7.L.1.4 - Summarize the general functions of the major...
Transcript of 7.L.1.4 - Summarize the general functions of the major...
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7.L.1.4 - Summarize the general functions of the major systems of the human body (digestion, respiration, reproduction, circulation, and excretion) and ways that these systems interact with each other to sustain life.
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Major organs
blood vessels
heart
Function
transports nutrient
and waste
throughout the
body
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Contributes to homeostasis by..
regulates & maintains correct levels
nutrients, oxygen, and waste
products needed by cells
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Major organs
Mouth
Esophagus
Stomach
large and small
intestines
colon
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Function
absorbs nutrients by breaking down food into usable
particles
Contributes to homeostasis by..
regulating the intake of
nutrients
breaking down food
molecules & absorbing them
into the cells
regulating water intake (large
intestine)
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Major organs
Kidneys
Liver
Bladder
Colon
Rectum
Lungs
Skin
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Function
removes waste from the body
Contributes to homeostasis by..
Removing all waste material from the
body Skin - sweats (which also helps to cool the body)
Kidneys- filter chemicals in the blood
Liver -filters toxins and acids from the blood
Colon- allows solid waste to pass from the body
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Major organs
Lungs
Function
Moves oxygen into
the body while
removing carbon
dioxide (CO2) from
the body
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Contributes to homeostasis by..
bringing in necessary levels of
oxygen while removing harmful
CO2
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Major organs
bones
Function
protects and supports other body
systems
Contributes to homeostasis by..
supporting & keeping organs in
place
directly interacts with muscles
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Includes
voluntary and involuntary muscles
Function
creates the force that enables the body to move & carry out different functions related to movement
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Contributes to homeostasis by..
allowing movement & the
body to return back into
place after changing
position; many involuntary
muscles constantly regulate
body functions such as
breathing and heartbeat
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Major organs
Glands
Brain
Function
regulates and sends hormones throughout the body
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Contributes to homeostasis by..
Regulating hormone messages
such as temperature, hunger, sleep,
etc.
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Major organs
Nerves
Brain
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Functions
sends chemical messages
throughout the body
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Contributes to homeostasis by..
sending chemical messages to
the brain that tell the status of
pain, temperature, hunger,
etc. so that the body can
make adjustments using other
systems
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The immune system protects cells from microscopic invaders.
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What four systems are involved in
regulating internal body temperature?
› nervous
› endocrine
› excretory
› circulatory