1. Introduction
TISSUE
Vs.

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

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

4. What are tissues?

5. What are tissues?
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 Epithelial-covers
Connective-connect/support (most abundant)
Muscle-movement
Nervous-control

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

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

10. Functions Protection Absorption Receive stimuli Form smooth surfaces
Secretion: exocrine, endocrine

11. Epithelial cells are classified by shape and number of layers.
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. Psuedo 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 Stratified (layered) Found: – Thick for protection
Skin
Esophagus
Oral Cavity

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

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

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