MEDICAL PHYSIOLOGY

Detailed explanation-1: -Answer. Explanation: Pain receptors, also called nociceptors, are a group of sensory neurons with specialized nerve endings widely distributed in the skin, deep tissues (including the muscles and joints), and most of visceral organs.

Detailed explanation-2: -Sensory neurons bring signals into the CNS, and motor neurons carry signals out of the CNS.

Detailed explanation-3: -If you touch a hot stove, sensory receptors in your fingertip sense the dangerous heat and convert this stimulus into an electrical signal. This signal leaves your fingertip via nerve cells called sensory neurons.

Detailed explanation-4: -For example, if you step on something sharp, the nerves in your foot send a pain signal up your spinal cord to your brain. When your brain recognizes the danger, it sends another signal down your spinal cord to the nerves in your leg and foot muscles, telling them to pull away from the object.

Detailed explanation-5: -Afferent neurons are neurons whose axons travel towards (or bringing information to) a central point, while an efferent neuron is a cell that sends an axon (or carries information) away from a central point.