Contains learning targets from chapter 4 (histology, tissue repair, regeneration, etc.) for the final
Striated Muscles
Skeletal and Cardiac
Involuntary Muscles
Cardiac and Smooth
3 Fibers in Connective Tissue
Collagen: strongest
Elastic: stretch/flexible
Reticular: form networks
6 Characteristics of epithelium
Closely packed cells
Lines lumens (openings)
regenerate quickly
protects
supported by connective tissue below
has nerves, but avascular (NO blood supply)
Polarity of Cells
Apical=top
Basal=bottom
Cilia Function
Moves stuff
Cilia Location
Respiratory
Microvilli Function
Absorb
Microvilli Location
Digestive
Connective tissue components
Fluid
Proteins
Sugars
Extracellular Matrix structure
Ground substance+Fibers=Extracellular Matrix
Extracellular Matrix function
provides structure and communication between cells
Lacuna
air pockets where cells reside, especially noticeable in elastic cartilage
Striated
Layers/stripes seen in cardiac and skeletal muscle
Intercalated Discs
Seperate cells, and allow cells to communicate in order to keep rhythm
4 cardinal signs of Inflammation
Redness
Swelling
Pain
Heat
Tissue Repair steps
inflammation
organization
regeneration/fibrosis
Inflammation (1st step)
Release histamines
-causes blood flow to area (more O2)
-bring in antibodies, fluid, proteins=pus
Inflammation (2nd step)
Blood clot formed
Inflammation (3rd step)
Form scab from fibers
Organization (1st step)
Blood clot is replaced with granulation tissue
-includes blood vessels
-fibroblasts
-pulls the wound together
Organization (2nd step)
White blood cells break down old material
Regeneration (definition)
Replacement of tissue with the same type
Fibrosis (definition)
Replacement of tissue with scar tissue
-canโt perform original task
-mostly collagen
-no blood supply (why itโs white)
Good Regeneration ability
epithelium
bone
blood
Poor Regeneration ability
Muscle
Cartilage
Bad Regeneration ability
Nervous
Cardiac Muscle
Why do some tissues regenerate better than others?
more frequent mitosis because of a large number of stem cells in the lower layers