body organization and systems overview. cells cells make up all living things. there are different...
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Body Organization and Systems Overview
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Cells
• Cells make up all living things.• There are different types in your
body, and they are the basic units of structure and function.
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Tissues
• Cells make up tissues, and there are 4 main types
1. Epithelial Tissue2. Connective Tissue3. Muscle Tissue4. Nerve Tissue
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Epithelial Tissue
• Function – lining inside and outside of the body
• Examples: skin, organs, mouth
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Connective Tissue
• Function: Provides support and structure• Examples: tendons, ligaments, cartilage,
bone, fat
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Muscle Tissue
• Function: Movement, can contract• Examples: All muscles
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Nerve Tissue
• Function: Conducts signals• Examples: glial cells and neurons
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Organs
• Tissues are grouped together to make Organs.• Organs are made of at least 2 different types
of tissue that work together for a common purpose.
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Organ Examples
• Heart
• Lungs
• Stomach
• Liver
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Organ Examples
• Kidney
• Brain
• Small Intestine
• Large Intestine
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Organ Examples
• Urinary Bladder
• Pancreas
• Spleen
• Gall Bladder
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Skin
• And of course the largest organ in the body, the skin!
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Organs (fill in the letters on your paper)
A. Brain B. HeartC. Large IntestineD. Small IntestineE. Stomach F. KidneyG. LiverH. PancreasI. Gall Bladder
A
B
CD
EF
GH
I
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Organs
1
2
3
4
678
9
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Systems
• Two or more organs that work together to perform a specific functions make up different organ systems that make up your body.
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Systems Examples
• Digestive• Excretory• Musculoskeletal• Circulatory• Respiratory
• Integumentary• Endocrine• Nervous• Reproductive• Lymphatic
No system works by itself. They overlap and help each other and control each one another to make your body run smoothly. In a sense, they make up one big factory (YOUR BODY!!!).
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Digestive System
• Functions: To break down the food we eat and absorb the nutrients in our food.
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Excretory System
• Function: To rid the body of wastes.
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Musculoskeletal System
• Function: To give the body structure, support, and movement.
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Circulatory System
• Function: To transport nutrients, gases, hormones, and wastes throughout the body.
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Respiratory System
• Function: To exchange gases between the body and blood and the environment.
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Integumentary System
• Function: To protect the inside of the body and maintain homeostasis (a stable internal environment – temperature, pH, etc.).
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Endocrine System
• Function: To relay chemical messages throughout the body mainly in the form of hormones.
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Nervous System
• Function: To relay electrical messages throughout the body that often control other organs and systems.
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Reproductive System
• Function: To make gametes that can form a new organism at fertilization.
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Lymphatic System
• Function: To remove excess fluids and destroy internal invaders (bacteria and viruses).
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