1 Our Human Body -Your human body systems work together to function for the whole (organism).
Mar 27, 2015
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Our Human Body
-Your human body systems work together to function for the whole (organism).
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A system is a whole made up of many parts.
Organization in the human body:
1) Cell
2) Tissue
3) Organ
4) System
5) Organism
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I. Nervous System
• Functions to direct (control) your body’s actions via electrical impulse.
• Receives & responds to information.
• Stores & processes information.
• Maintains homeostasis.
Organs: Brain, Spinal Cord
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II. Endocrine System
• Functions to control and regulate your body’s actions by secreting chemicals (hormones).
Organs: See image to right-->
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III. Digestive System• Functions to break
down the food you eat to a small enough size for cell entry.
• Breakdown is mechanical & chemical.
• Also functions to eliminate waste.
Organs: Mouth, esophagus, intestines, stomach … See figure to right
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IV. Immune System
• Functions to combat infection and fight off disease.
Organs: See image to right-->
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V. Circulatory System• Also known as the
cardiovascular system.
• Functions to transport materials to & from all cells of your body.
Organs: Heart, arteries, veins, aorta.
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VI. Respiratory System
• Functions to bring oxygen in to your body and remove carbon dioxide waste.
Organs: Lungs, trachea, mouth, bronchi
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VII. Skin System • Functions to cover and
protect your body.• Regulates body
temperature.• Senses environment.• Removes waste.• Produces vitamin D.• aka: Integumentary
system
Organs: skin, hair, sweat glands,nails.
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VIII. Skeletal System
• Functions to shape & support your body.
• Protects organs.• Produces blood cells.• Stores minerals (Ca2+) &
other needed materials.
Organs: skull, femur, rib cage, sternum and all other bones.
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IX. Muscular System
• Functions to provide movement.
Organs: biceps, triceps, deltoids…
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X. Reproductive System• Functions to
allow humans to mix their genetics through sexual reproduction, thus making unique offspring
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XI. Excretory System
• Functions to filter and eliminate liquid waste.
• Also removes excess water.
QuickTime™ and a decompressor
are needed to see this picture.
Organs: see image to right -->
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How does your stomach work with other systems?
• Smooth muscles contract to move food along your digestive tract. [peristalsis]
• Blood vessels deliver oxygen to stomach cells. (circulatory)
• Strong acids kill off harmful pathogens, thus improving immunity.
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How does your liver work with multiple systems?
• Makes bile for digestion of fats.
• Breaks down medicines to support immunity.
• Filters blood from circulation.
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How do your bones work with other systems?
• Bone marrow produces blood cells (circulatory).
• Bones attach to skeletal muscle for movement.
• Bones protect vital organs, i.e. brain (Nervous).