1. Please don’t touch the laptops or microscopes yet.
1. Leave everything on the far tables except your planner and Science Journal. 2. Find a seat. 3. Write your hw down. 4. Put your planner on the table with your stuff. 5. Go back to your seat. 6. Open a textbook. 7. Start reading Chapter 1, section 1.

2. Organization of the Body:
Cells Tissues  Organs  Organ Systems  Organism

3. 1-1.How the Body is Organized
Cells
Basic unit of structure and function in living things
Very tiny (most are microscopic)
About 100 trillion in the human body

4. Simplified Animal Cell
What are the 3 main parts of a cell?
cell membrane: forms the outside boundary of the cell.
cytoplasm: clear, jelly-like substance; contains many other important cell structures (organelles).
nucleus: control center of cell; contains DNA.

5. A cell’s structure helps it perform its function
Red blood cells
Adipose (fat) cells
Neurons (nerve cells)

6. Tissues A group of similar cells that perform the same function
4 Types of Tissue
A group of similar cells that perform the same function
1. Muscle tissue
Can contract
Enables movement
2. Nerve tissue
Carries messages
3. Connective tissue
Provides support for the body
Connects the parts of the body
4. Epithelial tissue
- Covers surfaces, inside & out
- Protects, absorbs, releases

7. This is an example of muscle tissue.
The job of this tissue is to contract and help with movement

8. This is an example of nerve tissue.
It can be found in the brain, spinal cord, and nerves.
Its function is to carry messages.

9. This is an example of connective tissue. B
This is an example of connective tissue.
Connective Tissue provides support for your body and connects all its parts.
Bone, fat, and blood are all types of connective tissue. Which one is this a picture of?

10. This is an example of bone tissue
This is an example of bone tissue. Which of the four types of tissue is bone? A B C

11. B A C This is an example of epithelial tissue.
Epithelial tissue covers the surface of your body and the outside of your internal organs. It also lines the inside of some of your organs.
Some epithelial tissue protects. Other types absorb or release substances.

12. The cells in this tissue line a gland in the body that secretes mucus
The cells in this tissue line a gland in the body that secretes mucus. What type of tissue is it?

13. Structures composed of different kinds of tissue
Organs
Organ System
Organism
Structures composed of different kinds of tissue
Perform a specific job
e.g. lungs, heart, liver
A group of organs that work together to perform a major function
e.g. nervous system, digestive system
Composed of different organ systems working together and depending on one another

14. System Function Nervous Circulatory (Cardiovascular) Respiratory
Detects info; interprets info; controls most body functions
Circulatory (Cardiovascular)
Carries materials to and from body cells; helps fight disease
Respiratory
Takes in oxygen; eliminates CO2
Digestive
Takes in food; breaks down food; absorbs digested materials
Skeletal
Provides support & protection; makes blood cells; storage
Muscular
Allows movement; moves food through digestive system
Skin (Integumentary)
Protects; keeps H2O in; regulates temp.
Reproductive
Creates offspring; controls gender char.
Endocrine
Controls many processes via chemicals
Excretory
Removes wastes
Immune
Fights disease