Epithelial TissuesConnective Tissues
andThe Integument
Epithelial TissuesExcercise 8
Tissue - A aggregate of with similar structure and function.
Histology - The science that studies tissues.
Epithelial Tissue – Groups of cells that are
Protective Absorptive Secretory Transport Excretory Closely attached to each other to form tight sheets
lacking in extracellular matrix and vascularization. Cells rest on basal lamina which in turn rests on
connective tissue. Free on one end (Apical Surface).
Epithelial Tissue
Simple Pseudostratified Stratified
Ciliated Nonciliated
Squamous Squamous Cuboidal Columnar
Columnar Transitional
Ciliated Nonciliated
Simple Squamus
Simple Cuboidal
Ciliated Columner
Pseudo Stratified
Stratified Squamus
Stratified Transitional
Connective Tissue Perform binding, support ,transport and nutritive functions
Connective tissue has three types of fibers
Collagenous (white) Fibers –Relatively large, thick bundels.
Reticular Fibers - Minute network of very fine threads stains well so it looks black.
Elastic (yellow) Fiber- contains elastin protein. Found in organs and tissues that must yield to changes in shape.
Connective Tissue Matrix
Ground SubstanceAn amorphous solution or gel around the cells and fibers
Extra cellular fluid consisting of fibers, fluids, ground substance and or inorganic compounds form the connective tissue matrix.
Cell types seen in matrix are fibroblasts, adipose cells, mast cells, plasma cells, macrophages and other types of blood cells.
Connective TissueConnective Tissue Proper Special Connective Tissue Loose Fibrous (Areolar) Hemopoietic (Blood-Forming)
Dense Fibrous Regular Support Irregular Cartilage Hyaline Reticular Elastic Adipose Fibrocartilage
Bone Compact
Spongy
Areolar Connective Tissue
Dense FibrousRegular Irregular
Reticular
Adipose
Blood
Hyaline Cartilage