AN SC 310

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AN SC 310
2013-09-27 21:26:48
AN SC 310

Lab 1
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  1. What  is the predominant portion of the brain?
    the cerebrum
  2. What diviodes the brain into 2 central hemispheres?
    the longitudinal cerebral fissure
  3. fissures
    deeper furrows on the surface of the cerebrum
  4. sulci
    shallow furrows on the surface of the cerebrum
  5. gyri
    ridges or convulsions on the surface of the cerebrum
  6. what are the 3 principal fissures of the human cerebrum?
    • 1. central sulcus (fissure of Rolando)
    • 2.lateral cerebral fissure (fissure of sylvius)
    • 3. paretooccipital fissure
  7. what are the four lobes?
    • 1. frontal lobe
    • 2. occipital lobe
    • 3. temporal lobe
    • 4. parietal lobe
  8. What part of the midbrain is associated with optic tracts?
    the superior colliculi (optic lobes)
  9. why is the coliculi important to animals?
    they are important analytical centers concerned with brightness and sound discrimination
  10. what does the pineal gland do?
    • - thought to be an evolutionary remnant of the third eye that exists in certain reptiles
    • - produces melatonin (sleep inducer)
  11. Contains fibres that connect parts of the cerebellum and medulla with the cerebrum
    Pons Varolii
  12. What does the Medulla Oblongata do?
    contains grey matter that control the hearth, respiratory system, and vasomotor reactions
  13. What is the interbrain called?
    The diencephalon
  14. what part of the brain contains the mammillary bodies, infundibulum, and part of the hypophysis?
  15. Hypopthysis is also called this
    Pituitary Gland
  16. Somatomotor Area
    • - occupies the surface of the precentrial gyrus of the frontal lobe
    • - electrical stimulation of this area in a consious human results in movement of specific muscular groups
  17. Premotor Area
    exerts control over the motor area
  18. somatosensory area
    functions to localize very precisely those points on the body where sensations of light touch and press originate

    assists in determining organ position
  19. Motor Speech Area
    exerts control over the muscles of the larynx and tongue that produce speech
  20. Visual Area
    recieves impulses from the retina via the thalamus.  Distruction of this area causes blindness
  21. Auditory Area
    responsible for hearing and speech understanding
  22. Olfactory Area
    recognizes varios odors

    tumors of this area cause people to experience nonexistant odors or varios kinds, both pleasant and unpleasant
  23. Association Areas
    lend mending to what is felt, seen, or heard
  24. Common Integrative Area
    the integration of information from the 3 association areas and the olfactory and taste centers is achieved