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Remy May

Physiology weeks 7-13

QuestionAnswer
Exteroceptors- are located on or very near the body surface and respond most frequently to stimuli that arise external to the body itself. Receptors in this group are sometimes called cutaneous receptors because of their placement in the skin.
Visceroceptors (or interoceptors)- are located internally, often within the substance of body organs (viscera), and when stimulated provide information about the internal environment.
Proprioceptors- a special type of visceroceptor. They are less numerous and generally more specialized than other internally placed receptors, and their location is limited to skeletal muscle, joint capsules, and tendons.
Mechanoreceptors— activated by mechanical stimuli that in some way “deform” or change the position of the recep-tor, resulting in the generation of a receptor potential.
Chemoreceptors— activated by either the amount or the changing concentration of certain chemicals. Our senses of taste and smell depend on chemoreceptors.
Thermoreceptors— activated by changes in temperature.
Nociceptors- activated by intense stimuli of any type that results in tissue damage. The cause may be a toxic chemical, intense light, sound, pressure, or heat. The sensation produced is one of pain.
Photoreceptors— found only in the eye. Photoreceptors respond to light stimuli if the intensity is great enough to generate a receptor potential.
Osmoreceptors— concentrated in the hypothalamus and sense levels of osmotic pressure in body fluids. They are important in detecting changes in concentration of electro-lytes (osmolarity) in extracellular fluids and in stimulating the hypothalamic thirst center.
visceral pain- deep pain that develops more slowly over time. It originates in deeper body (visceral) structures and can be severe if caused by conditions such as intestinal obstruction or passage of a kidney stone or gallstone.
Created by: remym2546
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