APK 2100C Lecture Notes - Lecture 3: Basal Lamina, Trachea, Bronchus

• School: University of Florida
• Department: Applied Physiology and Kinesiology
• Course: APK 2100C
• Professor: Ahlgren Joslyn Korrin

Document Summary

Cells in continuous sheets (single or multiple layers) Cells closely packed and tightly held together (minimal extracellular matrix) Function: high cellularity special contacts polarity (apical and basal surface) support by connective tissue basement membrane: basal lamina secreted by epithelium reticular lamina in underlying connective tissue avascular regeneration nervous innervation. Glandular epithelium in most glands of body (sweat, milk, pituitary, etc. ) Simple squamous epithelium single layer, central nuclei allow passage of materials by diffusion and filtration located in kidney glomeruli, lining heart and vessels, air sacs of lungs, serosae. Simple cuboidal epithelium single layer cubelike cells, large central nuclei secretion and absorption located in kidney tubules, ducts of glands, ovary surface. Simple columnar epithelium single layer tall cells with oval nuclei; may have cilia or goblet cells absorption; secretion; ciliated will propel non-ciliated located in digested tract, gallbladder, excretory ducts ciliated lines small bronchi, uterine tubes.