Senses system By Katie Ust. Mechanoreceptors  Mechanoreceptors are sensory receptors that respond to mechanical pressure or distortion  Sensors are.

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Presentation transcript:

Senses system By 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+re ceptor  Medical- dictionary.thefreedictionary.com/mecha noreceptors  Medical- dictionary.thefreedictionary.com/thermor eceptors

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