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