Epithlium Tissue Flashcards
Characteristics of Epithelium Tissue
Always has a free too or Apex (nothing sits on top of it)
Cellularity- Made up of tightly packed cells
Avascular- but has nerves (innervation)
Frequently replaced (regenerative)
Can have Cilia and Microcilli
Simple Squamous Location
Line inside of all blood vessels (endothelium, endo=inside)
Lines inside of the heart
Lines the walls of capillaries and are responsible for feeding tissue and alveoli
Simple Squamous Function
Diffusion
Simple Cuboidal Location
Kidney tubulesand ducts of some glands (salivary, thyroid, pancreas, and liver)
Glands
ABSORPTION AND EXCRETION
Simple Cuboidal Function
Secretion and sometimes absorption
Simple Columnar Function
A big absorber, and cilia help move things
Simple Columnar Location
Line uterus/Fallopian tubes, stomach, and intestines
Psudostratified Columnar Function
Sweep debris out of lungs, goblet cells produce mucin (white, runny, clear), histamine (released by WBCs causes goblet cells to increase activity)
Psudostratified Columnar Location
ONLY found in lining of upper respiratory tract (trachea, bronchi, and bronchioles)
Stratified Squamous Function
Wear and tear tissue, made to take lots of low energy friction, exposure to the environment, protect us from fluid loss and invasion
Stratified Squamous Location
Outer layer of skin, and lines the mouth, throat, vagina, and Anal canal
Connective tissue characteristics
Most common tissue More matrix than cells Fibers running through matrix Holds things together and provides structure and support Vascularity varies
Cartilage characteristic
Firm matrix Avascular Chondrocytes live in little pools because of the firm matrix called lacunae No room for nerves Perichondrium surrounds cartilage
Hyaline cartilage characteristics
Toughest cartilage there is
Wear and tear cartilage
Found between
White and leaded with collagen fiber
Hyaline cartilage location
Nose, trachea, bronchioles tubes, and connecting ribs to sternum
Fibrocartilage Characteristics
Alternating rows of cells, matrix, and fibers
Forms disc of the knee mechanisms, intervertebral discs, and pubic symphysis
Elastic Cartilage
Strong like hyaline but can return to its original shape after extreme bending
External ears, epiglottis
Ring of cells
Lamella
Tony canals that carry nutrients from one lacunae to another
Canalicali
Haversian Canal
Carries blood vessels and nerves to the group of Lamella
Volkmann’s Canal
Travel at right angles connecting medullary cavity
Loose areolar
Lots of space for blood vessels
Very vascular
Can take in edema
Found under skin (cushions)
Adipose
Vacuole stores triglycerides
Very vascular
Loose reticular
Makes up framework of non-hollow organs like spleen, liver, lymph nodes
Lots of WBCs
VERY VASCULAR
PART OF LYMPH SYSTEM
