Senses & perception Flashcards
What cornea do?
Bends light to help the eye focus
What pupil do?
Admits and regulates the flow of light to the retina
What iris do?
Controls how much light the pupil lets in
What lens do?
The lens works together with the cornea to focus light correctly on the retina
What retina do?
Photoreceptors in it turn the light into electrical signals
What optic nerve do?
Send signals to the brain
What three types of neurons are in the retina?
Photoreceptors, interneurons and ganglion cells
What rods do?
Allowing you to see in dim light
What cons do?
Pick up fine detail and color
What three types of cons people eye has?
Green, red, blue
What tympanic membrane do?
Makes waves
What hair cells do?
Make electrical signals from waves
What taste buds do?
Detect taste and send signals to cranial nerves
What olfactory bulbs do?
Detect taste and send signals to cerebral cortex
How we call myelinated nerve fibers with thick axon?
A-beta fibers
How we call thin,
unmyelinated axons?
C fibers
What nociceptors do?
Detect signals from damaged tissue or the threat of damage
What Pacinian and Meissner corpuscles do?
Sense of vibration and flutter
What Merkel’s disk do?
Sense of pressure
What Ruffini endings do?
Respond to slowly changing
indentations
Which area of brain is responsible for touch?
Somatosensory cortex
Which areas of brain are responsible for pain?
Somatosensory cortex, anterior cingulate cortex and insular cortex
