Week 8 Worksheet

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School

Iowa State University *

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Course

255

Subject

Biology

Date

Dec 6, 2023

Type

docx

Pages

4

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Week 8 Worksheet Fill out worksheet on your computer and upload to CANVAS before the due date **Lab instructors will award points based on a good-faith effort to fill out worksheet. They will NOT be grading for correctness. It is ultimately your responsibility to make sure your answers are correct so that this will be a useful study guide for your weekly test. Therefore, make sure you ask your instructor, undergrad TAs, and your peers for help when you need it. ** North Tables Neuron Models Electrical potentials are summed in the neuron and if they reach a threshold, an action potential is conducted away from the cell body starting at this structure: axon hillock Axons from other neurons synapse mostly with these structures: dendrites What is the name of the glial cells that wrap around the axon? What is the name of the structure these cells form? Schwann cells (neurolemmocytes) in PNS, oligodendrocytes in CNS. They form the myelin sheath In myelinated axons, action potentials “jump” between which structures? Nodes of Ranvier (neurofibril nodes) Fill out the numbered structures, or name the numbers 1. Axon hillock 2. Axon 3. Axon terminal 4. Dendrite 5. Neurolemmocyte 6. Node of Ranvier 7. Myelin sheath Spinal cord model The epidural space is between which two structures? Vertebrae and dura mater Is the Ventral Root an equivalent term to the Anterior Root or Posterior Root? Which term is equivalent to the Dorsal Root? Posterior root Name the labeled structures 1. Epidural space 2. Posterior root 3. Anterior root 4. Arachnoid 5. Dura matter 6. Pia matter
Meninges List the Meningeal layers from Superficial to Deep: dura mater, arachnoid mater, pia mater South Tables Brain Models External Features Fill out the numbered structures, or name the numbers 1. Primary motor area 2. Longitudinal fissure 3. Primary somatosensory area 4. Lateral fissure 5. Central sulcus Mid-sagittal Features Fill out the numbered structures, or name the numbers 1. Spinal cord 2. Thalamus 3. Corpus callosum 4. Pons 5. Choroid plexus and ventricle 6. Cerebellum 7. Midbrain Cerebral Regions Fill out the numbered structures, or name the numbers 1. Temporal lobe 2. Parietal lobe 3. Occipital lobe 4. Frontal lobe
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