click below
click below
Normal Size Small Size show me how
Intro to Tissues
3.1, 3.2--Types and Cell Junctions
Term | Definition |
---|---|
Tissue | GROUP OF CELLS WITH COMMON ORIGIN IN EMBRYO AND FUNCTION TOGETHER TO CARRY OUT SPECIALIZED ACTIVITIES |
HISTOLOGY | STUDY OF TISSUES (USING STAINS, ETC.) |
EPITHELIAL TISSUE | LINING; COVERS BODY SURFACES, LINES HOLLOW ORGANS, BODY CAVITIES, AND DUCTS; ALSO FORMS GLANDS. ALLOWS FOR INTERNAL AND EXTERNAL COMMUNICATION |
CONNECTIVE TISSUE | CONNECTS; PROTECTS AND SUPPORTS WHILE BINDING ORGANS TOGETHER |
MUSCULAR TISSUE | CONTRACTION; GENERATION OF FORCE AND HEAT |
NERVOUS TISSUE | ELECTRIC CONDUCTANCE OF INFORMATION |
GAP JUNCTIONS | NARROW INTRACELLULAR GAP BETWEEN CELLS BRIDGED OVER BY PROTEINS CALLED CONNEXINS |
CONNEXINS | MEMBRANE PROTEINS IN GAP JUNCTIONS WHICH CREATE TUNNELS (CONNEXONS) FOR ION TRANSPORT AND ELECTRICAL AND CHEMICAL COMMUNICATION |