Part 1 Flashcards
Bundle of neural processes outside the central nervous syste; a portion of the perpheral nervous system
Nerve
The extensive, intricate network of structures that activates, coordinates, and controls all functions of the body
Nervous system
Charge difference between the fluid outside and inside a cell that results in differences in the distrubution of ions
Resting potential
Junction between two neurons or between a neuron and an effector organ, where neural impulses are transmitted by electrical or chemical means
Synapse
Type of lesion of the trigeminal nerve involving facial pain
Trigeminal Neuraglia
Rapid depolarization of the cell membrane that results in propagation of the nerve impulse along the membrane
Action Potential
Sensory nerve that carries informations from the periphery of the body to the brain or spinal cord
Afferent nerve
The loss of feeling or sensation resulting from the use of certain drugs or gases that serve as inhibitory neurotransmitters
Anesthesia
Type of unilateral facial paralysis involving the facial nerve
Bell’s Palsy
Motor nerve that carries information away from the brain or spinal cord to the perihery of the body
Efferent nerve
Loss of action of the facial muscles
Facial paralysis
Accumulation of neruron cell bodies outside the central nervous system
Ganglion
Supply of nerves to tissues or organs
Innervation
Cellular component of the nervous system that is individiually composed of a cell body and neural processes
Neuron
Chemical agent from the neuron that is discharged with the arrival of the action potential, diffuses across the synapse, and binds to receptors on another cell membrane
Neurotransmitter
Components of the cental nervous system (CNS)
Brain and spinal cord
Components of the peripheral nervous system (PNS)
Consists of nerves that extend from the brain and the spinal cord
Spinal nerves carry impulses to and from the
Spinal cord
Cranial nerves carry impulses to and from the
Brain
Afferent nerves are
Sensory nerves
Efferent nerves are
Motor nerves
Somatic nervous system is
Voluntary
Autonomic nervous sytem is
Involuntary
Sympathetic nervous system is
Fight or flight
Parasympathetic nervous system is
Rest and digest
Symptoms of the parasympathetic division
Blood pressure maintained
Respiratory rates are lower
Digestive tract is actively working
Skin is warm
Pupils are constricted
Heart sympathetic effect
Increases rate and force
Heart parasympathetic effect
Decease rate and steadies heart
Lungs sympathetic effect
Dialates bronchioles
Lungs parasympathetic effect
Contstricts bronchioles
Blood vessels sympathetic effect
Constricts blood vessels in non vital viscera, skin
Dilates skeletal muscles
Increases blood pressure
Blood vessels parasympathetic effect
No effect
Sweat glands sympathetic effect
Stimulates to procude perspiration
Sweat glands parasympathetic effect
No effect
Serum glucose level sympathetic effect
Increases