Card Set Information

2010-12-03 12:43:55
Brain CNS

Show Answers:

  1. What is the function of the Longitudinal Fissure?
    Separate the left and right hemispheres from eachother.
  2. What does the Frontal Lobe do?
    Voluntary motor functions, motivation, foresight, planning, memory, mood, emotion, social judgement, aggression.
  3. What does the Parietal Lobe do?
    Recieve and interpret signals for the general senses, taste and visual processing
  4. What does the Occipital Lobe do?
    Principal visual center of the brain
  5. What does the Temporal Lobe do?
    Hearing, smell, learning, memory and some aspects of vision and emotion
  6. Where is the Lateral Sulcus found?
    On the temporal lobe
  7. Where is the Central Sulcus located?
    Between the Parietal lobe and the Frontal lobe (between the postcentral gyrus and the precentral gyrus)
  8. What is the left hemisphere of the brain associated with?
    Language and Reasoning
  9. What is the right hemisphere of the brain associated with?
    Space and pattern preceptions, art, music and imagination
  10. What are gyri?
    The bumps found on the brain
  11. What are sulci?
    The grooves in the brain
  12. Where is the primary motor cortex?
    It is in the precentral gyrus
  13. Where is the primary somatosensory cortex?
    In the postcentral gyrus
  14. Where is the primary visual cortex generally located?
    The occipital lobe
  15. Where is the primary auditory cortex generally located?
    The temporal lobe
  16. What does the septum pellucidum divide?
    The two lateral ventricles
  17. What does the interventricular foramina divide?
    The two lateral ventricles and the 3rd ventricle
  18. What does the copora quadrigemina divide?
    The third and fourth ventricles
  19. What does the mesencephalic aqueduct connect?
    The third and fourth ventricles
  20. What does the corpus callosum do?
    Facilitate communication between the two hemispheres
  21. What is the general pathway of the reflex arc?
    Receptor -> Sensory Neuron -> Central Nervous System -> Motor Neuron -> Effector
  22. What occurs in a synapse?
    Neurotransmitters are released into the synaptic cleft to be recieved on the other side of the cleft to send the signal to the next neuron
  23. What is the difference between stretch reflexes and withdrawl reflexes?
    Withdrawl reflexes involve interneurons besides sensory and motor neurons
  24. What is the patellar reflex? What happens when it is stimulated?
    Results in extension of the knee joint
  25. What is the calcaneal tendon reflex and what happens when it is stimulated?
    Results in plantar flexion of the foot. Tests the tibial nerve
  26. What is the blinking reflex and what happens when it is stimulated?
    Flexes (closes) the eyelids. Keeps foregin particles out.
  27. What is the Plantar response/ Babinski reflexand what happens when it is stimulated?
    Results in dorsiflexion of big toes. Not usually present in adults but seen in newborns.
  28. What are the biceps and triceps reflexes and what happens when they are stimulated?
    Results in flexion and extension of the arm at the elbow joint.
  29. What are mechanoreceptors?
    Respond to light touch (tactile corpuscles) and deep pressure (Lamellated corpuscles)
  30. What are thermoreceptors
    They are associated with temperature changes
  31. What are nocireceptors?
    Neurons that respond to pain
  32. What are rods? What do they allow us to do?
    Allow us to see black and white and are more sensitive to light
  33. What are cones? What do they allow us to do?
    Allows us to see color and work best in bright light.
  34. What are the 3 parts of the outer ear?
    • Auricle
    • External acoustic meatus
    • Tympanic membrane
  35. What is the Auricle?
    The fleshy part of your ear on the outside
  36. What is the external acoustic meatus?
    The hole that sound goes through to get to your ear drum.
  37. What is the tympanic membrane?
    The ear drum
  38. What are the 3 bones of the middle ear?
    • Malleus = hammer
    • Incus = anvil
    • Stapes = stirrup
  39. What are the parts of the inner ear?
    • Cochlea
    • Semicircular canals
  40. What is the structural organization of the Nervous system?
    • Central Nervous System
    • Peripheral Nervous System
  41. What is the functional organization of the Nervous System?
    • Sensory Nervous System
    • Motor Nervous System
  42. What does the sensory nervous system do?
    Transmit signals from the PNS to the CNS (input) (afferent)
  43. What are the two divisions of the Sensory Nervous System?
    • Visceral Sensory Division
    • Somatic Sensory Division
  44. What does the Motor Nervous system do?
    Send signals from CNS to muscles and glands (output) (efferent)
  45. What are the two divisons of the Motor Nervous System?
    • Somatic Motor System (SNS)
    • Autonomic (ANS)
  46. What is a ganglia?
    Swelling in the nerve body where cell bodies of neurons are concentrated
  47. What is a nerve?
    A bundle of axons and connective tissues.
  48. What are axons on a neuron
    The long tail (output)
  49. What are dendrites on a neuron
    The parts closer to the body (input)