Sensory organs Flashcards
Exteroceptive senses (proprioceptive senses)
Senses that perceive the body’s own position, motion, state
External senses
Include the traditional five: sight, hearing, touch, smell, taste.
Plus thermoception, magnetoception.
What do the following proprioceptive senses do? nociception, equilibrioception, proprioception.
Pain, balance, a sense of the position & movement of the parts of one’s own body
Interoceptive senses
Interoceptive senses are senses that perceive sensations in internal organs.
Through what parts of the eye does light travel
Light first passes through the cornea, then the aqueous humor, the pupil, the lens and through the vitreous humor after which it strikes the cone cells of the retina
ciliary muscle and fibers
Accommodation is achieved by the donut shaped ciliary muscle surrounding the lens and attached to it by the ciliary fibers
Fovea centralis
The central region within the retina specialized for sharp, detailed vision and color perception.
How is light turned into an neuro impulse?
Light strikes the rods/cone cells, potentials pass through a layer of ganglion cells and bipolar cells that transmit the impulses to the optic nerve.
Optic disc
It is where the optic nerve passes through (ganglion, bipolar cells, blood vessels gathered together). It is a blind spot.
pinna
Ear lobe
tympanic membrane
Ear drum
Ossicles
The 3 inner ear bones
perilymph
Inner ear fluid
Basilar membrane
A membrane in the cochlea (slakkenhuis)
What happens after the basilar membrane is vibrated.
This causes the basilar membrane of the cochlea and organ of Corti to “rise and fall” which in turn causes the hair cells of the organ of Corti to rub against the tectorial membrane that is located overhead
