5 Written questions
5 Matching questions
- Functions of the Digestive System
- Functions of the Stomach
- Functions of the Oral Cavity
- Chief cells
- a 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.
- b Fingerlike projections, which increase surface area.
- c Secrete Pepsinogen, which is converted to pepsin (a protease enzyme) that breaks down proteins by gastric acid.
- d Mechanical processing: Through actions of teeth and tongue, lubrication: mixing with salivary gland secretions, and some digestion: saliva contains amylase (enzyme that breaks down starches), and lipase (enzyme that breaks down lipids).
- e Ingestion, Mechanical processing, secretion, digestion, absorption, and excretion.
5 Multiple choice questions
- A hollow muscular tube, transports solid food and liquids to the stomach, and passes through the diaphragm muscle to get from the larynx to the abdomen.
- 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.
- Function is ingestion and to transport along the length of the tube, and lined with stratified epithelium for protection.
- G cells and Stem cells.
- Two thick layers of smooth muscles- inner and outer longitudinal, and involved in peristalsis, which is wave-like muscular contractions that move materials along digestive tract, and contains a nerve plexus.
5 True/False questions
Mucosa → Deep to the mucosa, dense irregular connective tissue, and contains large blood vessels, large lymphatic vessels, and large nerves.
Lamina Propria → Deep to the epithelial layer, loose connective tissue, and contains small blood vessels, small lymphatic vessels and lymphoid tissue, and small sensory and motor nerves.
Absorption → Removal of waste products (feces) from body.
Functions of the Small Intestine → Plays a key role in digestion and absorption of nutrients, and 90% of nutrient absorption occurs here.
Submucosa → The inner lining of the digestive tract and consists of its own three layers: epithelium, lamina propria: loose CT, and muscularis mucosae: a thin smooth muscle layer.