parts of the eye
What does the optic nerve do?
carry neural impulses from the eye to the brain
what does the wavelength of a light wave determine in regards to what we see?
hue or color
movement of the fluid in the cochlea causes ripples in what membrane that lines the bottom of the cochlea?
basilar membrane
the wavelength or frequency of sound waves determines the __________ of a sound while the height or amplitude of the waves determines ___________ of a sound.
pitch; loudness
what are our 5 taste sensations?
sweet, sour, salty, bitter, umami
what is the part of the eye that light first hits? (it is also the protective layer covering the pupil & iris)
cornea
which theory of color vision says we have 3 different color receptors sensitive to red, green or blue and that, when stimulated together, allow us to see all colors?
young-helmholtz trichromatic theory
which part of our ear funnels sound waves to the ear drum?
auditory canal
sensorineural hearing loss is the most common form of hearing loss and the result of prolonged exposure to loud noise. this type of hearing loss is caused by damage to what part of the ear?
the cochlea’s hair cells or auditory nerve
what is the gate-control theory of pain?
the spinal cord contains a neurological “gate” that blocks or allows pain signals to pass on to the brain
what is the adjustable opening in the center of the eye called?
pupil
the amplitude of a lightwave determines...
the intensity of the color we perceive; i.e. how bright or dull it is
what is another word for 'ear drum'?
tympanic membrane
what theory says that we hear different pitches because different sound waves trigger activity at different places along the cochlea’s basilar membrane?
place theory of discriminating pitch
what are our 2 chemical senses?
taste & smell
the lens changes its shape and curvature in a process called accommodation to help focus an image on what part of the eye?
the retina
what happens to lightwaves in the retina?
they are turned into neural impulses by the rods and cones in the retina
what are the ossicles? what do they do?
smallest bones in the body; located in the middle ear; transfer vibrations from ear drum to the window of the cochlea
When you listen to music, the sound waves cause your _____ to vibrate first.
eardrum
Inside each of the bumps on our tongue, there are over 200 ____________. Inside of those, there are 50-100 ___________.
taste buds/ taster bud pores; taste receptor cells
which of our eyes' photoreceptors detect black & white, are necessary for peripheral vision & allow us to see in dim light?
rods
What controls the size of the pupil?
the iris
what are the three divisions of the ear? which part contains the cochlea?
outer, middle and inner ear; inner ear
movement of which cells that line the basilar membrane triggers a neural impulse that is sent through the auditory nerve to the temporal lobe of the brain?
hair cells
what is kinesthesia?
our system for sensing the position and movement of individual body parts; enables voluntary movement