Post on 04-Jul-2020
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.
Major organs
blood vessels
heart
Function
transports nutrient
and waste
throughout the
body
Contributes to homeostasis by..
regulates & maintains correct levels
nutrients, oxygen, and waste
products needed by cells
Major organs
Mouth
Esophagus
Stomach
large and small
intestines
colon
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)
Major organs
Kidneys
Liver
Bladder
Colon
Rectum
Lungs
Skin
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
Major organs
Lungs
Function
Moves oxygen into
the body while
removing carbon
dioxide (CO2) from
the body
Contributes to homeostasis by..
bringing in necessary levels of
oxygen while removing harmful
CO2
Major organs
bones
Function
protects and supports other body
systems
Contributes to homeostasis by..
supporting & keeping organs in
place
directly interacts with muscles
Includes
voluntary and involuntary muscles
Function
creates the force that enables the body to move & carry out different functions related to movement
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
Major organs
Glands
Brain
Function
regulates and sends hormones throughout the body
Contributes to homeostasis by..
Regulating hormone messages
such as temperature, hunger, sleep,
etc.
Major organs
Nerves
Brain
Functions
sends chemical messages
throughout the body
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
The immune system protects cells from microscopic invaders.
What four systems are involved in
regulating internal body temperature?
› nervous
› endocrine
› excretory
› circulatory