1. Tissues
Lab Bio – Cell Project

2. What is a tissue?
A tissue is a group of cells that have a similar shape and function.
Different types of tissues can be found in different organs.

3. 4 Types of Tissue
Epithelial
Muscular
Nervous
Connective

4. I. Epithelial Tissue
Cells of this tissue can be thin and flat, cubic, or elongated.
Covers the body surface (skin)
Lines most internal cavities
Main functions:
Protection
Secretion
Absorption
Filtration
Found in: skin, digestive system, respiratory system, etc

5. Epithelial Tissue .

6. Epithelial Tissue 1. Stratified Squamous
2. Simple columnar (elongated with 1 nucleus)
3. Simple Squamous (kidney)
4. Simple Cuboidal (kidney)

7. II. Muscular Tissue
Muscle tissue can either be voluntary or involuntary
Voluntary: you can control it on your own
Involuntary: you can’t control it on your own
There are 3 types of muscular tissue:
Skeletal: used in contractions of the skeletal system
Smooth: found in walls of internal organs and blood vessels
Cardiac: only found in walls of heart, involuntary

8. CARDIAC
SMOOTH
SKELETAL

9. III. Nervous Tissue
Composed of specialized cells which receive stimuli and conduct impulses to and from all parts of the body
Nerve cells are called neurons

10. Nervous Tissue

11. IV. Connective Tissue Most abundant tissue in the body
Has a variety of functions
Support and protection
Fat (adipose) tissue
Loose connective tissue
Dense fibrous tissue
Cartilage
Bone
Blood

12. Adipose (Fat)

13. Blood

14. Cartilage

15. Bone