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CNS (Brain (Cerebellum (Superior cerebellar peduncle (Connects midbrain to…

- - - - Connects midbrain to cerebellum
      - sends motor info to cortex via this route
    - - connects pons to cerebellum
      - Receives motor info from cortex via this route
    - - Connects medulla oblongata to cerebellum
      - receives proprioception info from spinal cord via this route
  - - - Reticular formation starts here, involved in autonomic responses
      - Middle cerebellar peduncle connects to cerebullum
      - Pyramid tracts continue
    - - Houses respiratory center (breathing)
      - Houses Vasomotor sensor, regulates blood vessels (blood pressure)
      - Houses several nuclei
      - Autonomic cardio center
      - Base of brainstem
      - Pyramid tracts cross at decussation of the pyramids
      - Inferior cerebellar peduncle connects to cerebellum
    - - Involved in fight or flight mode
      - Cerebral penduncle (pyramid tracts come from here) connects brainstem to cerebrum
      - Has nuclei
      - Superior cerebellar peduncle connects to cerebellum
      - Corpora quadrimina
        
        grouping of 4 bumps on posterior side
        
        Inferior colliculi
        
        bottom 2 bumps
        
        responsible for auditory reflexes
        
        Superior colliculi
        
        top 2 bumps
        
        responsible for visual reflexes
    - - group of nuclie in brainstem
      - found in pons and medulla
    - - Large tracts that connect brainstem to cerebrum and cerebellum
    - - Runs along brainstem
      - carries somatic motor signals
      - is a tract
      - decussation of pyramids is responsible for opposite side of body cerebral hemisphere control
  - - - Goes from cortex to brain stem and spinal cord
      - Runs vertically
      - Relays sensory and motor info
    - - Runs between various cortex
      - Remains in the same hemisphere
    - - Tracts that run between hemispheres
      - Corpus callosum is longest/largest one
  - - - Pineal gland, posterior bulb of thalamus
      - Secretes melatonin, which makes you sleepy
    - - all sensory signal to cortex are relayed here
      - Can dampen or amplify signals
      - Collection of nuclie
    - - controls and regulates autonomic nervous system
      - controls endocrine system
      - controls drive, motivation, hunger, thirst ect.
      - controls sleep cycles
      - Part of memory formation
      - Part of limbic system
  - - - Insula
        
        Deep to the other lobes
        
        Contains the viceral sensory cortex
        
        Contains the taste sensory cortex
      - Temporal
        
        Contains primary auditory cortex
        
        Contains primary olfactory cortex
        
        Responsible for recognition of faces and objects
        
        Part of memory
        
        emotional processing happens here (limbic system)
      - Perietal
        
        Primary samatosensory cortex
        
        Located in the Postcentral Gyrus
        
        Receptors sensory can be mapped to specific areas of cortex for specific body parts
        
        Processes al somatic sensory info and gives awareness of itl
        
        Processes sensory info
      - Occipital
        
        Posterior lobe
        
        contains primary visual cortex
      - Frontal
        
        Responsible for advanced thinking such as planning decision making, memory tasks and problem solving (prefrontal lobe)
        
        Primary Motor cortex
        
        Located in the Precentral gyrus
        
        Controls all voluntary muscle movement in the body
- - - - Carries visceral and somatic sensory info from body to the brain
    - - Carries visceral and somatic motor signals from the brain to the body
      - None in the dorsal funiculus
  - - - Carries motor signals from spinal cord to the body
    - - Posterior root ganglion
        
        Collection of unipolar/sensory neuron cell bodies in the posterior root
      - Carries sensory info to the spinal cord