ANATOMY

Detailed explanation-1: -A receptor cell converts the energy in a stimulus into an electrical signal. Receptors are broadly split into two main categories: exteroceptors, which receive external sensory stimuli, and interoceptors, which receive internal sensory stimuli.

Detailed explanation-2: -The conversion from sensory stimulus energy to action potential is known as transduction.

Detailed explanation-3: -photoreceptor: A specialized neuron able to detect and react to light.