Nerve Plexus → Contains sensory neurons that sense muscle stretch, motor neurons (sympathetic and parasympathetic) that coordinate peristalsis, and innervates this muscular layer.
Villi → The last segment of the small intestine, about 12 feet long, and ends at the Ileocecal valve: controls the flow from the small intestine into the large intestine.
Chief cells → Secrete Pepsinogen, which is converted to pepsin (a protease enzyme) that breaks down proteins by gastric acid.