MEDICAL PHYSIOLOGY

Detailed explanation-1: -Afferent or sensory neurons collect stimuli received by receptors throughout the body, including the skin, eyes, ears, nose, tongue as well as pain and other receptors in the internal organs. Sensory information is transmitted to the central nervous system, which includes the brain and spinal cord.

Detailed explanation-2: -Thalamus: The thalamus is the relay center of the brain. It receives afferent impulses from sensory receptors located throughout the body and processes the information for distribution to the appropriate cortical area.

Detailed explanation-3: -The spinal cord is an extension of the brain. It carries messages to and from the brain via the network of peripheral nerves connected to it. Nerves also connect the spinal cord to a part of the brain called the brainstem.

Detailed explanation-4: -Sensory neurons are the nerve cells that are activated by sensory input from the environment-for example, when you touch a hot surface with your fingertips, the sensory neurons will be the ones firing and sending off signals to the rest of the nervous system about the information they have received.