The spinal cord's outer section is made up of _____ and the inner section is made up of _____.

• A. bone; synaptic vesicles
• B. somatic cells; dendrites
• C. bone; axons and nerves
• D. myelinated axons and nerves; the cell bodies of neurons

Answer: (D)

Verified step by step guidance

1. Understand the structure of the spinal cord: The spinal cord is a crucial part of the central nervous system, responsible for transmitting signals between the brain and the rest of the body.
2. Identify the outer section of the spinal cord: The outer section is primarily composed of myelinated axons, which are responsible for the fast transmission of electrical signals.
3. Identify the inner section of the spinal cord: The inner section consists of the cell bodies of neurons, which are involved in processing and relaying information.
4. Differentiate between myelinated and unmyelinated structures: Myelinated axons have a protective sheath that speeds up signal transmission, while cell bodies are unmyelinated and are involved in processing information.
5. Recognize the correct terminology: The outer section is made up of 'myelinated axons and nerves,' and the inner section is made up of 'the cell bodies of neurons.'