Notes from Friday, Jan. 25 Write out everything in yellow! Thank you.

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Presentation transcript:

Notes from Friday, Jan. 25 Write out everything in yellow! Thank you.

The Meninges Dura 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

The Meninges Figure 13.25a CSF = cerebrospinal fluid

Dura mater is being peeled away in this photo.

Subdural Hematoma

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

ASCENDING - impulses travel to the brain (sensory) DESCENDING - impulses travel to the muscles (motor)

Spinal reflexes - reflex arcs pass through the spinal cord

THE BRAIN ANATOMICAL REGIONS o Cerebrum o Cerebellum o Brain Stem o Diencephalon

CEREBELLUM Balance and coordination

Figure 13.4 Write out the parts of the diencephalon and the brain stem!

1. Cerebral Hemispheres - left and right side separated by the Corpus Callosum - connects the two hemispheres Write this!

The Cerebral Hemispheres Figure 13.7b, c Know the Lobes of the brain and their function.

Take the Left Brain – Right Brain Test

Corpus callosum

3. Convolutions of the Brain - the wrinkles and grooves of the cerebrum Fissures = deep groove Sulcus = shallow groove Gyrus = bump Write these three words!!

4. Fissures – separate lobes Longitudinal fissure - separate right and left sides