KAAP220 Lecture Notes - Lecture 3: Exocrine Gland, Extracellular Fluid, Epithelium

• School: University of Delaware
• Department: Kinesiology & Appl Physiology
• Course: KAAP220
• Professor: Rebecca Lufler

Document Summary

Controls what"s going into or being secreted out of the tissue that the epithelia is covering. Epithelial barrier can be modified in response to stimuli (like calluses if you"re constantly. Protect surfaces from abrasion, dehydration, or destruction by chemical or biological agents. Like skin keeps water in to maintain homeostasis, protects us from abrasion from our clothing working with your hands or feet; from constant abrasion; that"s the response of the epithelial tissue to protect you) Specialized epithelial cells detect changes in environment (like touch receptors) Neuroepithelium - sensory epithelium found in special sense organs: provide sensation, produce specialized secretions, features, surfaces. Faces exterior of body or internal space; the top surface; either going to be exposed to external environment or the lumen if inside a tube. Basolateral surface - includes both base and sides (lateral surfaces) attached to neighboring cells. To function as a barrier, must have intact, complete lining.