1.) Consider any spinal nerve. You have learned that a nerve is merely a bundle
ID: 49166 • Letter: 1
Question
1.) Consider any spinal nerve. You have learned that a nerve is merely a bundle of axons exterior to the CNS. Therefore, if you say “you’re getting on my nerves,” and mean it, then addition to having become irritated, you have remained conscious after experiencing serious physical trauma. You have also learned that any given axon within a nerve transmits action potential in one direction only. What term is used to describe the direction in which motor neuron action potentials travel?
a.) efferent b.) afferent
2. Which structure has the largest diameter?
a.) nerve fascicle b.) nerve
3. Which type of glial cell is responsible for myelinating axons anywhere within the CNS?
a.) oligodendrocyte b.) Schwann cell
Explanation / Answer
1.
a.) Efferent
In the systema nervosum, motorial nerves, otherwise called effector neurons, carry nerve impulses removed from the central systema nervosum to effectors like muscles or glands
2.
b.) nerve
A nerve fascicle is a small nerve fibres bundle
3.
a.) oligodendrocyte
Oligodendrocytes are cells that coat axons within the central systema nervosum (CNS) with their plasma membrane, forming a specialised membrane differentiation referred to as medulla, manufacturing the questionable sheath. The sheath gives insulation to the nerve fibre that permits electricalsignals to propagate a lot of with efficiency whereas Schwann cells provide myelination to axons within the peripheral systema nervosum
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