Lab 1: Brain Organization Meninges/ Ventricles Flashcards

1
Q

what are Gyrus?

A

they are the ridges of the brain, they contain cell bodies of the neurons, dendrites, and synapses

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2
Q

What is the Sulcus?

A

the grooves of the brain. The deeps the grooves the more cortical brain depth

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3
Q

what is the sensory cortex responsible for?

A

receiving and processing sensory information from across the body such as touch, temperature, and pain

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4
Q

what is the parietal lobe vital for?

A

sensory perception and integration including taste, hearing, sight, touch and smell

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5
Q

what do the ventricles house?

A

the cerebral spinal fluid

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6
Q

what connects the 3rd and the 4th venticle?

A

the cerebral aqueduct

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7
Q

what produces CSF

A

the choroid plexus

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8
Q

where is CSF reabsorbed

A

through the arachnoid granulations into the superior sagittal sinus at the top of the falx cerebri

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9
Q

CSF circulation

A

-produced int he choroid plexus
-Lateral ventricles
-Foramen of Munroe
-the 3rd ventricle
-cerebral aqueduct
- 4th ventricle
-foramen of luscjke and magendie
-subarachnoid space
-arachnoid granulations to the dural venous sinus

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10
Q

what are the layers of the meninges

A

1) dura matter
2) arachnoid matter
3) pia matter

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11
Q

purpose of the meninges

A
  • protect the brain and spinal cord
    -support for important veins, arteries, and sinuses
    -enclose the fluid filled cavity Subarachnoid Space containing the CSF
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12
Q

Parts of the Dura matter

A
  • Falx cerebri
    -Tentorium Cerebelli
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13
Q

what does the falx cerebri separate?

A

the two cerebral hemispheres

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14
Q

what does the Tentorium cerebelli encase?

A

the cerebellum

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15
Q

what is the supplementral motor area function

A

planning of movement, planning of sequences of movement, the coordination of the two sides of the body

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16
Q

where does decussation occur in the lateral corticospinal tract?

A

the cervicomedullary junction (pyramids of the medulla)

17
Q

what percent of the anterior corticospinal tract stays unilaterally and where does that intervation end?

A

10% and ends at the mid thoracic area

18
Q

what is the brain blood barrier (BBB)

A

semi-permeable and allows for some materials to cross but prevents others from crossing

19
Q

what are tight junctions purpose

A

protect the brain from “foreign substances” in the blood that may injure the brain

20
Q

what do tight junctions within the choroid epithelim prevent

A

the passage of cells (virus, bacteria, and fungus) to prevent infections

21
Q

what types of molecules are able to penetrate into the brain from the BBB

A

lipid soluble molecules