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ok Anatomy - Chapter 4 histology

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Histology
study of living tissues
Pathology
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basement membrane
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Avascular
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Squamous
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Cuboidal
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Columnar
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Transitiona
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simple epithelium
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stratified epithelium
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Pseudostratified columnar epithelum
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Microvilli
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Microvilli
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Cilli
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Goblet Cell
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Gland
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skeletal muscle
description: Long, cylindrical, Multinucleate(2 + nuclei) Striated (banded appearance)

Function: Muscles contract, pull on bones or skin and cause body movement

Location In body: Attached to skeleton

Other feature: Voluntary control
Cardiac muscle
Description: Striated, Uninucleate (1 nucleus) Branching cells fit at Junctions called intercalated cells

Function: Propel blood through blood vessels to all parts of the body

Locations in the body: walls of the heart

Other features: involuntary control
smooth muscles
Description: No visible Striations, 1 central Nucleus, spindle shaped (pointed ends)

Function: Propel Substances Through Hallow organs

Location: Walls of organs (stomach, bladder, uterus, blood, vessels, ect)

Other feature: Contracts slowly, Involuntary controll
3 types of muscle tissue
skeletal cardiac smooth
Striations
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Nervous Tissue
Main Component of nervous system

Neuron = Dendrite + cell body +axon

Function: Regulates and controls body functions

location Brain, spinal cord, nerves
2 cell types
Neurons and Other cells
Neurons
Responsd to stimuli
Transmit electrical current
Other cells
Support insulate and protect neurons
tissue repair
wound healing two ways
Regeneration: Replaces Destroyed tissue by same kind of cell

Fibrosis: Form scar tissue (dense fibrous connective tissue)

Depends on type of tissue damage and the severity of injury
steps of tissue repair
1 Inflammation
2 Granulation
3 Regeneration
Inflammation
.Capillaries become permeable
.wbc's and clotting proteins seep into injured area
.Clot prevents loss of blood(surface dries)
granulation tissue
.Soft, pink, fleshy projections of tissue that form during the healing process in a wound
.produces collagen fibers
.epithelial cells multiply over granulation tissue
Regeneration
Surface epithelum regenerates
fibrous tissue matures - forms scar tissue
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