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Chapter 7
Nervous System
24
Biology
Not Applicable
01/26/2012

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Term
dense collections of myelinated fibers in nerve tissue is called
Definition
white matter
Term
the myeline sheaths  surrounding the axons of neurons in the peripheral nervous system (PNS) are formed by
Definition
schwann cells
Term
Nerve impulses are carried from sensory receptors toward the central nervous system by
Definition
Sensory nerves
Term
intellectual reasoning and socially acceptable behavier are controlled un the
Definition
the anterior part of the frontal lobes of the cerebrum
Term
a person who you just met who has normal functioning eye, but who has had trauma to the brain now is completely blind. the brain damage probably occured
Definition
in the posterior part of the occipital lobe of the cerebrum
Term
the dura mater, arachnoid matter and pia mater
Definition
cover and protect the central nervous system
Term
a nerve cell that is at rest
Definition
has more sodium ions (NA+)  outise the cell than inside the cell
Term
neurotransmitters are taken into the dendrites of a receiving neuron by means of
Definition
diffusion through ion channels
Term
a nerve cell that is at rest is said to be polarized, which means that the
Definition
outiside of the cells is more positive
Term
you are driving down hwy 47 and all of a sudden a truck starts heading towards your lane. your heart starts pounding and you think your going to die. you swerve to the right and the right and the truck swerves back in its lane. what caused your heart to speed up and your senses to be so acute?
Definition
a response from the sympathetic division of autonomic nervous system
Term
which is true of parkinsons and alzheimers disease?
Definition
percise causes are still unknown, new research intreatment involve stem cells and fetal tissue, both are degenerative diseases of the brain.
Term
the sensory nerve  impulses from chemoreceptors in the nose arrive in the brain through
Definition
olfactory nerves
Term
regulation of body temperature, water nalance, metabolism.and emotional drives take place in the
Definition
hypothalamus
Term
smooth coordinated movements of the body, dyue to precise timing of skeletal muscle contractions and balance are controlled in the
Definition
cerebellum
Term
the cells in nerve tissue that support, insulate, and protect delicate neurons are
Definition
neuroglia
Term
which of these functions are associated with the cerebral cortex of the human brain?
Definition
speech and memory, logical and emotional thought processes, interpretation of sensation and voluntary movement
Term
the left and right hemisperes of the cerebrum communiocate with each other through
Definition
the corpus callosum
Term
your car swerves anr your inches from going off a cliff, your heart is pounding. five minutes later your heart is normal and your feeling calm and secure as you drive home. this return to normal body condition is accomplished by
Definition
a response from the parasympathetic division of the autonomic nervous system
Term
a person who has had a stroke and who has lost the ability to smile on the right side othe the mouth and the ability to move the right leg and tight arm has most likely had brain damage
Definition
on the left side of the frontal lobe of the cerebrum
Term
involuntary activities, such as contraction of smooth and cardiac muscles are controlled by
Definition
the autonomic nervouse system
Term
neurons that carry nerve impulses from the central nervous system to muscles, glands, or viscera are
Definition
motor neurons
Term
the amount of tension in skeletal muscles that advise the brain of the position of our body parts and their movement is detected by sensory receptors called
Definition
proprioceptors
Term
when an action potential reaches the axon terminal of a nerve cell
Definition
vesicles release neurotransmitters into a synapse between nerouns
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