Types of Tissue

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

1

Properties of Epithelia

•Cellularity•Polarity•Avascularity•Regeneration

2

Cuboidalepithelium

Simple columnarepithelium

Simple squamousepithelium

Pseudostratifiedcolumnarepithelium

Stratified squamousepithelium

Epithelial Tissue

3

Apical surface

Basal surface

Basal lamina

40

m

Polarity of epithelia

4

5

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Squamous Cuboidal Columnar

Simple

(a) Classes of epithelium

Pseudostratifiedcolumnar

Stratified

(b) Cell shapes

6

7

8

9

10

11

12

13

14

15

Constituents of Connective Tissues

1. CellsA. BlastsB. CytesC. Clasts

2. Extracellular MatrixA. Ground SubstanceB. Fibers

I. CollagenousII. ElasticIII. Reticular

16

Blood

Connective Tissue

Plasma

Whiteblood cells

55

m

Red blood cellsCartilage

Chondrocytes

Chondroitin sulfate

10

0

m

Adipose tissue

Fat droplets

15

0

m

Bone

Centralcanal

Osteon

70

0

m

Nuclei

Fibrous connective tissue

Elastic fiber

30

m

12

0

m

Collagenous fiber

Loose connective tissue

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

Muscle Tissue

Skeletal muscleNuclei

Musclefiber

Sarcomere

100 m

Smooth muscle Cardiac muscle

Nucleus Muscle fibers 25 m Nucleus Intercalated disk 50 m

34

35

36

37

38

Nervous Tissue

Neurons

Neuron:Dendrites

Cell body

Axon

(Fluorescent LM)

40

m

Glia Glia

Axons ofneurons

Bloodvessel

(Confocal LM)

15 m

39

40

41