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Tissues. Four Types of Tissues  Epithelial  Connective  Muscular  Nervous.

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Presentation on theme: "Tissues. Four Types of Tissues  Epithelial  Connective  Muscular  Nervous."— Presentation transcript:

1 Tissues




5 Four Types of Tissues  Epithelial  Connective  Muscular  Nervous

6 Epithelial Tissue Epidermal membrane – Skin Serous membrane – linings of the internal cavities (excluding: dorsal cavity and joint cavity) Mucous membrane – linings of digestive and respiratory tracks

7 Epithelial Tissue Characteristics 1. Cells fit close together 2. Membranes always have one free surface 3. Cells are attached to a Basement membrane

8 Epithelial Tissue 4. Avascular – nutrients diffuse from underlying connective tissue 5. Regeneration is easy if well nourished

9 Epithelial Tissue Types 1. Simple – single layer

10 Epithelial Tissue Types 2. Stratified - Stacked

11 Epithelial Tissue Types 3. Glandular: – in glands used to excrete or secrete solutions

12 Simple Epithelial Responsible for Diffusion Filtration Secretion Absorption

13 Simple Epithelial 1. Squamous Flat Used in filtration Rapid diffusion of gas into solution

14 Simple Epithelial Simple Squamous Epithelial

15 Simple Epithelial 2. Cuboidal

16 Simple Epithelial 3. Columnar –Column shaped –Free surface may have microvilli

17 Simple Epithelial Simple Columnar Epithelial

18 Simple Epithelial Simple columnar epithelial

19 Simple Epithelial 4. Pseudostratified –All cells attached to the basement membrane, may have cilia on the free surface

20 Stratified Epithelial Passive diffusion is possible Resistant to damage

21 Stratified Epithelial 1. Stratified Squamous –Skin –Oral cavity –Pharynx –Vocal chords –Esophagus –Vagina –Anus

22 Stratified Epithelial Stratified Squamous Epithelial


24 Stratified Epithelial 2. Transitional –All squamous Example: Bladder – expands to hold up to 1 liter of fluid

25 Stratified Epithelial Transitional


27 Glandular Epithelial First type:  Endocrine: Ductless Production of hormones released directly into the blood or lymph system

28 Glandular Epithelial Second type:  Exocrine: Retain their ducts Release of material on an epithelia membrane Ex. Sweat, oil, mammary

29 Tissue Types  Epithelial  Connective  Muscular  Nervous

30 Connective Tissue Most abundant and widely spread Found in all parts of the body as a discrete structure or as a body organ

31 Connective Tissue Functions: Protect – bones and adipose (insulate / pad) Support - bones Bind together – ligaments and tendons

32 Connective Tissue Characteristics 1. well vascularized (few exceptions – cartilage / ligament / tendons) 2. composed of different types of cells 3. contains a matrix (non living material between cells)

33 Connective Tissue Matrix: 1.Produced by the cells then extruded 2. Responsible for strength associated with the tissue 3. Consistency may range from liquid to semisolid to gel like to hard

34 Connective Tissue Matrix 4. Range Hemopoietic and adipose –mostly cells Dense – bone and cartilage – mostly matrix

35 Connective Tissue Matrix 5. Matrix fibers Collagenic (white) fibers Elastic (yellow) fibers Reticular (fine collagenic) fibers

36 Connective Tissue Adipose connective tissue

37 Connective Tissue

38 BloodBlood –Erythrocytes and one Leukocyte (monocyte)

39 Connective Tissue

40 Bone

41 Dense fibrousDense fibrous

42 Connective Tissue Hyaline CartilageHyaline Cartilage

43 Connective Tissue


45 Tissue Types  Epithelial  Connective  Muscular  Nervous

46 Muscular Tissue that has the ability to contract and relax to provide movement through space.

47 Muscular Types: 1.Skeletal – attached to the skeleton multinucleated striated Voluntary

48 Muscular Teased Skeletal MuscleTeased Skeletal Muscle

49 Muscular Cardiac Muscle : 1. only found in the heart 2. Multinucleated 3. Striated 4. Intercalated disks at tight junctions

50 Muscular InvoluntaryCardiac muscle / Involuntary

51 Muscular Smooth MuscleSmooth Muscle : Visceral Found Inside the walls of hollow organs and blood vessels. Unlike the other two types of muscles No striations & uninucleated

52 Muscular Smooth muscle Teased

53 Muscular


55 Tissue Types  Epithelial  Connective  Muscular  Nervous

56 Nervous Tissue Cells are called Neurons Cell structure is unique from all other cells in the body Cells migrate Used for the conduction of impulses Length varies from 1mm to 1 meter


58 Nervous Tissue Typical neural cell

59 Nervous Tissue Lower brain stem

60 Nervous Tissue Cerebral cortex



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