5 Written questions
5 Matching questions
- Lamina Propria
- Functions of the Small Intestine
- a Plays a key role in digestion and absorption of nutrients, and 90% of nutrient absorption occurs here.
- b Waves of muscular contractions that moves a bolus along the length of the digestive tract. Circular smooth muscle layer behind bolus, longitudinal smooth muscle layer ahead of boys contracts: shortening adjacent segments, and wave of contraction in circular muscles: forces bolus forward.
- c 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.
- d Columnar epithelial cell lining the villi contain this, which increase surface area.
- e The outer lining of the digestive tract, composed of simple squamous epithelium, and loose connective tissue.
5 Multiple choice questions
- Contains sensory neurons that sense muscle stretch, motor neurons (sympathetic and parasympathetic) that coordinate peristalsis, and innervates this muscular layer.
- G cells and Stem cells.
- Duodenum, Jejunum, and Ileum.
- Mucous cells, Parietal cells, and Chief 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
Muscularis Mucosae → 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.
Oral Cavity, Pharynx, Esophagus, and Anus Surface Epithelium → Function is digestion and absorption, and are lined with simple columnar epithelium for rapid transport across the epithelial lining.
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.
Pharynx → A common passageway for solid food, liquids, and air that is shared by the digestive and respiratory systems, and food passes through this to the esophagus.
Digestion → The chemical breakdown of food into smaller fragments.