types of tissue properties of epithelia...types of tissue •epithelial tissue •connective tissue...

Types of Tissue

• Epithelial Tissue • Connective Tissue • Muscle Tissue • Nervous Tissue

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Properties of Epithelia

• Cellularity • Polarity • Avascularity • Regeneration

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Cuboidal epithelium

Simple columnar epithelium

Simple squamous epithelium

Pseudostratified columnar epithelium

Stratified squamous epithelium

Epithelial Tissue

3

Apical surface

Basal surface Basal lamina

40 µ

m

Polarity of epithelia

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Squamous Cuboidal Columnar

Simple

(a)   Classes of epithelium

Pseudostratified columnar

Stratified

(b)  Cell shapes

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Constituents of Connective Tissues 1.  Cells

A. Blasts B. Cytes C. Clasts

2.  Extracellular Matrix A. Ground Substance B. Fibers

I.  Collagenous II.  Elastic III. Reticular

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Blood

Connective Tissue

Plasma White blood cells

55 µ

m

Red blood cells Cartilage

Chondrocytes

Chondroitin sulfate

100 µ

m

Adipose tissue

Fat droplets

150 µ

m

Bone

Central canal

Osteon

700 µ

m

Nuclei

Fibrous connective tissue

Elastic fiber

30 µ

m

120 µ

m

Collagenous fiber

Loose connective tissue

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Muscle Tissue

Skeletal muscle Nuclei

Muscle fiber Sarcomere

100 µm

Smooth muscle Cardiac muscle

Nucleus Muscle fibers 25 µm Nucleus Intercalated disk 50 µm

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Nervous Tissue

Neurons

Neuron: Dendrites

Cell body

Axon

(Fluorescent LM)

40 µ

m

Glia Glia

Axons of neurons

Blood vessel

(Confocal LM)

15 µm

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