How an organism maintains homeostasis
interaction of the various organ
systems in the body
Vince Regil Gravanza 12-St. Patrick
Each organ system performs specific
functions for the
body, and each organ system is typically studied
independently. However, the organ systems also
work together to help the body maintain homeostasis.
The cardiovascular, urinary, and lymphatic systems
all help the body control water balance.
The cardiovascular and lymphatic systems transport
fluids throughout the body and help sense
both solute and water levels and regulate pressure
If the water level gets too high
the urinary system
produces more dilute urine
(urine with a
higher water content) to help
the excess water.
If the water level gets too low
More concentrated urine is
produced so that water is
The digestive system also
plays a role with variable water absorption.
Water can be lost
integumentary and respiratory systems
but that loss is not directly involved in
maintaining body fluids and is usually associated
with other homeostatic mechanisms.
Similarly, the cardiovascular, integumentary, respiratory,
and muscular systems work together to help the
body maintain a stable internal temperature.
blood vessels in the skin dilate,
allowing more blood to flow
near the skin’s surface.
This allows heat to dissipate
through the skin
and into the surrounding air.
The skin may also produce sweat if the body gets too hot;
when the sweat evaporates, it helps to cool the body.
Another way the body dissipates excess heat to maintain
homeostasis is through exhalation. Air that enters
the lungs is warmed by body heat and then exhaled.
Together, these responses to increased body
temperature explain why you sweat, pant,
and become red in the face when you exercise hard.
Conversely, if your body is too cold,
blood vessels in the skin contract,
and blood flow to the extremities
(arms and legs) slows.
Muscles contract and relax rapidly, which generates heat
to keep you warm.
The hair on your skin rises, trapping more air, which is a
good insulator, near your skin.
These responses to decreased body
temperature explain why
you shiver, get “goose bumps,” and
have cold, pale extremities
when you are cold.