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4 general facts about brain
- *100 billion nuerons
- *60% fat
- *3lbs+
- *10% larger in males
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cranial first vesicles
forebrain-prosencephalon
midbrain-mesencephalon
hindbrain-rhombencephalon
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caudally
spinal cord is formed
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mesencephalon
- cerebral peduncle
- corpora quadrigemina
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myelencephalon
medulla oblongata
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1st meninges
- dura mater-tough mother
- *tough superficial layer
- *not attached to bone in spinal cavity
- *two layers
- -endosteal layer
- -meningeal layer
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2nd meninges
- Arachnoid layer
- *CSF found in sub-arachnoid space
- *Arachnoid granulations
- -found in venous sinuses
- -reabsorbs CSF into blood
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3rd meninges
- Pia Mater-delicate
- *attached to brain/spinal cord
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Cerebrum
functions in thought, memory, learning
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Frontal lobe (motor)
- conscious control of skeletal muscles
- *pre-frontal cortex
- -complex learing, judgment, long-term,planning,
- personality
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Parietal lobe (sensory)
-conscious of touch, pressure, pain, temp., numbers manipulation of objects.
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Occipital Lobe (visual)
-conscious of vision, dreams, seizures
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Temporal Lobe (audio/olfactory)
-conscious of sound and smell
- HIPPOCAMPUS
- -short/long term memory
- -area affected by alzheimers
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Gray matter vs. white matter
internal capsule
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