KINE 2031 Lecture Notes - Cell Nucleus, Catecholamine, Histology

• School: York University
• Department: Kinesiology & Health Science
• Course: KINE 2031
• Professor: Neil Smith

Document Summary

Tissues: groups of similar cells and extracellular products that carry out a common function, such as providing protection or facilitating body movement. Tissues are formed from the three primary germ layers (ectoderm, mesoderm, and endoderm). The 4 tissue types vary in structure, function of their specialized cells and the presence of the ecm. Histology: the study of tissues and their relationships within organs. Basement membrane: a thin extracellular layer that physically separates the epithelial tissue from the underlying connective tissue. Lamina and reticular lamina. acts as a regulator for movement of molecules to the deeper connective tissue acts to anchor epithelium to the underlying connective tissue. Functions: epithelia may have several functions, although no single epithelium performs all of them. Physical protection/barrier: epithelial tissues protect both exposed and internal surfaces from dehydration, physical, mechanical or chemical injury. i. e. skin - in severe burns, dehydration is a primary concern.