Cos: Nervous System

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Anonymous
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130415
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Cos: Nervous System
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2012-01-25 01:17:49
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Cosmetology Nervous System
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Nervous System
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  1. What is the study of the nervous system?
    Neurology.
  2. What are the primary components of the nervous system?
    • Brain
    • Spinal Cord
    • Nerves
  3. What are the three subsystems of the nervous system and what are each responsible for?
    • Central/Cerebrospinal: all voluntary body functions.
    • Peripheral: carries messages to and from the central nervous systems.
    • Autonomic/Sympathetic: all involuntary body functions.
  4. What composes the central nervous system?
    • Brain
    • Spinal Cord
    • Cranial Nerves
  5. What composes the peripheral nervous system?
    Sensory and Motor nerves.
  6. What body systems does the autonomic nervous system operate?
    • Respiratory
    • Digestive
    • Circulatory
    • Excretory
    • Endocrine
    • Reproductive
  7. What controls all three subsystems of the nervous system?
    Brain.
  8. What is the average weight of a human brain?
    44-48oz.
  9. What are the 4 parts of the brain, which is each portion located and what does each portion do?
    • Cerebrum: upper front portion of brain, responsible for mental activity.
    • Cerebellum: occipital area below cerebrum, controls and coordinates muscle movement.
    • Pons: below cerebrum, connects the other parts of the brain to the spinal cord.
    • Medulla Oblongata: above pons, connects parts of the brain to the spinal column.
  10. What is the spinal cord made of?
    Long nerve fibers.
  11. Where does the spinal cord originate and where does it extend to?
    Originates at the base of the brain and extends to the base of the spine.
  12. How many pairs of spinal nerves are in the spinal cord?
    31
  13. What is the name for a nerve cell?
    Neuron.
  14. What are the parts of a nerve cell?
    • Nucleus
    • Cytoplasm
    • Membrane
    • Axon
    • Nerve Terminal
    • Dendrites
  15. What is the function of the axon OR nerve terminal?
    connects the neuron to muscles, organs and other nerves.
  16. What is the function of the dendrites?
    Short fibers that receive messages sent from the nerve cell.
  17. What is another term for sensory nerve and what do sensory nerves do?
    Afferent: carry messages to the brain and spinal cord, determine sense of smell, sight, touch, taste and hear.
  18. What are the receptors and where are they located?
    Nerve cells: in the skin, respond to outside stimulation.
  19. What is another term for motor nerves and what do motor nerves do?
    Efferent: carry messages from the brain to the muscles, causes muscles to expan and contract.
  20. What is a reflex action?
    An interaction of sensory and motor nerves.
  21. What are mixed nerves?
    A nerve that performs both sensory and motor functions.
  22. How many pairs of cranial nerves are there?
    12
  23. What is the Trifacial Nerve?
    • Largest Cranial Nerve.
    • Mixed Nerve.
    • 5th Cranial Nerve.
    • Responsbile for transmitting facial sensations to the brain and controlling the muscle movement of chewing.
  24. What are the three branches of the Trifacial Nerve and where is each branch located?
    • Opthalmic: top 1/3 of face.
    • Maxillary: middle 1/3 of face.
    • Mandibular: lower 1/3 of face.
  25. What is the nerve of the opthalmic branch that extends to the upper eyelid, eyebrow, forehead and scalp?
    Supraorbital Nerve.
  26. What is the nerve of the opthalmic branch that extends to the upper sides of the nose between the eyes?
    Supratrochlear Nerve.
  27. What is the nerve of the opthalmic branch that extends to the lower side of the nose and tip?
    Nasal Nerve.
  28. What is the nerve of the maxillary branch that extends to the side of the forehead and upper part of cheek?
    Zygomatic Nerve.
  29. What is the nerve of the maxillary branch that extends to the lower eyelid, side of the nose, upper lip and mouth?
    Infraorbital Nerve.
  30. What is the nerve of the mandibular branch that extends to the ear and up the temple?
    Auriculo Temporal Nerve.
  31. What is the nerve of the mandibular branch that extends to the lower lip and chin?
    Mental Nerve.
  32. What type of nerve is the facial nerve and which cranial nerve is it?
    Primary Motor Nerve: 7th Cranial Nerve.
  33. What branch of the facial nerve extends to the muscles behind and below the ear?
    Posterior Auricular Nerve.
  34. What branch of the facial nerve extends to the muscles of the temple, side of the forehead, eyebrow, eyelid and upper cheek?
    Temporal Nerve.
  35. What branch of the facial nerve extends to the upper muscles of the cheek?
    Zygomatic Nerve.
  36. What branch of the facial nerve extends to the muscles of the mouth?
    Buccal Nerve.
  37. What branch of the facial nerve extends to the muscles on the side of the neck?
    Cervical Nerve.
  38. What branch of the facial nerve extends to the muscles of the chin and lower lip?
    Mandibular Nerve.
  39. What cervical nerve extends up the back of the scalp to the top of the head?
    Greater Occipital Nerve.
  40. What cervical nerve extends into the muscles at the back of the skull?
    Lesser Occipital Nerve.
  41. What cervical nerve extends into the side of the neck and external ear?
    Greater Auricular Nerve.
  42. What cervical nerve extends from the side and front of the neck to the breastbone?
    Cervical Cutaneous Nerve.
  43. What type of nerves are the primary nerves of the hand and what is their function?
    Mixed Nerves: Transmit sensations to the brain and carry impluses from the brain the muscles.
  44. What primary nerve of the hand extends into the fingers?
    Digital Nerve.
  45. What primary nerve of the hand extends down the little finger side of the arm into the palm of the hand?
    Ulnar Nerve.
  46. What primary nerve of the hand extends down the thumb side of the arm into the back of the hand?
    Radial Nerve.
  47. What primary nerve of the hand extends down the mid-forearm into the hand?
    Median Nerve.
  48. How do massage manipulations cause muscles to expand and contract?
    stimulates sensitive nerve tissues resulting in nerve impulses that expand and contract corresponding muscles.

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