Histology
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Transcript of Histology
HistologyHistology
Objective:Objective:
To study different types of tissues To study different types of tissues and identify the followings:and identify the followings:
1- Hyaline Cartilage (C.S)1- Hyaline Cartilage (C.S)
2- Arteries and Veins (C.S)2- Arteries and Veins (C.S)
3- Striated and Cardiac muscles 3- Striated and Cardiac muscles (C.S)(C.S)
4- Neurons and Spinal cord (C.S)4- Neurons and Spinal cord (C.S)
Histology: Microscopic Study of Histology: Microscopic Study of TissuesTissues BiopsyBiopsy: removal of tissues for : removal of tissues for diagnostic purposesdiagnostic purposes
AutopsyAutopsy: examination of organs of : examination of organs of a a deaddead body to determine cause of body to determine cause of deathdeath
Tissues and HistologyTissues and Histology
Major types of adult Major types of adult tissues:tissues:
1- Epithelial 1- Epithelial 2- Connective2- Connective3- Muscle3- Muscle4- Nervous4- Nervous
Number of cell layersNumber of cell layers SimpleSimple StratifiedStratified
Shape of apical surface Shape of apical surface cellscells SquamousSquamous CuboidalCuboidal ColumnarColumnar
Classification of epitheliaClassification of epithelia
Two types:Two types: CartilageCartilage BoneBone
C- Supporting connective C- Supporting connective tissuestissues
Cartilage and bone support the bodyCartilage and bone support the body
1- Cartilage:1- Cartilage: Cells called Cells called chondrocyteschondrocytes Cells found in lacunae Cells found in lacunae (capsules)(capsules) PerichondriumPerichondrium separates cartilage separates cartilage
from surrounding tissuesfrom surrounding tissues Three types: hyaline, elastic and Three types: hyaline, elastic and
fibrocartilagefibrocartilage
Supporting connective Supporting connective tissuestissues
Specialized for Specialized for contractioncontraction Three types:Three types:
Skeletal:Skeletal: attached to attached to bonesbones Cardiac:Cardiac: muscle of the muscle of the heartheart Smooth:Smooth: muscle associated with muscle associated with tubular tubular
structuresstructures
3- Muscle tissue3- Muscle tissue
Conducts electrical impulses.Conducts electrical impulses. Conveys information from one Conveys information from one
area to another.area to another.
4- Neural tissue4- Neural tissue