1 / 52

Tissues

Tissues. Four Types of Tissues. Epithelial Connective Muscular Nervous. Epithelial Tissue. Epidermal membrane – Skin Serous membrane – linings of the internal cavities (excluding: dorsal cavity and joint cavity)

pak
Download Presentation

Tissues

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Tissues

  2. Four Types of Tissues • Epithelial • Connective • Muscular • Nervous

  3. EpithelialTissue • Epidermal membrane – Skin • Serous membrane – linings of the internal cavities (excluding: dorsal cavity and joint cavity) • Mucous membrane – linings of digestive and respiratory tracks

  4. EpithelialTissue Characteristics • 1. Cells fit close together • 2. Membranes always have one free surface • 3. Cells are attached to a Basement membrane

  5. EpithelialTissue • 4. Avascular – nutrients diffuse from underlying connective tissue • 5. Regeneration is easy if well nourished

  6. EpithelialTissue Types 1. Simple – single layer

  7. EpithelialTissue Types 2. Stratified - Stacked

  8. EpithelialTissue Types 3. Glandular: – in glands used to excrete or secrete solutions

  9. Simple Epithelial Responsible for • Diffusion • Filtration • Secretion • Absorption

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

  11. Simple Epithelial • Simple Squamous Epithelial

  12. Simple Epithelial 2. Cuboidal

  13. Simple Epithelial 3. Columnar • Column shaped • Free surface may have microvilli

  14. Simple Epithelial • Simple Columnar Epithelial

  15. Simple columnar epithelial Simple Epithelial

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

  17. Stratified Epithelial • Passive diffusion is possible • Resistant to damage

  18. Stratified Epithelial 1. Stratified Squamous • Skin • Oral cavity • Pharynx • Vocal chords • Esophagus • Vagina • Anus

  19. Stratified Epithelial • Stratified Squamous Epithelial

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

  21. Stratified Epithelial • Transitional

  22. Glandular Epithelial First type: • Endocrine: • Ductless • Production of hormones released directly into the blood or lymph system

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

  24. Tissue Types • Epithelial • Connective • Muscular • Nervous

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

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

  27. 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)

  28. 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 gell like to hard

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

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

  31. Adipose connective tissue Connective Tissue

  32. Connective Tissue

  33. Blood Erythrocytes and one Leukocyte (monocyte) Connective Tissue

  34. Connective Tissue

  35. Bone Connective Tissue

  36. Connective Tissue • Dense fibrous

  37. Connective Tissue • Hyaline Cartilage

  38. Connective Tissue

  39. Tissue Types • Epithelial • Connective • Muscular • Nervous

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

  41. Muscular Types: • Skeletal – attached to the skeleton multinucleated striated Voluntary

  42. Muscular • Teased Skeletal Muscle

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

  44. Muscular • Cardiac muscle / Involuntary

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

  46. Muscular • Smooth muscle Teased

  47. Muscular

  48. Tissue Types • Epithelial • Connective • Muscular • Nervous

  49. 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

  50. Typical neural cell Nervous Tissue

More Related