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Nervous System & the
Brain
,
Images by Wernher Krutein and
PHOTOVAULT
T
he brain has three main regions: the brain stem, which merges with the spinal cord; the
cerebellum
; and the
cerebrum
, which contains the
two cerebral hemispheres
. The cerebrum makes up 90% of the brain. The brain is proteced by the
skull
, which encases it, and the cerebrospinal flu, which cushions it.
The brain sends and receives messages as impulses of electrical energy. The energy travels via nerve cells, called neurons, that run down the spinal cord to the rest of the body. Each neuron ends in a network of fine branches.
Brain facts
~A typical adult human brain weighs about 1.3kg (3lb).
~About 0.85 liters (1.8 pints) of blood travel through the brain every minute.
~A human brain contains about fifteen billion cells.
T
his page contains samples from our picture files on
Brains
. These photographs are available for
licensing
in any media. For Pricing, General Guidelines, and Delivery information click
here
. You may contact us thru
email or by phone
for more information on the use of these images, and any others in our files not shown here. You may also use our search engine
PHOTOVALET
(tm)
to find other images not found on this page.
Please do
not
ask us or email us for free use of these images!
,Included in the Vault are images of: Brain Stem,
Video Footage of Arthroscopic Knee
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PHOTOVAULT is a division of
Wernher Krutein Productions Inc.
and is based in San Francisco.
707-775-2562
All images represented and created and displayed on these pages by PHOTOVAULT are protected by US Copyright Law and the Berne Convention. No use, reuse, copying or reproduction is allowed without PHOTOVAULT'S specific agreement and permission, not even on the internet. Please respect the usage of these images.
