Lecture Quiz 7

A  rods stop releasing of inhibitory neurtransmitters

B  voltage-regulated calcium gates close

C  Na+ diffuses in and the rod cell is depolarized

D  light strikes rhodopsin causing c-GMP channels to close

E  voltage-regulated calcium gates close and rods stop releasing of inhibitory neurtransmitters

A  primary visual cortex

B  thalamus

C  visual association area

D  medulla oblongata

E  hypothalamus

A  TRUE

B  FALSE

A  neurons of the optic nerve do not produce an action potential

B  ganglion cells unable to produce an EPSP

C  rod cells are inhibited (hyperpolarized)

D  inhibition (hyperpolarization) of bipolar cells

E  rod cell release inhibitory transmitters

A  FALSE

B  TRUE

A  low sensitivity to light

B  contains the pigment rhodopsin

C  used for day vision

D  high visual acuity

E  most are found in the fovea centralis

A  FALSE

B  TRUE

A  light rays traveling through the curved portions of the lens are not refracted and light rays traveling through the center of the lens are refracted through the focal point

B  the image will be upside down

C  image will be at the intersection of the two light rays

A  FALSE

B  TRUE

A  odorants (air-borne chemicals) bind to surface receptors on the olfactory hairs

B  impulses travel to the olfactory bulb

C  an action potential occurs in the olfactory nerve

D  a receptor potential is generated

E  impulses travel to the thalamus and then to the olfactory area of the cerebral cortex

A  FALSE

B  TRUE

A  alkaloids

B  sugars and alcohols

C  salts

D  proteins

E  acids