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35 Cards in this Set

  • Front
  • Back
Specializes in treating diseases and disorders of the nervous system.
The study of diseases/disorders of the nervous system.
Sugery involving the brain, spinal cord, or peripheral nerves. / One who specializes in the surgery of the brain, spinal cord, or peripheral nerves.
Central Nervous System
Brain, Spinal cord
Peripheral Nervous System
12 prs. Cranial Nerves/ 31 prs. Spinal Nerves
CNS Responsibilites
Processing, storing, sensory and motor information, and controlling consciousness.
PNS Responsibilities
Transmitting sensory and motor impulses back and forth between the CNS and the rest of the body.
Divisions of the PNS
Somatic Nervous System
Voluntary control over skeletal muscle contractions
Autonomic Nervous System
Involuntary control over smooth muscle, cardiac muscle, glandular activity, and secretions in response to the CNS
Affrent Nerve/ Effrent Nerve
Carries impulses from the body to the CNS/ Carries impulses from the CNS to the muscles, glands
Sympathetic/ Parasympathetic
Regulates essential body functions (increasing heart rate, constricting blood vessels, fight or flight)/ (slows heart rate, slows heart rate)
Cell body
Structure that contains the nucleus and cytoplasm
Actual nerve cell that transmits the impulses of the nervous system. (cell body, axon, one or two dendrites)
Single, slender projection that extends from the cell body
Myelin Sheath
Covers axons and protects/ speeds up transmission of the impulses
White matter
Parts of the brain that are covered with the myelin sheath
Grey Matter
Not covered with Myelin Sheath
Branch from the cell body and conduct impulses toward cell body
Space between two nerves in which the impulse must cross
Chemicals that activate the transmission of nerve impulses across the synapse
Neuron - Affrent/ Efferent
Transmit impulses toward brain/spinal cord | transmits away from the brain and spinal cord
Connecting neurons that conduct impulses from afferent nerves to motor nerves
Special type of connective tissue for the nervous system
3 types of Neuroglia Cells
Astrocytes, microglia, and oligodendrocytes
Are star shaped cells with numerous radiating processes for attachment. They are the largest and most numerous. Only found in the CNS.
Blood brain barrier
Prevents harmful substances from the bloodstream into the brain tissue or the cerebrospinal fluid.
Engulf cellular debris, waste products, and pathogens with in the nerve tissue
Help form myelin sheath
Cord-like bundle of nerve fibers that transmits impulses to and from the brain and spinal cord to other parts of the body
Group of nerve cell bodies located outside of the central nervous system
Protective layers
-Dura mater
-Arachnoid membrane
-Pia mater
cerebral cortex
Outside of the cerebrum
Receives all sensory stimuli
Responsible for the peripheral nervous system, many sensory functions such as temp., sleep, appetite.