Vision Pathways
What part of the eye does light pass through first?
cornea
What vibrates when sound waves hit it?
eardrum
Taste buds detect these five basic tastes.
sweet, salty, sour, bitter, umami
What part of your brain maps the sense of touch?
somatosensory cortex
What type of photoreceptor helps you see in dim light?
rods
In which structure do hair cells turn vibrations into signals?
cochlea
This is the only sense that does not route through the thalamus first.
smell
Which body parts have the most touch receptors?
Lips and fingertips.
What part of the eye changes shape to help you focus?
lens
Name one of the three small bones in the middle ear
malleus, incus, and stapes
What structure contains taste buds?
The tongue
Which fibers carry fast, sharp pain?
A-delta fibers
Which type of photoreceptor helps you see color?
cones
What membrane inside the cochlea moves with sound and bends hair cells?
basilar membrane
What causes food to taste bland when your nose is congested?
Your sense of smell is reduced, so your brain loses the smell part of flavor.
What natural chemicals can your brain release to reduce pain?
Endorphins.