Question

Tissues release ---------- and stimulate nociceptors to send impulses to the brain that result in the feeling of pain. A) Endorphins

B) Neurotransmitters
C) Hormones
D) Enzymes

Answer 1

Nociceptors are receptor cells responsible for transducing pain stimuli, which are activated by various potentially damaging stimuli. When tissues are stressed or damaged, they release chemicals that stimulate nociceptors to send impulses to the brain, resulting in the sensation of pain.

Step-by-step explanation:

Nociceptors are responsible for transducing pain stimuli. These specialized receptor cells are activated by mechanical, chemical, or thermal stimuli beyond a certain threshold.

When tissues are stressed or damaged, they release chemicals that activate nociceptors. These activated nociceptors then send signals to the brain, resulting in the sensation of pain.

Examples of chemicals released by damaged tissues include cytokines, serotonin, and prostaglandins. These chemicals stimulate nociceptors to send impulses to the brain, leading to the feeling of pain.