Test 2

Question 1

Sketch the 3 types of receptors and how they work

Answer 1

Stretch channels that let Na+ in when opened, chemoreceptors that work by activating Na+ channels with cAMP, and light detection channels that use rhodopsin with the hexagon thingy that straightens then kicks out to activate cAMP

Question 2

What is spontaneous activity and how does it work

Answer 2

Na sub v1.5 channels open at -70 mv which are too far apart to cause an AP by themselves but can cause an AP from stimulus that would be just under threshold

Question 3

What is range fractionation and what is the trade-off

Answer 3

See study guide. trade off is having higher acuity across a broad range but costs more cells to gain that acuity

Question 4

What is sensory adaption and what is the trade off

Answer 4

See study guide. trade off is being able to rapidly detect any decrease in stimulus but inability to recognize actual amount of stimulus

Question 5

What is signal averaging and what are some of the disadvantages of it

Answer 5

See study guide. Costs resources and space to make additional cells and its harder for a single sensory cell to induce another AP/sec

Question 6

Sketch the events that creat a circadian clock

Answer 6

See study guide

Question 7

Sketch a delay neuron circuit via a vision field

Answer 7

See study guide

Question 8

sketch a pattern generator to control a fish swimming

Answer 8

see study guide

Question 9

sketch divergence and convergence

Answer 9

see study guide

Question 10

sketch how a hearing system works

Answer 10

see study guide

Question 11

Sketch an organ for gravity detection

Answer 11

see study guide

Question 12

Sketch the T3 and T4 system

Answer 12

see study guide

Question 13

Sketch how T3 and T4 clearance works

Answer 13

see study guide

Question 14

Sketch a graph of how glucose levels are regulated

Answer 14

see study guide

Question 15

Sketcha graph of how calcium levels are regulated

Answer 15

see study guide

Question 16

Sketch how the GnRH system works in the brain

Answer 16

see study guide

Question 17

Sketch how a follice grows

Answer 17

see study guide

Question 18

Sketch what causes the Uterine lining to produce CG

Answer 18

see study guide

Question 19

Sketch how ovulation works

Answer 19

see study guide

Question 20

Sketch how the corpus luteum contributes to the GnRH system

Answer 20

see study guide

Question 21

Sketch a stacked graph of the hormone levels of the GnRH system

Answer 21

see study guide

Question 22

Draw the bacteria ruler

Answer 22

See study guide

Question 23

What is the difference between an agonist and an antagonist

Answer 23

agonist increases production while antagonist prohibits it

Question 24

How does E affect kisspeptin affect GnRH

Answer 24

Kiss positive cells have less E receptors so when there is a lot of it, there is a lot of GnRH produced. Kiss negative cells have the normal amount of E so when E is low GnRH is decreased.