206 Nervous System Worksheet Key

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North Carolina State University *

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206

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Biology

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Apr 3, 2024

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ANS 206 Nervous System Worksheet (10 points) Name _______TA KEY___________________________ Section__________TAs___________ 1. Name the two major divisions of the nervous system. List anatomic structures found within each division. (2 points) Central (Nervous System) – brain and spinal cord Peripheral (Nervous System) – spinal and cranial nerves -0.5 for missing “central” -0.5 for missing “peripheral” -0.25 (each) for missing brain, spinal cord, spinal, and cranial nerves, respectively (if miss all, - 1) 2. List the four parts of the brain stem as they appear (cranially to caudally). (2 points) Diencephalon, Midbrain, Pons, Medulla Oblongata (-0.5 points for each part) 3. Cerebrospinal fluid is produced in the __ Ependymal Cells or Choroid Plexus ______ of the nervous system. (1 point) -1 if wrong, (okay if they say “choroid plexus epithelium”) 4. Describe the anatomical arrangement of the three layers that make up the meninges. Name the meningeal spaces and mention their clinical applications (3 points) Dura mater is the outermost layer Arachnoid mater is the middle layer with weblike filaments Pia mater is the inner layer, very delicate (-0.33 each for incorrectly identifying each layer) Epidural Space – can administer sedatives/epidurals/anesthetics Subarachnoid Space – harvest CSF for diagnostic testing (-0.5 for name, -0.5 for usage)
5. Label this image of the ventricular system and identify the order of the movement of CSF fluid through the ventricular system. (2 points) -0.2 for every incorrect label Fourth Ventricle Cerebral Aqueduct Third Ventricle Interventricular Foramen Lateral Ventricle
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