Week 8 Worksheet 10

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Iowa State University *

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Biology

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Feb 20, 2024

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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: it begins at the 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? Oligodendrocytes wrap around the axon. They produce a fatty substance called myelin. In myelinated axons, action potentials “jump” between which structures? Nodes of Ranvier Fill out the numbered structures, or name the numbers 1. Cytoplasm of the neuron 2. Axon hillock 3. Dendrites 4. Axon 5. Mylien sheft 6. Nodes of Ranvier 7. Schwann cell Spinal cord model The epidural space is between which two structures? The dura mater and the vertebral wall. Is the Ventral Root an equivalent term to the Anterior Root or Posterior Root? Which term is equivalent to the Dorsal Root? The ventral root of a spinal nerve is considered the anterior root. Posterior root is equivalent to the dorsal root. Name the labeled structures 1. Epidural space 2. Denticulate ligament 3. Denticulate ligament 4. Arachnoid space 5. Dura matter 6. Pia matter
Meninges List the Meningeal layers from Superficial to Deep: The dura mater, the arachnoid mater, and the pia mater South Tables Brain Models External Features Fill out the numbered structures, or name the numbers 1. Parietal lobe 2. Longitudinal fissure 3. Precentral gyrus 4. Postcentral gyrus 5. central sulcus Mid-sagittal Features Fill out the numbered structures, or name the numbers 1. Medulla 2. Thalamus 3. Corpus Collosum 4. Pons 5. Choroid plexus 6. Cerebellum 7. Mid brain Cerebral Regions Fill out the numbered structures, or name the numbers 1. Frontal lobe cerebrum 2. Primary somatosensory cortex 3. Occipital lobe 4. Partial lobe of cerebrum
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