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Central Nervous System (Drugs that affect the brain (cocaine (blocks…

- - - - controls voluntary actions of specific muscles or groups of muscles on the opposite side of the body
      - in front of central sulcus in precentral gyrus
    - - coordinates muscle movements for speech
    - - concerned with memory, emotions, reasoning, will ,judgement, intelligence, language comprehension
  - - - behind central sulcus in postcentral gyrus
      - receives impulses for touch, pain, ligaments being stretched, temperature
- - - - dark outer area consists of gray matter
      - contains cell bodies of 75% of all neurons in the nervous system
    - - separates brain into right and left cerebral hemispheres
    - - connects both hemispheres
    - - divides temporal lobe from frontal and parietal lobes
    - - divides frontal and parietal lobes
    - - separates cerebrum and cerebellum
  - - - surrounded by third ventricle
      - relay station for sensory impulses to cerebral cortex
      - plays a role in emotions, memory, awareness, and cognition
    - - under thalamus
      - controls regulation of eating and drinking
      - controls body temperature
      - regulation of consciousness, emotional and behavior, diurnal rhythms, synchronizes day and night cycle
    - - emotional aspects of behavior and aids in memory, the pleasure center
    - - hangs down anterior portion of hypothalamus
  - - - regulates cardiac center (heart rate), vasomotor center (constricts blood vessels), respiratory center (rate and depth of breathing)
      - other centers coordinate swallowing, vomiting, coughing, sneezing, hiccuping
    - - connects spinal cord with brain and links parts of brain with one another by way of tracts (nerve fibers within the CNS)
      - aid in control of breathing
    - - cerebral peduncles
        
        "little feet cerebrum"
      - corpora quadrigemina
        
        reflex center for movement in response to sound and visual stimuli
  - - - convolutions/bumps
    - - worm shaped structure between cerebral hemispheres
    - - grooves
    - - deeper grooves
    - - tree of life
      - white matter tracs
    - - connect cerebellum to other parts of brain
- - - - inflammation of meninges
  - - - area between arachnoid and pia mater, filled with cerebrospinal fluid
- - - - transmit sensory impulses toward CNS
      - have specialized receptor ends at tips of dendrites or the dendrites are in contact with specialized receptor cellsmin skin or sense organs
      - most are unipolar, some are bipolar
    - - transmit motor nerve impulses from CNS to effectors
    - - multipolar neurons in CNS that form links between other neurons