Post on 05-Jan-2016
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
Classifications of Classifications of EpitheliaEpithelia
2- Connective Tissues2- Connective Tissues
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
Hyaline CartilageHyaline Cartilage
Figure 4.12g
Elastic CartilageElastic Cartilage
Figure 4.12h
FibrocartilageFibrocartilage
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
Skeletal Muscle TissueSkeletal Muscle Tissue
Cardiac Muscle TissueCardiac 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
T.S. of Spinal CordT.S. of Spinal Cord
Nerve CellNerve Cell