objective swbat arrange in order the organizational levels of the human body from the cell through...
DESCRIPTION
Cells The cell is the basic unit of structure and function in living things. In multicellular organisms, cells are specialized for certain funtions. (Each cell has a specific job.)TRANSCRIPT
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Objective
• SWBAT arrange in order the organizational levels of the human body from the cell through organ systems.
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Think about a Pep band...
Would you want everyone to play the same instrument?No – to form a successful marching band, organization is critical. Your body is the same way.
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Cells
• The cell is the basic unit of structure and function in living things.
• In multicellular organisms, cells are specialized for certain funtions. (Each cell has a specific job.)
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Check For Understanding
• What is the basic unit of structure and function in living things?
A.OrganismsB.OrgansC.CellsD.Tissues
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Levels of Organization in the Body
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Tissues
• A tissue is a group of similar cells working together to perform a specific function.
• Types of tissue:– Epithelial tissue– Nervous tissue– Muscle tissue– Connective tissue
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Offensive Lineman in Football What is the function here ?
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Examples of tissues
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Epithelial tissue: covers and protects underlying tissue
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Nervous tissue: sends electrical signals through the body
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Muscle tissue: contracts and relaxes to produce movement
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Connective tissue: joins, supports, and cushions organs
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Check For Understanding• Which statement about cells and tissues is
correct?A.Tissues are bigger than cells, because tissues
make up cells.B.Cells are bigger than tissues, because tissues
make up cells.C.Tissues are bigger than cells, because cells make
up tissues.D.Cells are bigger than tissues, because cells make
up tissues.
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Organs
• An organ is a group of different tissues that work together to perform a complex function.
• Example– Heart: made of muscle and
epithelial tissue– Bladder: made of epithelial
and connective tissue
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Heart
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Stomach
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Liver
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Lungs
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Large Intestine
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Check For Understanding
• Which of these parts of the body is the largest?
A.CellsB.TissuesC.OrgansD.They are all the same size.
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Homeostasis
Courie Definition
• The ability of the body to seek equilibrium and maintain balance when dealing with change
Key Word: Balance
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Organ Systems
• An organ system is a group of organs working together to maintain homeostasis.
• Example:– Digestive system: made of
mouth, esophagus, stomach, small intestine, large intestine
– Supplies nutrients to cells
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Respiratory System
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Circulatory System
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Nervous System
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Skeletal System
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Muscular System
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Check For Understanding
• What is the name for a group of organs working together to maintain homeostasis?
A.TissueB.CellC.OrganD.Organ system
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Levels of Organization in the Body
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Organism
• An organism is a living thing.
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Levels of Organization
Cells
Tissues
Organs
Organ Systems
Organism
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Check For Understanding
• Which diagram below correctly shows the levels of organization of the human body?
A.Cells organs organ systems tissuesB.Cells organs tissues organ systemsC.Cells tissues organ systems organsD.Cells tissues organs organ systems