Question

responses from reflex are faster than reflexes from the brain. why?​

Answer 1

Answer:

Iɴ ᴀ ʀᴇғʟᴇx ᴀʀᴄ, ᴀɴ ᴀᴄᴛɪᴏɴ ᴘᴏᴛᴇɴᴛɪᴀʟ ɴᴇᴠᴇʀ ᴛʀᴀᴠᴇʟs ᴛᴏ ᴛʜᴇ ʙʀᴀɪɴ ғᴏʀ ᴘʀᴏᴄᴇssɪɴɢ, ᴀɴᴅ sᴏ ʀᴇsᴜʟᴛs ɪɴ ᴀ ᴍᴜᴄʜ ϙᴜɪᴄᴋᴇʀ ʀᴇᴀᴄᴛɪᴏɴ. Wʜᴇɴ ᴀ sᴛɪᴍᴜʟᴜs (A) ɪs ᴇɴᴄᴏᴜɴᴛᴇʀᴇᴅ, ᴛʜᴇ sɪɢɴᴀʟ ғʀᴏᴍ ᴛʜᴀᴛ sᴛɪᴍᴜʟᴜs ᴡɪʟʟ ᴛʀᴀᴠᴇʟ ᴜᴘ ᴛʜᴇ sᴇɴsᴏʀʏ ɴᴇᴜʀᴏɴ (B, ɪɴ ɢʀᴇᴇɴ) ᴛᴏ ᴛʜᴇ sᴘɪɴᴀʟ ᴄᴏʟᴜᴍɴ (C).

Answer 2

In a reflex, an action potential never travels to the brain for processing, and so results in a much quicker reaction. When a stimulus is encountered, the signal from that stimulus will travel up the sensory neuron to the spinal column .