Questions: These receive environmental information and convert them into impulses that are conducted to the central nervous system. myelin sensory receptors motor nerves effectors neuroglia

The answer is the second one: sensory receptors.

Explanation for each option:

1. Myelin: Myelin is a fatty substance that surrounds the axons of some nerve cells, forming an insulating layer. It is crucial for the proper functioning of the nervous system, but it does not receive environmental information or convert it into impulses.

2. Sensory receptors: Sensory receptors are specialized cells or structures that detect changes in the environment (such as light, sound, temperature, etc.) and convert these changes into electrical impulses. These impulses are then transmitted to the central nervous system for processing. Therefore, this is the correct answer.

3. Motor nerves: Motor nerves are responsible for carrying impulses from the central nervous system to effectors (muscles or glands) to produce a response. They do not receive environmental information.

4. Effectors: Effectors are muscles or glands that respond to impulses from motor nerves. They do not receive environmental information or convert it into impulses.

5. Neuroglia: Neuroglia, or glial cells, provide support and protection for neurons in the nervous system. They do not receive environmental information or convert it into impulses.

In summary, sensory receptors are the structures that receive environmental information and convert it into impulses that are conducted to the central nervous system.