What are Body Systems?

1
What are Body Systems?

• Chapter 8 lesson 1

2
Systems

• Cells- The basic unit of all living things.
• (ex.- nerve cells, muscle cells)
• Tissue- a group of similar cells working
  together. (ex.-muscle or nerve)
• Organ- a group of tissues that work together.(
  ex.- heart is muscle tissue)
• Each organ has a specific job in your body
• System- is one or more organs working together
  for a specific purpose in your body( ex.- heart
  and lungs work together)
• Cellgt Tissuegt Organgt Systemgt Your Body

3
Basic Parts of a Cell
4
Basic Parts of a Cell

• Cell membrane- the wall or outside edge of the
  cell. Maintains the shape of the cell.
• Nucleus- the center of the cell. Contains all the
  important information of the cell.
• Cytoplasm- supplies the cell with its nutrition
  or food.

5
Your Body Systems

• Your body- is a group of systems working
  together.
• Homeostasis- the condition in which the bodys
  internal conditions are stable and in good
  health.
• All of your Body systems depend on each other.
  Your muscles need oxygen from the respiratory
  system and energy from your digestive system,
  which is supplied by your circulatory system.
  Your skeletal system supports you and the nervous
  system controls all of your body systems.
• Can you think of a situation where a problem with
  one body system could cause a problem in another
  body system?