Body Systems Overview Mr. Sierer

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Body SystemsOverviewMr. Sierer
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• 1. cell membrane - the thin outer covering of a
  cell holds the cell together
• 2. nucleus the small central core in almost
  every cell stores information and directs all
  the activities of the cell.
• 3. cytoplasm the material between the cell
  membrane and the nucleus made up of many parts
  that help the cell work

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

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

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• 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.

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• 2. What are your tissues?
• a. Tissue a group of cells, ex muscles, blood,
  skin, hair, bone
• 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

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• 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

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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 bodys internal conditions are at a
  stable state

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Body Systems Worksheets
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Review

• What are the three main parts of a cell?
• What are the three jobs of a cell membrane?
• How do cells, tissues and organs work together in
  the body?
• How can a problem in one body system affect
  another body system?