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TISSUE The Living Fabric. Four Types of Tissue Epithelial (protection) Connective (support) Muscle (movement) Nervous (control)

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Presentation on theme: "TISSUE The Living Fabric. Four Types of Tissue Epithelial (protection) Connective (support) Muscle (movement) Nervous (control)"— Presentation transcript:

1 TISSUE The Living Fabric

2 Four Types of Tissue Epithelial (protection) Connective (support) Muscle (movement) Nervous (control)

3 Epithelial Tissue Covering & Lining Epithelium Glandular Epithelium

4 Classified by: Shape Number of Layers

5 Squamous Flattened and Scalelike

6 Cuboidal As tall as they are wide

7 Culumnar Tall, Column-Shaped

8 Arrangement Simple Stratified

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10 Simple Squamous

11 Simple Columnar

12 Stratified Squamous

13 Pseudostratified Squamous

14 Functions of Epithelium Protection Absorption Secretion Sensory Functions

15 Features of Epithelium Cell Junctions are Tight Basement Membrane Avascular (no vessels) Highly Regenerative

16 Covering and Lining Epithelium

17 Location Endothelium: Simple, Reduces Friction (Vessels) Mucous Membranes: Line body cavities that are open to the exterior. (Mouth, Nose)

18 Location Cutaneous Membrane: Skin, Keratinized stratified squamous, dry membrane Serous Membrane: Moist, Closed ventral body cavities, Reduce friction

19 Glandular Epithelium Specialized for Secretion One or more epithelial cells Exocrine: Ducts (Saliva glands, Pancreas) Endocrine: Ductless, Directly into Extracellular Space (Hormones)

20 Connective Tissue

21 General Properties Most abundant and varied of all tissues Primary function: bind the other tissues or the body.

22 Matrix: Nonliving, extracellular material, separates cells of the tissue. Allows tissue to bear weight, tension, and endure abuses

23 Connective tissues develop from embryonic tissue known as MESENCHYME

24 CELLS 1. Fibroblasts: produce fibers and carbs and protein constituents of matrix

25 Chondroblast: Cartilage Osteoblast: Bone Hemocytoblast: Blood

26 FIBERS Collagen – Most abundant – White fibers – Tough, inelastic

27 FIBERS Reticular – Finely branched – Composed of collagen – EX. Basement membrane, small blood vessels

28 FIBERS Elastic – Yellow fibers – Elastin (protein) – Ex. Skin, lungs, vessels

29 Types of C.T. Connective Tissue Proper Two subclasses:

30 Loose connective (areolar, adipose, reticular) Dense connective (Dense regular, Dense irregular, Elastic)

31 Dense regular connective

32 Elastic Cartilage

33 Cartilage : tough yet flexible, avascular – Chondrocytes – Perichondrium: well- vascularized dense irregular connective tissue membrane

34 Bone Main supporting tissue Compact bone & spongy bone Well supplied by blood vessels

35 Blood Blood and lymph are circulating connective tissues Red marrow-blood cells

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37 Muscle Tissue Skeletal: Voluntary control, attached to bone.

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39 Cardiac: Involuntary, Heart, branched cells joined end to end.

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41 Smooth: Involuntary – Lining of organs, vessels

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43 Nervous Functions – Receive stimuli – Transmit info – Control action of muscle and glands

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