1. Introduction TISSUE Vs.

2. Terminology  epi-  -crine  macr-  erythro-  leuko-  thrombo-  intra-  Derm-  Histo-  chondro-  oss-  vas-  hyal-  sub-  pseudo: false, fake  stratum: layers

3. Introduction: Levels of organization Seven levels of organization? Please write them by INTRODUCTION.

4. What are tissues?

5. Tissues are cells that are organized into groups and layers. All can have different forms, which means… (?)

6. Four types of tissue:

7. Types of Tissues 1.Epithelial-covers 2.Connective-connect/support (most abundant) 3.Muscle-movement 4.Nervous-control

8. Epithelium: Covers the body, most organs and has a free surface to external and internal spaces.

9. Characteristics 1.High rate of regeneration 2.Usually avascular (no blood supply) 3.Attached to the basement membrane

10. Functions 1.Protection 2.Absorption 3.Receive stimuli 4.Form smooth surfaces 5.Secretion: exocrine, endocrine

11. TYPES Epithelial cells are classified by shape and number of layers. Squamous, Cubodial, and Columnar Simple vs stratified

13. Types Simple: one layer, usually diffusional, ciliated and/or grandular. 1. Squamous 2. Cubodial 3. Columnar 4. Pseudostratified

14. SIMPLE SQUAMOUS - Flat thin cell - Simple (1 layer) -Found: -Linings of lungs -Inside of blood vessels -Line body cavities (mouth) -Outer layers of skin.

15. SIMPLE CUBOIDAL -Cube shaped cells -Simple (1 layer thick) -Found: -Lining of ovaries -Kidney tubules -Ducts: (pathways of glands, sweat glands)

18. SIMPLE COLUMNAR -Column shaped -Simple (1 layer) -Ciliated Found: -Female tubes -Non-Ciliated -Lines the stomach and intestines.

19. 4. Pseudo stratified : false or fake stratified, looks like more than 1 layer because it has cilia and goblet cells.

20. Stratified: more than 1 layer, could be more than 1 kind of shape, it’s named from the top layer.

21. STRATIFIED SQUAMOUS – Thick for protection -Stratified (layered) - Found: -Skin -Esophagus -Oral Cavity

22. STRATIFIED CUBODIAL - Thick for protection Stratified (layered) Found: –Mammary glands –Sweat glands –Salivary glands –Pancreas

23. Stratified Columnar Usually found on top of cubodial. Found: Vas deferens, urethra, pharynx

24. Transitional -look different upper cells able to change shape. - Tissues that expand and contract. - Found in urinary track.

27. 1. Exocrine: secreted onto the surface of the skin and/or digestive track. Ex. Sweat, enzymes, milk Grandular: secretes

28. 2. Endocrine: secreted into the surrounding tissues and blood. aka. Hormones (which regulate cells, tissues, organs) Pseudocrine (ductless goes to blood into capillaries)