1. Body Systems Overview Mrs. Hill

2. Bell Ringer-11-08-17 MUST WRITE IN COMPLETE SENTENCES!!!
Name as many body systems as you can. (One example: respiratory system)
MUST WRITE IN COMPLETE SENTENCES!!!

3. cell – is the basic unit of all living things
tissue – a group of cells that are alike and work together to do the same job.
organ – a body part made up of various tissues; does a certain job in the body.
body system – a group of organs that work together to do a certain job.

4. Body Systems

5. 1. What are your cells? a. Everything in your body is made of cells
b. Different cells have different shapes and do different jobs

6. c. Almost all have the same 3 parts
i. Cell membrane – thin outer covering that holds the cell together, lets in water and everything else the cell needs, keeps out most things that could harm the cell
ii. Nucleus – small center that stores information and directs all the activities of the cell, “brain”, sends messages
iii. Cytoplasm – material that is between the nucleus and cell membrane. Made up of parts that help the cell work.

7. 2. What are your tissues?
a. Tissue – a group of cells working together make up tissue.
i. Each does a different job and are specially formed for the work they do - “function”
ii. EX: bone cells are hard and cannot bend, skin cells are flat and thin and fit tightly together at the edges

8. 3. What are your organs? a. Tissues work together to make up organs
b. Each organ does a specific job to help you stay alive and healthy
c. EX: heart is an organ that pumps the blood, eyes are organs that help you see

9. 4. What are your body systems?
d. some organs are part of more than one system
e. systems work together to make sure that the body maintains homeostasis – is the condition in which the body’s internal conditions are at a stable state
f. Without homeostasis your body would be out of balance and would not function properly.

10. What do we share?

12. Review Name an organ that belongs to 2 systems and name the systems.
What is the basic unit of all living things?
What is called when the body’s internal conditions are at a stable state?