Chapter 6 Pt 1 Test

Question 1

Neural signals are carried from the retina to the lateral geniculate nuclei by the axons of ______ cells.

Answer 1

Retinal ganglion

Question 2

The axons of retinal ganglion cells leave the eyeball at the _______.

Answer 2

Blind spot

Question 3

The area of the retina that mediates high-acuity vision is the ______.

Answer 3

Fovea

Question 4

Cones are the receptors of the ______ system, which functions only in good lighting.

Answer 4

Photopic

Question 5

The retinal ganglion cells from the nasal hemiretinas decussate (cross over to the other side of the brain) via the ________.

Answer 5

Optic chiasm

Question 6

The photopigment of rods is _________.

Answer 6

Rhodopsin

Question 7

The most important organizational principal of the retina-geniculate striated system is that it is laid out ________.

Answer 7

Retinotopically

Question 8

Rhodopsin was implicated in scotopic vision by the fit between the __________ spectrum of rhodopsin and the scotopic spectral sensitivity curve.

Answer 8

Absorption

Question 9

The high degree of _________ characteristic of the scotopic system increases its sensitivity but decreases its acuity.

Answer 9

Convergence