GI Histology 1 | Study Guide

University:
Kentucky State University
Course:
BIO 301 | Human Anatomy
Academic year:

2021
Views:

484

Pages:

21
Author:

Hallie Randolph

GI Histology 1 Objectives • Describe the cells of the GI tract and their function • Describe the histological features of each part of the GI tract. • Differentiate between different parts of the GI tract • Appreciate the histopathology of the GI tract • Describe the histological basis of some clinical problems • The student should identify the following: 1. The parts of the digestive system 2. Each part’s functions General Structure of the Digestive Tract • The student should identify the common structural characteristics of the gastrointestinal tract • It is a hollow tube composed of a lumen surrounded by a wall made up of four principal layers: 1. the mucosa 2. Submucosa 3. muscularis 4. Serosa ❖ (the student should know the characteristics of each layer) Basic mucosal forms in the GI tract • The student should know the basic mucosal forms in the GI tract and examples on each one of them: 1. Protective 2.Seceretory 3. Absorptive 4. Absorptive/protective The Oral Cavity • The student should know the following: ➢ 1. 2. 3. 4. 5. 6. lining of all parts of the oral cavity gingiva (gum) hard palate soft palate lips cheeks floor of the mouth. Tongue • The student should know the following: 1. the main tongue’s structures by which they vary according to the region a. the lower (ventral) surface of the tongue b. The tongue's dorsal surface • The student should know the following: The difference between the posterior onethird of the ventral surface of the tongue and the anterior twothirds of the ventral surface of the tongue. Papillae • The student should know the following: • 1. What are the types of the papillea and their functions A. Filiform Papillae B. Fungiform Papillae C. Foliate Papillae D. Circumvallate Papillae Taste buds Salivary Glands • The student should know the following: 1. what is saliva 2. Types of the large salivary glands, main characteristics and their functions a. Parotid b. submandibular (submaxillary) c. sublingual glands Parotid Gland Submandibular (Submaxillary) Gland Sublingual Gland • The student should know the following: 1. The capsule that surrounds the large salivary glands. 2. The parenchyma of the glands 3. types of The secretory end pieces 4. duct system • The student should differentiate between the following: 1. The Serous cells and the mucous cells shapes, characteristics and functions. 2. Between the acini and tubules Myoepithelial cells • The student should know the following: • 1. what are the Myoepithelial cells (basket cells) • 2. their function • The student should differentiate between the following: • the intercalated ducts and the striated ducts • Their lining • The student should know the following: • 1. the type of the glands’ stimulation • 2. the sight of the vessels and nerves entrance in the large salivary glands Minor Salivary Glands • The student should know the following: • 1. what are the minor salivary gland • 2. What kind of secretions they produce