08 Cone & Rod Circuits

Question 1

19 - Which types of cells do rods contact?

Answer 1

Only H1 cells and Rod bipolar cells

Question 2

19 - Each H1 cells contacts about how many rods at a time?

Answer 2

About 700 rods at a time

Question 3

19 - T/F Each rod communicates with at least 2 horizontal cells in order to spread the signal to both sides of the periphery of where that rod is located.

Answer 3

True

Question 4

20 - T/F All rod bipolar cells are “on-cells”.

Answer 4

True

Question 5

21 - What type of amacrine cells connect rods to bipolar cone cells in order to communicate?

Answer 5

AII (A2)

Question 6

22 - Because of the sensitivity of rods - they produce a signal that is _________ times stronger than a cone.

Answer 6

100 times

Question 7

24 - What are the four types of ganglion cells?

Answer 7

1) Parasol ganglion cells
2) Midget ganglion cells
3) Blue-yellow ganglion cells
4) Biplexiform ganglion cells

Question 8

24 - 95% of the fovea will contain which type of ganglion cell?

Answer 8

Midget ganglion cells

Question 9

24 - Blue-yellow ganglion cells communicate with which type of cones?

Answer 9

S-cones

Question 10

25 - What does the neural signal depend on?

Answer 10

Changes in firing rate

Question 11

26 - What types of responses do ganglion cells have?

Answer 11

On- and Off- responses