Receptors Flashcards
Function of mechanoreceptor
detect movements, vibrations, or other mechanical disturbances
Function of chemoreceptor
detect the presence of chemical substances in the air (smell) or on substrates (taste)
Function of photoreceptor
detect the presence and quality of incident light (electromagnetic radiation)
function of ocellus
detect light intensity and motion
may be used in regulating daily and seasonal rhythms
function of compound eye
detect movement
ocelli
photoreceptor consisting of pigment cells and sensory neurons
compound eye
most successful and widespread made of ommatidia photoreceptor not focusable and do not form images well adapted to detecting movement
Giardia photoreceptor
eye cup = eye sport = ocelli
light intensity and direction
do not form images
Giardia chemoreceptor
auricles
Scallop photoreceptor
concave reflector eyes on along mantle
middle fold = sensory fold with eyes and sensory tentacles
cannot resolve shapes but can detect changing patterns of light and motion
Cephalopod
elaborate camera eyes
produce images
Types of arthropod eyes
Pigment-cup ocelli
Compound eyes