What are Body Systems Chapter 8 lesson 1

What are Body Systems? Chapter 8 –lesson 1

Systems n n n n 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) Cell> Tissue> Organ> System> Your Body

Basic Parts of a Cell

Basic Parts of a 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.

Your Body Systems n n Your body- is a group of systems working together. Homeostasis- the condition in which the body’s 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?