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*Interesting Facts about Our Nervous System*
http://www. ... com/nervous.htm
Nerve fibers can transmit messages at the speed of about 400 feet per second. ...
The nervous system includes about 28 billion cells. ...
Another little tidbit about REM sleep is that your body needs a lot of it. ... Once the vomit center is switched on, there is just about no stopping it. ...
*Nervous Systems of Other Organisms*
Human/Mammal: The nervous system consists of the Central Nervous System (CNS), essentially the processing area, and the Peripheral Nervous System which detects and sends electrical impulses that are used in the nervous system. ...
Aves: Birds have a similar basic plan to their nervous system as the rest of the vertebrates. The central nervous system is made up of a brain, a spinal chord and nerves. Birds also have an autonomic nervous system, which as in mammals and reptiles, controls such essential actions as heartbeat, breathing and digestion. ... snakes, lizards, turtles and alligators) A reptile has a brain and nervous system. ...
Amphibian: An amphibian has a brain and nervous system. ... Amphibian Nervous System consists of the brain, encased by the skull for protection, which is the control center for vertebrates. The brain and the spinal cord are the central nervous system, and the peripheral nervous system links with it. Motor nerves, sensory nerves and autonomic nerves are a part of the peripheral nervous system.
Fish: The nervous system of a fish differs only slightly from any vertebrate, due to its adaptation to its underwater habitat. The nervous system of a fish consists of two systems: the cerebrospinal system and the autonomic system. ... ) Insects have a relatively simple central nervous system with a dorsal brain linked to a ventral nerve cord that consists of paired segmental ganglia running along the ventral midline of the thorax and abdomen. ... In general, the central nervous system is rather ladder-like in appearance.
Annelid: The nervous system typically consists of a primitive brain, or ganglionic mass, located in the head region, connected by a ring of nerves to a ventral nerve cord that runs the length of the body; the cord gives rise to lateral nerves and ganglia in each segment. ...
Nematode: The nematode nervous system consists of a set of parallel interconnected neuronal processes that run lengthwise on the nematode body, or circle the nematode body adjacent to the hypodermis. ... The nervous system provides the means for the nematode to detect its environment and react to it. ... planarian, tapeworm, flatworm) Flatworms are bilaterally symmetrical with a defined head and tail region and a centralized nervous system containing a brain and nerve cords.
Approximate Word count = 2074
Approximate Pages = 8.3
(250 words per page double spaced)
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