1. Circulatory system Functions
Carries blood and needed substances (oxygen and nutrients) to cells and waste products away to the cells and all your body.
Carries cells that fight disease
Main structures:
The Heart Pump blood
The Blood Vessels: (veins, arteries, capillaries) Bring blood around
Blood Carry oxygen, nutrients and waste
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2. Lymphatic System Functions
Collect and Return tissue fluid to the bloodstream.
Surveillance & defense
Bring the lipids from the digestive system to the cells that need it
Components
Lymph is the fluid
Vessels – lymphatics
Structures & organs: Tonsils, Spleen, thymus
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3. Respiratory system Functions
Moves oxygen from the outside environment into the body.
Removes carbon dioxide and water from the body
Main Structure: Lungs
Also bronchi, bronchioles, alveoli, nasal cavity, pharynx, larynx, epiglottis, trachea,
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4. Nervous system
Main Function: Control for the rest of the systems and body functions
Receives information from inside and outside the body
Directs the way that the body will respond
Divided in 2:
Central Nervous system; Peripheral nervous system
Main structures
brain, spinal cord, nerve cells NEURONS, sense organs
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5. Reproductive system Function
allows more humans to be born to continue the species
Main structures
egg, sperm, ovaries, testes
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6. Endocrine system Functions
produces hormones that control the levels of other substances in the body
Keep the homeostasis of your
body
Structures
glands, hormones
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7. Immune system Main function: fights germs entering the body
Main parts: lymph, white blood cells, antibodies
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8. Integumentary system Main organ: SKIN Functions
Protects the other body systems from injury, infection
Helps the body maintain homeostasis
synthesis of vitamin D Required for bone formation
Excretion of salts, water and wastes
sensory perception
Main organ: SKIN

9. Excretory system Function
This system collects the waste produced by the cells and removes the waste from the body.
Main organ: Kidneys
Others are urinary bladder, urethra, ureter, liver
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10. Digestive system Function
Breaks down food small enough to get into your cells.
Main Structures
stomach, esophagus, mouth, salivary glands, large and small intestine, rectum, villi, pancreas, liver, gall bladder
Chemical digestion.
Mechanical digestion.
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11. Skeletal system Functions
Provide the body structure and support, protects organs, produces blood cells, stores minerals, movement
Main structures:
bones, joints, ligaments
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12. Muscular system provide movement for the body The main function
skeletal: Pull bones to cause movement
smooth: Organ muscle, and vascular walls
cardiac: Heart contractions
Main structures: 3 types of muscle
And tendons
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