The Brain and the Spinal Cord can be considered the basic unit of the
Central Nervous System [ CNS ). All sensory and motor information comes or
goes from the central core. The Spinal Cord is the master nerve tract (or nerve
trunk ] in our body and consists of millions of nerve fibers bundled together.
somewhat like many small threads making up a large rope. Each fiber is a part
of a single nerve cell, or Neuron-- there are 12 - 15 billions of them in our
brain alone.
1. What are the two [ 2 ] basic units of the CNS?
2. Which is called the master nerve tract or nerve trunk?
3. How many nerve cells or neurons are there in the Brain?
The Brain within the Skull has been described as a huge walnut or
cauliflower such descriptions is the least of many good reason why we should be
happy our brains are not exposed to public view.
Brain tissue is pinkish gray and white---- is among the delicate tissues in
our body and the destruction of even a small part may mean lasting impairment
or death.
4. Tell how the medical author described the Brain?
5. Why is the Brain considered one of the most delicate organs in our body?
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Answer:
1-spinal cord and brain
2-spinal cord
3-12-15 billions
4-author describe that the brain are the basic unit of our CNS and consist of spinal cord at nerves