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| back/ top side belly or bottom side |
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3 layers protecting and covering B and scord,
1. dura mater 2. arachnoid membrane 3. pia mater |
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| CNS- S.cord- B- - Hind/ mid/ foreB |
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somatic-- afferent---efferent
---autonomic--- sympathetic--(aff--eff)---parasympathetic-- (aff---eff) |
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B and S cord
contains 99? of all neurons/nerve cells in the body (100 billion; glia 10-15x) |
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connects CNS to muscles, glands and organs
Symp (acute activation or chronic stress) (afference to B, efferent away from)
parasym (reg. normal body functions) |
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31 pairs, sensory afferents: dorsal root; unipolar
motor efferents: ventral root; multipolar |
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respiration, heart pressure, blood presure, arousal
vomiting , coughing, sneezing
movement
relays info., visual and audiotry info. processing
- has Reticular Formation (-regs. B arousal, in medulla and pons) |
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| relays info., visual and audiotory processing |
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| learning, memory, cognition, motivation, emotion, reward |
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| Divisons of the audult human brain |
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FOREBRAIN- telecephalon, diencephalon
MIDBRAIN- Mesencephalon
HINDBRAIN- Metencephalon
myelencephalon |
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FORE- thalamus, hypothalamus under thalamic tissue
MIDB- 2 bumps superior and inferior colloculi
HINDB- Pons, Medulla, Spinal Cord |
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| Midbrain: Mesencephalon functions |
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- neural pathways between forebrain and spinal cord or hindbrain
- monoamine neuron cell bodies/clusters
(speacilize in making monoamine neurotrans. like DA)
- inferior colliculi- auditory info processing
- superior colliculi- visual processing (these two form 'tectum'/ 'roof' dorsal)
tecmentum- midbrain, ('floor'- ventral)
cerebellum- larger in animals with more move. and faster |
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volume increases because..
-cell proliferation
-cell differentiation (synaptic pruning)
- cell migration
-reduction in neurons as we grow
(we are all forebrain baby) |
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cell clusters...
nuclei IN CNS
ganglia OUTSIDE CNS |
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| Diencephalon 3 parts and location |
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thalamus
hypothalamus
pituitary
-in forebrain |
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-sensory processing
-motivated beavior
-hormonal signaling which interacts w behav.
- the 'between brain' that integrates sensory and motor info. on the way to the cerebral cortex
- they activate one another (thalamus-->putitary-->stress release in PNS--->hypo. to shut it down i.e.) |
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