Q2. Describe the basic four layers of the wall of thedigestive tract. Be sure to include tissue types found there andthe function of the layer.
Mucosa – Absorption and secretion
- Epithelium
- Lamina Propria
- Muscularis mucosae
Submucosa – Supports mucosa
Muscularis Externa – Motility that propels food and residualthrough the digestive tract
- Inner circular layer
- Outer longitudinal layer
Serosa – Secretion of fluid that reduces the friction from themuscle movement
- Areolar tissue
- Mesothelium
Q3. Though that basic pattern above is followedthroughout most of the digestive tract, there are a few placeswhere we see deviations. Identify two areas with variations in thispattern and describe the differences seen.
