ANATOMY

Detailed explanation-1: -The environment is full of sensory stimuli/ information which we pick up through sensory receptors all over our body. These sensory receptors are mainly concentrated in our hands, feet, lips, mouth, tongue, eyes, ears, nose and skin. There are seven different types of receptors related to each of the seven senses.

Detailed explanation-2: -Unipolar cell bodies of sensory neurons are located within sensory ganglia which may be in the dorsal root of the spinal cord or along cranial nerves. The receptive field of the neurons limits the ability of the sensory system to relay environmental information.

Detailed explanation-3: -Classification by type of stimulus detected: Mechanoreceptors respond to physical force such as pressure (touch or blood pressure) and stretch. Photoreceptors respond to light. Thermoreceptors respond to temperature changes.

Detailed explanation-4: -More precisely, all sensory input is into the alar plate of the rhombencephalon or the alar plate of the midbrain (vision) or the forebrain (olfaction).