1. Tissues, Organs, and Organ Systems
Human Bio 11

2. Body Organization
Organelle
Cell
Tissue
Organ
Organ System
Organism

3. Tissue
A group of cells that work together to perform a similar function.
Five main types:
Epithelial
Connective
Blood
Muscle
Nerve

4. Epithelial Tissue
Covers entire body surface and most of the body's inner cavities.
Outer epidermis (skin) protects from injury and drying out.
Inner epidermal tissue protects and secretes mucus (ex. along digestive tract).

5. Connective Tissue It binds structures together.
Provides support and protection.
Stores fat and other nutrients.
Often made of collagen or elastin.
Examples:
tendons, ligaments, cartilage, bone, blood

6. Connective Tissue

7. Muscle Tissue Contracts for movement.
Composed of fibers made of actin and myosin proteins.

8. Nerve Tissue Conduct electrochemical messages.
Specialized tissue that forms nerves, brain, spinal cord.

9. Organs
A group of tissues joined in structure to serve a common function.
Each located in specific location, with specific functions.

10. Organ Systems Groups of organs that perform related functions.
Organ systems contribute to maintaining a stable internal environment.
Some organs can be part of more than one system.
Example: lungs  respiratory and circulatory

11. 1. Digestive
convert food to usable nutrients
2. Circulatory
transport of necessary molecules to cells
3. Immune
defense against invading pathogens
4. Respiratory
gas exchange
5. Excretory
gets rid of metabolic wastes
6. Nervous & Sensory
regulation and control, response to stimuli, processing information
7. Muscular & Skeletal
support and movement
8. Endocrine
regulation of internal environment, development
9. Reproductive
producing offspring

13. Portfolio Work Body Organization Worksheets What is a Cell Worksheets
What is a Tissue Worksheets
What are Organs and Organ Systems Worksheets