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36 Cards in this Set

  • Front
  • Back
Central Nervous System Contains
Spinal Cord
Peripheral Nervous System Contains
Cranial Nerves
Spinal Nerves
Afferent Neurons
These are sensory neurons that transmit impulses to the spinal cord and brain from all parts of the body.
Efferent Neurons
These are motor neurons that transmit impluses away from brain and spinal column to all parts of the body.
Schwann Cells
These are cells of myelin, that are white and fatty.
Nodes of Ranvier
These are indentations between adjecent schwanns cells.
Glia or Neuro Glia
Known as nerve glue, special types of supporting cells.
These help hold nerve fibers together, and produce fatty myelin sheaths that evelopes nerve fibers.
These are microscopic spaces that seperate the axon ending of one neuron from the dendrites of another neuron.
Neuro Transmitters
Chemicals by which neurons communicate
Divisions of the Brain
Brain stem
Brain Stem Contains
Medulla Oblongata
Medullas oblongata
Two-way conduction pathway between the spiinal cord and highter brain centers; cardiac, respiratory, and vasomotor control center.
Two-way conduction pathway between areas of the brain and other regions of the body; influeneces respiration
Two-way conduction pathway; relay for visual and auditory impulses
hypothalamus (Diencephalon)
Regulation of body temperature, water balance, sleep-cycle control, appetite, and sexual arousal.
Thalamus (Deincephalon)
Sensory relay station from various body areas to cerebral cortex; emotions and alerting or arousal mechanisms.
Muscle coordination; maintenance of equilibrium and posture.
Sensory perception, emotions, willed movements, consciousness, and memory
Convolusions or Gyri
These are ridges and grooves in the outer surface of the cerebrum
Corpus Callosum
This divides the cerbrum into right and left halves
Spinal Cord
Seventeen to Eightenn inches long, lies inside the spinal coumn and inside spinal cavity and extends from occipital bone to the bottom of first lumbar vertebrae.
Cervical Nerves
Thoracic Nerves
Lumbar Nerves
Sacral Nerves
Dura Mater
This is the tough outer layer that lines the vertebral cannal.
Pia Mater
This is the inner most membrane covering the spinal cord.
Arachnoid Space Mater
This is the membrane between the dura and pia mater.
Infection or inflammation of the meninges.
This is a tough fluid membrane that surrounds the spinal cord and brain.
Autonomic Nervous System
Consists of motor neurons that conduct impulses from spinal cord or brain stem to cardiac, smooth, or glandular tissue.
Functions of Sypathetic Nervous System
Dilates, Stops Secretion, Dilates bronchials, Tachycardia, Secretes Addrenaline, Decreases stomach secretions, Decreases motility in intestine, Retains colon contents, and delays emptying of bladder.
Functions of Parasypathetic Nervous System
Constricts, Secretes Saliva, Constricts bronchials, bradycardia, increases stomach secretions, increases motility in intestine, emptys colon, emptys bladder.
Autonomic Neuro Transmitters
Theses are the chemical compounds released from the axon terminals of autonomic neurons.
Cholinergic Fibers
Axons are classified as these.