special senses notes Flashcards
What is the fibrous outermost tunic seen as the “white of the eye”?
Sclera
In what order does light pass as it enters the eye? (4 parts)
Cornea, aqueous humor, lens, vitreous humor
Which layer of the eye contains rods and cones?
Retina
What gender is most likely to have red/green colorblindness?
Men
What reflex occurs when the eye is suddenly exposed to bright light?
Photopupillary reflex
What is the actual name of the eardrum?
Tympanic membrane
Where are hair cells that function as hearing receptors located?
Cochlea
What is the inability to distant objects?
Myopia
What sense is associated with gustatory hairs?
Taste
What sense is associated with olfactory hairs?
Smell
Where are equilibrium receptors located?
Vestibular canals
What is the only special sense that is not fully formed at birth?
Sight
What receptors receive deep pressure signals in the skin?
Pancinan corpuscles
What part of the body should have the highest concentration of touch receptors?
Fingertips
What defective nerve cell channel results in the disorder congenital insensitivity to pain?
Sodium
What is the function of an Eustachian tube?
Drains fluid from the middle ear
What area of the brain responds to touch sensors?
Parietal lobe
Which cells respond to taste?
Gustatory cells
What is Ménière’s disease?
A disease characterized by progressive deafness and vertigo
What area of the brain deals with balance?
Cerebellum
Which cells respond to color?
Cones
What is a Cochlear implant?
A bionic ear that allows deaf individuals to “hear” through a computer and a processor
What is the layer in many animals’ eyes that aides in low light vision?
Tapetum Lucidem
What are white/black vision receptors?
Rods
Which receptors sense hot and cold?
Thermoreceptors
Describe the path a sound wave takes beginning with entering the ear and ending with stimulation of the cochlear nerve.
How does the body perceive vision? Discuss the role of the lens and the retina.
The light hits the cornea and goes through it to the lens. The lens reflects the image on the retina. The retina flips the image and processes it using rods and cones. **
