Midterm: Tissue Exam Flashcards
Four main tissues
Epithelial
Muscular
Connective
Nervous
Epithelial
First line of defense:
- Cover and protecting body surfaces/cavities against environment
- Found in lungs, line digestive/respiratory system and skin
Cuboidal
Cub
Squamous
Flat
Columnar
Taller than wide
Simple
Single
Stratified
Layered
Pseudostratified
False layered
Traditional
Change between cuboidal and simple
Muscular tissue
Provide support and power Produce heat Attached to bone Movement requires conscious thought Long, cylinder shaped More than one nuclei per cell Small striations
Smooth muscle
Movement involuntary
No striations
One nucleus
Digestive organs and veins
Cardiac muscle
Heart muscle Involuntary, rhythmic contractions Branching Striated One nucleus
Nervous tissue
Communication with the body Information transfer and processing Receptors Connectors (integrators) Effectors
Connective tissues
Structure/framework Transport Protection of organs Store energy Defense against microbes support and interconnect with other tissue
Matrix
All cells in a matrix
NON LIVING INTRACELLULAR MATERIAL
May be gel, liquid or solid
Elastin fibers
Branched
Let tissue stretch not rip
Return to original length
Collagen fibers
Strong, dense, rubbery, unbranched
Reticular fibers
Loose, spread out
Loose connective tissue
Few cells in matrix
More elastin than collagen=flexible
Found where skin attaches to muscle
Surrounds organs
Dense connective tissues
More collagen than elastin
Two types:
1. Irregular- go in all directions, provide support
2. Regular- fibers parallel
Bone to bone-ligament
Bone to muscle-tendon
