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# Myelin Sheath Formation The image depicts the process of myelin sheath formation around an axon. It shows a series of cross-sections illustrating the steps involved. **Step 1:** * A neurolemmocyte starts to wrap around a 1-mm portion of an axon. **Step 2:** * The neurolemmocyte's cytoplasm an...

# Myelin Sheath Formation The image depicts the process of myelin sheath formation around an axon. It shows a series of cross-sections illustrating the steps involved. **Step 1:** * A neurolemmocyte starts to wrap around a 1-mm portion of an axon. **Step 2:** * The neurolemmocyte's cytoplasm and plasma membrane begin to form consecutive layers around the axon as the wrapping continues. **Step 3:** * The overlapping inner layers of the neurolemmocyte plasma membrane form the myelin sheath. **Step 4:** * Eventually, the neurolemmocyte cytoplasm and nucleus are pushed to the periphery of the cell to form the neurilemma. **Diagram Details:** The diagram shows the following: * **Axon:** The central, light-colored cylinder represents the axon. * **Neurolemmocyte:** The blue-toned structures that wrap around the axon. * **Nucleus:** The small, purple-toned structures within the neurolemmocytes. * **Myelin sheath:** The multiple concentric layers that form the myelin sheath around the axon. * **Cytoplasm of the neurolemmocyte:** The area within the boundaries of the neurolemmocyte and is located beside the axon. * **Neurilemma:** The outer layer that surrounds the myelin sheath The image displays different stages of the process, highlighting the progressive formation of the myelin sheath. The arrows indicate the direction of wrapping, and different labels differentiate the parts involved.