Question 1
Changes in proteins of the lens cause
◦ astigmatism.
◦ retinoblastoma.
◦ myopia.
◦ glaucoma.
◦ cataracts.
Question 2
Differences in intensity of a stimulus
◦ do not affect the impulse transmitted.
◦ are indicated by the number of nerves activated.
◦ control the part of the brain that receives the stimulus.
◦ are encoded in the frequency of action potentials on a single axon.
◦ are indicated by the number of nerves activated and are encoded in the frequency of action potentials on a single axon.