Week 5

Question 1

What are the general features of a sensory curve

Answer 1

• sinusoidal sensitivity curve

- band width formation

Question 2

what is implied by a sinusoidal sensitivity curve

Answer 2

• there is a threshold of sent
• there is some amount of stimulus that does not illicit a response
• one receptor will likely be sensitive to multiple sinusoidal waves to better integrate information

Question 3

what is mechanosensation

Answer 3

bristle in a fruit fly. each bristle has its own sensory neuron located in dorsal thorax.

Question 4

for mechanosensation: one ____________ will result in stimulus depolarization. Within the socket you can move the bristle around.

Answer 4

direction of movement

Question 5

There is a _________ for the bend of a bristle

Answer 5

threshold

Question 6

_________________ are covered in fine bristles to detected the flow of oncoming objects

Answer 6

sensory appendages

Question 7

these motor neurons are high selective in the direction of flight and ____________

Answer 7

even two different animals, the spatial code is relatively similar

Question 8

_____________ are specialized hair cell Celia that are sensitive to a bend in a specific direction

Answer 8

kinocellium

Question 9

what are the steps of kinocellium sensation

Answer 9

1. stimulus movement -> membrane voltage
2. changes in membrane voltage follow the sensory stimulus
3. tonic response as a result of changes in Vm

Question 10

Echolocation:
there is a gap for ultrasound sensory channel used in echolocation. this is called _______________. Multiple bands overlap

Answer 10

band width formation

Question 11

Parasite fly:

a fly is parasitized the cricket because it can hear the cricket tune because ______________ this called _____________

Answer 11

the ear of the fly is tuned to the cricket

signal receive coevolution

Question 12

a fungus takes over an ant in order to let it __________

Answer 12

reproduce

Question 13

Olfaction:

animals have antenna that house ____________. with yellow _________ to amplify sensation on the bristle

Answer 13

olfactory organs

mucus

Question 14

hair cells detect sensation via complex action potentials in order to produce ___________

Answer 14

sensation

*this allows for a complex response to pulses of odor

Question 15

carried out by 7 transmembrane proteins> GPCR. A second messenger.

Answer 15

2 order activate different signal cascades indicating high complexity

Question 16

each antenna has one receptor for each glomerulus. All receptors if a given type go to one _____________

Answer 16

glomerulus

Question 17

each receptor in the antenna Has a different ________________

Answer 17

ligand

Question 18

There is a calcium activation in sensory receptors of the antennal love

Answer 18

antenna, intact, puffs of orders

Question 19

attractiveness to a sent is determined by the number of

Answer 19

glomerulus activated

Question 20

too many glomeruli results in an

Answer 20

unpleasant odor

Question 21

__________ fish use backwards hair cells to send and measure current in the water.

Answer 21

electroreception

Question 22

platifi also use electroreception by

Answer 22

using their bill to detect electric current of prey.

Question 23

many species of fish use electric current to communicate with one another

Answer 23

receptor areas: modified hard cell, no cilia

generator: located in the tail of the fish. It is composed of a motor neuron and membrane

Question 24

the electric field is the strongest near the __________

Answer 24

electric organ