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Massage-Nervous Sys.

Stack #21318

Nervous Sys.-Ques.Nervous Sys.- Answers
What are the main functions of the nervous system? Communication & control.
The nervous system is geographically divided into 2 parts. What are those parts? Central nervous system (CNS) & Peripheral Nervous System (PNS).
What body parts make up the CNS? Brain & spinal cord (the CaptaiNS).
What body parts make up the PNS? Cranial & spinal nerves and their branches (the PeoNS).
What is the term describing the axons (fibers) that bring sensory information to the CNS? Afferent.
What is the term describing the axons (fibers) that bring sensory information out of the CNS? Efferent or motor.
The efferent (or motor) fibers are functionally divided into what? Somatic nervous system & the autonomic nervous system.
What organs/body parts does the somatic nervous system supply information to? Skeletal muscle.
What organs/body parts does the autonomic nervous system supply information to? Smooth muscle, cardiac muscle, & glands.
What are the nerve cells that transmit information? Neurons.
What cells nurture & support the neurons? Neuroglia.
What part of a neuron receives information from other neurons? Dendrites.
What carries the nerve impulse to the terminal ending of the neuron where it communicates with another neuron or a body part/organ? Axon.
What is the junction (or gap) between 2 neurons? Synapse.
What is another term for the nerve impulses as self-propagating waves of depolarization that travel along the membrane of the neuron? Action potentials.
What speeds the conduction time of the action potential and why? Schwann cells because they surround many of the axons outside the CNS & create a sheath of myelin to insulate the cell membrane.
What are the receptors endings in the PNS that interpret pressure? Mechanoreceptors.
What are the receptors endings in the PNS that interpret chemical compounds (taste/smell)? Chemoreceptors.
What are the receptors endings in the PNS that interpret temperature? Thermoreceptors.
What are the receptors endings in the PNS that interpret pain? Nociceptors.
What are the receptors endings in the PNS that interpret light? Rods & cones.
What are the receptors endings in the PNS that interpret body & body part positions in space? Proprioceptors.
What's the term for stereotyped, predictable responses to stimuli which are integrated at the spinal level (meaning without bringing the brain into it)? Spinal reflexes (aka knee jerk reaction)
There are 3 layers of connective tissue (meninges) wrapping the brain and spinal cord. What are they in order from the innermost to outermost layer? Pia mater, arachnoid mater, & dura mater.
What part of the brain consists of the medulla, pons, & mid-brain and contains vital centers for cardiac & respiratory rhythms & vasomotor control? Brainstem.
What part of the brain includes the thalamus & hypothalamus? Diencephalon.
What part of the brain associates emotion with sensation? Thalamus.
What part of the brain is a tiny brain unto itself that integrates the nervous & endocrine sys. & controls sleep,rage,aggression, etc.? Hypothalamus.
What part of the brain is the highest and newest part allowing thinking, will, decision, seeing, etc.? Cerebrum.
What part of the brain allows for smoothly coordinated movements, equilibrium, & posture control? Cerebellum.
What division of the autonomic nervous sys. is connected to the thoracic & lumbar regions of the spinal cord and initiates the "fight or flight" reaction? Sympathetic.
What division of the autonomic nervous sys. is connected to the cranial & sacral regions of the spinal cord & initiates the "rest & repose" reaction? Parasympathetic.
What is the function of the Autonomic nervous system? To maintain or quickly restore homestasis.
Created by: ghart
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