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ch. 10

QuestionAnswer
The ________ is the bodys control center and communication network Nervous system
The nervous system shares in the maintenance of ________ with the endocrine system homeostasis
The ______ consists of the brain and spinal cord. central nervous system
The ______ consists of the afferent peripheral system and the efferent peripheral system. peripheral nervous system
The afferent peripheral system are ______ neurons sensory
The efferent peripheral system are ______ neurons motor
The somatic nervous system and the autonomic nervous system are sub divisions of the _____. efferent peripheral system.
The somatic nervous system sends signals to ___________. skeletal muscles
the ____________ sends signals to cardiac and smooth muscles and glands. autonomic nervous system
The autonomic nervous system has two subdivisions the _____ and the _______. sympathetic division, parasympathetic division
the _______division of the autonomic nervous sytem stimulates and speeds up activity. sympathetic
the ______ division of the autonomic nervous system restores or slows down certain activities parasympathetic
The parasympathetic division of the autonomic nerous sytem stimulates teh bodys _____ activities. vegatative
_____ are nerve cells that transmit nerve impulses in the form of eletrochemical changes neurons
a ______ is a bundle of nerve cells. nerve
_________ are nerve cells that support and protect the neurons. Neuroglial cells
_______ are star shaped cells that wrap around neurons for support in the brain and spinal cord and connect neurons to blood vessels. astrocytes
_____ look like small astrocytes. They form fatty myelin sheath on the neurons in the brain and spinal cord. oligodendroglia
_____ are small cells that do phagocytosis of microbes and cellular debris. microglia
________ cells line the fluid filled ventricles of the brain. ependymal
______ cells form myelin sheaths around nerve fibers in the peripheral nervous system. schwann
A ______ is composed of a cell body with a nucleus and other intracellular organelles. neuron
_______ are extensions of the cell body and are the receptive areas of the neuron. dentrites
An ______ is a single long extension of the cell body. axon
on __________ a schwann cell produces a fatty myelin sheath that surounds and insulates the axon. large peripheral axons
narrow gaps in the sheath that surronds and insulates the axon are called _________ nodes of Ranvier.
___________ have several dentrites coming off the cell body and one axon. Multipolar neurons
Most neurons in the brain and spinal cord are _______ neurons multipolar
_________ have one dentrite and one axon. bipolar neurons
______ neurons are found in the retina of the eye, the inner ear and in the olfactory area of the nose. bipolar
_______ neurons have only one process extending from the cell body. Unipolar
Most sensory neurons are ___________ unipolar neurons
______ detect stimuli in our environment. receptors
________ neurons receive the impulse directy from the receptor site. afferent
afferent neurons are also refered to as _____ neurons. sensory
Internuncial neurons are also refered to as _____ neurons. association
___________ neurons are found in the brain and spinal cord. Internuncial
Internuncial neurons are multipolar _______ neurons.
efferent neurons are also called ______ neurons. motor
________ neurons bring about the reaction to the stimulus. efferent
efferent neurons are ________ neurons. multipolar
a _______ fiber has a higher concentration of Na+ on the outside than inside and a higher concentration of K+ on the inside than on the outside. nerve cell
a sodium- potasium ______ maintains the Na+ and the K+ concentration of a nerve cell fiber. pump
The ___________ has a negative electrical charge on the inside and a positive electrical charge on the outside nerve fiber.
The electrical ionic distribution of the nerve fiber is called the _________ or resting potential. membrane.
The action potential called ________ is when a nerve impulse begins and sodium ions rush in changing the inside electrical charge from negative to positive. depolarization
_________ restores the fibers membrane to the original resting or membrane potential. repolarization.
The __________ is a self propagating wave of depolarization followed by repolarization. nerve impulse.
The __________ states that if a nerve fiber carries any impulse, it will carry a full strength impulse. all or none law.
______ detect stimuli in our environment. receptors
________ neurons receive the impulse directy from the receptor site. afferent
afferent neurons are also refered to as _____ neurons. sensory
Internuncial neurons are also refered to as _____ neurons. association
___________ neurons are found in the brain and spinal cord. Internuncial
Internuncial neurons are multipolar _______ neurons.
efferent neurons are also called ______ neurons. motor
________ neurons bring about the reaction to the stimulus. efferent
efferent neurons are ________ neurons. multipolar
a _______ fiber has a higher concentration of Na+ on the outside than inside and a higher concentration of K+ on the inside than on the outside. nerve cell
a sodium- potasium ______ maintains the Na+ and the K+ concentration of a nerve cell fiber. pump
The ___________ has a negative electrical charge on the inside and a positive electrical charge on the outside nerve fiber.
The electrical ionic distribution of the nerve fiber is called the _________ or resting potential. membrane.
The action potential called ________ is when a nerve impulse begins and sodium ions rush in changing the inside electrical charge from negative to positive. depolarization
_________ restores the fibers membrane to the original resting or membrane potential. repolarization.
The __________ is a self propagating wave of depolarization followed by repolarization. nerve impulse.
The __________ states that if a nerve fiber carries any impulse, it will carry a full strength impulse. all or none law.
A _______ is an area where the terminal branches of an axon are close to but not touching the dentries of another neuron. synapse
When an impulse reaches the axon terminals, it triggers the release of a ________. neurotransmitter.
adrenalin, norepinephrine, serotonin, dopamine and endorphins are examples of _________. neurotransmitters.
a ______ is an involuntary reaction to an external stimulus. reflex.
a ________ is the pathway that causes a reflex. reflex arc
sensory neuron, association neurons, motor neurons, and effector organ are five components of a ________ reflex arc
________ referes to groups of myelinated axons from many neurons supported by neuroglia. white matter
______ consists of nerve cell bodies and dendrites. gray matter
A _____ is a bundle of fibers outside the central nervous system. nerve
______ are nerve cell bodies found outside the central nervous system. ganglia
a _____ is a bundle of fibers inside the central nervous system tract
a _____ is a mass of nerve cell bodies and dendrites inside the central nervous system nucleus
_____ are areas of gray matter in the spinal cord. horns
The _________ is a continuation of the medulla oblongata. spinal cord
The spinal cord is made of 31 ______, each giving rise to a pair of spinal nerves. segments.
The spinal cord is protected by the spinal ______. meninges.
The outtermost spinal meninx is the ______ or tough mother. dura mater
The middle spinal meninx is teh __________ or spider layer arachnoid mater
the innermost meninx is the ________ or delicate mother. pia mater
between the dura matter and the arachnoid is a space called the _______ space. subdural
the subdural space contains _______ fluid. serous
Between the arachnoid and the pia mater is the ________ space. subarachnoid
the subarachnoid space is where __________ fluid circulates. cerebrospinal
The spinal cord ______ reflexes. integrates
Each pair of spinal nerves connects to a segment of the spinal cord by two points of attachments caled the ______ roots
there are _____ pairs of cervical nerves. 8
there are _____ pairs of thoracic nerves. 12
there are ____ pairs of lumbar nerves. 5
there are ____ pairs of sacral nerves. 5
there is ____ pair of occygeal nerves. 1
Created by: airdude
 

 



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