1. Anatomy and Physiology Miss Plumley
Tissues Chapter 4
Anatomy and Physiology
Miss Plumley

2. What is human tissue? Tissue Cells organized into groups and layers
Each type of tissue is composed of similar cells specialized to carry on a particular function

3. Four Major Types of Tissue
Epithelial
Protective coverings, also used for absorption and secretion
Connective
Support soft body parts and bind structures together
Muscle
Produces body movements
Nervous
Conducts impulses that help control and coordinate body activities
*Extracellular matrix: Nonliving portion of tissue

4. Epithelial Tissues -Found through out the body
-cover organs, forms inner lining of body cavities, lines hollow organs
-always exposed to the outside or open internal space
Basement Membrane
Nonliving layer that is found between the underside of epithelial tissue and connective tissue (basement membrane is part of the extracellular matrix)

5. Epithelial Tissue -Tightly Packed -Readily Divide
Injuries can heal quickly and new cells replace lost or damaged ones
-Lack Red Blood Vessels
Receive nutrients from underlying connective tissue
Classified according to shape and number of cell layers
1. Squamous: Thin, flat cells
2. Cuboidal: Cubed-shaped cells
3. Columnar: Elongated Cells
4. Simple: single layer
5. Stratified: two or more layers

6. Epithelial Tissue There are 9 Types of Epithelial Tissue
1. Simple Squamous
Single layer, thin, flattened cells
site where diffusion and filtration take place
Example:
They line the air sacs of the lungs where oxygen and carbon dioxide are exchanged.
Forms the walls of capillaries
Lines the inside of blood and lymph vessels
Covers membranes that line body cavities
Tissue is easily damaged because it is so thin

7. Epithelial Tissue 2. Simple Cuboidal Epithelium
Single layer of cube-shaped cells
Central located spherical nuclei
Covers ovaries
Lines ducts of certain glands
Salivary glands, thyroid gland
Secretes glandular products
Lines most of kidney tubules
-Example: Functions in secretion and absorption

8. Epithelial Tissue 3. Simple Columnar Epithelium Elongated cells
Single layer where nuclei is found near basement membrane
Nonciliated Cells
Lines uterus
Lines most organs of the digestive tract, including the stomach and small intestine
Example: Secretes digestive fluids and absorbs nutrients from digested food
Ciliated Cells
Help moving egg cells to uterus in the reproductive tubes of females

9. Epithelial Tissue 4. Pseudostratified Columnar Epithelium
Stratified or layered cells
Lines passage of respiratory system
Ciliated
Mucus covered
Trap dust and move it out of the airways

10. Epithelial Tissue 5. Stratified Squamous Epithelium Thick tissue
Lines oral cavity, esophagus, vagina and anal canal
Example: A protein called KERATIN is not formed keeping these areas soft and moist
Forms outer layer of skin (epidermis)
Example: As skin cells age they accumulate KERATIN and then harden and die producing dry, tough skin

11. Epithelial Tissue 6. Stratified Cuboidal Epithelial
Two or more layers of cubed-shaped cells
Linings of salivary gland and mammary gland ducts

12. Epithelial Tissue 7. Stratified Columnar Epithelium
Several cell layers
Protection and Secretion
Example:
Part of male urethra, Vas deferens and part of the pharynx

13. Epithelial Tissue 8. Transitional Epithelium
Prevent contents of the urinary tract from diffusing back into the internal enviornment
Change response to increase tension
Expandable lining

14. Epithelial Tissue 9. Glandular Epithelium
Secrete substances into ducts or into body fluids
Example:
Salivary glands, sweat glands and endocrine glands

15. Epithelial Tissue Epithelial Tissue Assignment Create a Foldable
Include all 9 types of Epithelial Tissue
Description and picture is required for each type of Epithelial Tissue
Explain where each type of tissue can be found in the human body
Include the function of each tissue
Pictures can be drawn or printed from the internet
Complete work cited on the back of your foldable if necessary