Senses systemBy Katie Ust

Mechanoreceptors Mechanoreceptors are sensory receptors

that respond to mechanical pressure or distortion

Sensors are located all over the body; in the skin, hair follicles, and mouth

Thermoreceptor Codes absolute and relative changes in

temperature They are located in various tissues such

as skin, the cornea, and the urinary bladder.

Chemoreceptor Detects chemical stimuli in the

environment Transduces a chemical signal into action

potential Examples are olfactory receptor neurons,

taste buds, carotid bodies and aortic bodies that detect change in oxygen

The chemoreceptor trigger zone is in the medulla of the brain.

Photoreceptors Capable of phototransduction Convert light into signals that stimulate

biological processes. Found in the retina

Pain Receptors Free nerve endings that warn of

potentially harmful changes in environment.

Located mostly in the epidermis and epithelial covering of certain mucous membranes.

Rhodopsin Located in the retina Responsible for the formation of

photoreceptor cells and the first events in the color of light

Uses cell signaling to absorb and translocate light

Sources Medical-

dictionary.thefreedictionary.com/pain+receptor

Medical-dictionary.thefreedictionary.com/mechanoreceptors

Medical-dictionary.thefreedictionary.com/thermoreceptors