pain near the body surface 

temperature 

balance

pressure 

touch 

Principally on A-alpha neurons with input from slowly adapting terminals

Principally on A-alpha neurons with input from rapidly adapting terminals

Principally on A-alpha neurons with large receptive fields

Principally on A-beta neurons with small receptive fields

Principally on A-alpha neurons with small receptive fields

Cutaneous neurons which receive input from Merkel's disks

Cutaneous and deep located neurons which receive input from Merkel's disks, Meissner's corpuscles and Pacinian corpuscles

Deep located neurons which receive input from Merkel's disks and Meissner's corpuscles

Cutaneous and deep located neurons which receive input from Merkel's disks

Cutaneous neurons which receive input from Pacinian disks

Found at the base of hairs in the skin

Rapidly adapting receptors found superficially in the skin

Slowly adapting receptors found superficially in the skin

Rapidly adapting receptors found deep in the skin

Slowly adapting receptors found deep in the skin

thermoreceptor 

photoreceptor 

mechanoreceptor

chemoreceptor 

all of the choices 

They only have one photopigment, called Rhodopsin.

They have a less efficient light-activated enzyme cascade.

They only absorb light at one wavelength.

They have less photopigment than cones.

They recover to be more sensitive than cones.

are equal across the retina.

 are smallest in the region of the retina with highest visual acuity.

are smallest at the optic disk and largest at the fovea.

are largest in the peripheral retina and smallest at the optic disk.

are smallest in the peripheral retina and increase as you move to the fovea.

bipolar cells 

ganglia

rods

pupils

cones

Depends on the Na+/K+ pump in the inner segment of photoreceptors

Depends on blocking the influx of Ca++ into photoreceptors

Depends on the standing current flow in photoreceptors

Depends on allowing the influx of K++ into photoreceptors

Depends on activating more PDE