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Functional Anatomy
The Nervous System - 9.8.06
27
Other
Not Applicable
09/03/2006

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Term
The nervous system is one of the two main ____.
Definition
Systems of control
Term
What is the nervous system made up of?
Definition
nerve cells, or neurons
Term
In what form do neurons carry messages?
Definition
Electrochemical impulses through the body
Term
What are the 2 main divisions of the nervous system?
Definition
Central Nervous System (CNS) and Peripheral Nervous System (PNS)
Term
What does the central nervous system consist of?
Definition
the brain and spinal cord
Term
All higher functions of the nervous system are the responsibility of which nervous system?
Definition
Central
Term
All basic functions of the nervous system are the responsibility of which nervous system?
Definition
Peripheral
Term
What three membranes protect the brain and spinalcord?
Definition
the dura mater (outermost)
the arachnoid (middle)
the pia mater (innermost)
Term
What is another name for brain membranes?
Definition
Meninges
Term
What structure is the brain protected by? What structure is the spinal cord protected by?
Definition
skull;vertebrae
Term
What percent ofthe horse's body weight consists of the brain?
Definition
1%
Term
What are the three primary segments of the brain?
Definition
hind brain, midbrain, fore-brain
Term
What is the hind brain AKA and what does it consist of?
Definition
Brain stem; pons & cerbellum
Term
What is the purpose of the brain stem?
Definition
Control breathing
Term
What does the cerebellum control?
Definition
Movement
Term
What is the pons related to?
Definition
emotions & behavior
Term
What is the midbrain responsible for?
Definition
sight, smell, and control of hind brain activity (i.e. voluntary control of breathing)
Term
What does the fore brain contain?
Definition
Pituitary gland
Term
How long is the spinal cord?
Definition
6-7 feet
Term
How many pairs of spinal nerves connect the spinal cord to the peripheral nerves?
Definition
42
Term
What does the peripheral system consist of?
Definition
All of the nerves in the body
Term
What is the autonomic nervous system divided into?
Definition
The sympathetic and parasympathetic nervous systems
Term
What are the sympathetic and parasympathetic nervous systems responsible for?
Definition
Regulation of involuntary activity.
Term
How are individual neurons limited?
Definition
They can only conduct impulses in one direction.
Term
What is a synapse?
Definition
A gap between one neuron and another.
Term
How is nervous tissue classified as?
Definition
Either white or gray matter.
Term
What are ganglia?
Definition
Bunches of nerve tissues.
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