Special Senses Flashcards
How can our receptors be classified?
Location, Structural Complexity, & Type of Stimulus
What are the 5 classes of receptors?
Mechanoreceptors, Thermoreceptors, Photoreceptors, Chemoreceptors, Nocireceptors,
What type of receptor reacts to light?
Photoreceptor
What type of receptor reacts to temperature?
Thermoreceptor
What type of receptor reacts to taste?
Chemoreceptor
What type of receptor reacts to mechanical forces?
Mechanoreceptors
What type of receptor reacts to pain?
Nociceptors
What is adaptation?
This is when a receptor becomes less and less responsive to stimuli, which means that it adapts to it.
What type of receptor does not typically adapt?
Nociceptors, or pain receptors do not typically adapt.
What is very adaptable?
Smell
What are 2 main types of receptors?
Unencapsulated and Encapsulated
Are Merkel’s Discs found in unencapsulated or encapsulated receptors?
Unencapsulated
What are Merkel’s Discs?
These are disc shaped cells found in the epithelium, often on fingertips, that detect soft touches on the skin.
What are root hair plexuses?
These are found in unencapsulated endings and are free nerve endings that are wrapped around hair follicles
Where are Messiner’s Corpuscles found?
Encapsulated Endings