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Notes from Friday, Jan. 25
Write out everything in yellow! Thank you.
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The MeningesDura mater - outermost layer
Arachnoid mater - no blood vessels, in between layer (resembles a spider web)
Pia mater -inner membrane, contains nerves and blood vessels to nourish cells
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The Meninges
Figure 13.25aCSF = cerebrospinal fluid
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Dura mater is being peeled away in this photo.
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Subdural Hematoma
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Spinal Cord
passes down the vertebral canal, has 31 segments (each with a pair of spinal nerves)
Cervical enlargement = supplies nerves to upper limbs (neck)Lumbar enlargement = supplies nerves to the lower limbs (lower back)FUNCTION: conducting nerve impulses, serves as a center for spinal reflexes
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ASCENDING - impulses travel to the brain (sensory)
DESCENDING - impulses travel to the muscles (motor)
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Spinal reflexes - reflex arcs pass through the spinal cord
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THE BRAIN
•ANATOMICAL REGIONS oCerebrumoCerebellumoBrain StemoDiencephalon
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CEREBELLUM
• Balance and coordination
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Figure 13.4
Write out the parts of the diencephalon and the brain stem!
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1. Cerebral Hemispheres - left and right side separated by the ....
2. Corpus Callosum - connects the two hemispheres
Write this!
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The Cerebral Hemispheres
Figure 13.7b, c
Know the Lobes of the brain and their function.
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Take the Left Brain – Right Brain Test
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Corpus callosum
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3. Convolutions of the Brain - the wrinkles
and grooves of the cerebrum
Fissures = deep groove
Sulcus = shallow groove
Gyrus = bump
Write these three words!!
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4. Fissures – separate lobes
Longitudinal fissure - separate right and left sides