Crowdly

Add to Chrome

Universities
learning.monash.edu
PHY2011 - Neuroscience of communication, sensory and control systems - S1 2025

PHY2011 - Neuroscience of communication, sensory and control systems - S1 2025

Looking for PHY2011 - Neuroscience of communication, sensory and control systems - S1 2025 test answers and solutions? Browse our comprehensive collection of verified answers for PHY2011 - Neuroscience of communication, sensory and control systems - S1 2025 at learning.monash.edu.

Get instant access to accurate answers and detailed explanations for your course questions. Our community-driven platform helps students succeed!

The role of the protein PDE in vision is:

to break down cyclic GMP (cGMP).

to keep open ion channels in the red outer segment.

to produce cyclic GMP (c-GMP).

to absorb light energy.

to activate Transducin (G-protein).

View this question

The refractive error of astigmatism

Results in the formation of a blur circle around a highly focused centre on the retina

Is the differential focusing of horizontal and vertical light rays from the same object on to different retinal points

Arises because of an increase in the length of the eyeball

Arises because of an decrease in the length of the eyeball

Arises because of a mis-match between the refractive indices of the cornea and the lens

View this question

The point at which the optic nerve leaves the retina is called

parafovea

sclera

choroid

the fovea

optic disk

View this question

Rod cells are depolarised in the dark. Why?

low levels of cyclic GMP result in sodium channel closure

high levels of cyclic GMP result in sodium channel closure

low levels of cyclic GMP hold the sodium channels open

high levels of cyclic GMP hold the sodium channels open

View this question

What is the unit in which the lens' power is measured?

centimetres

millimetres

radioptres

metres

dioptres

View this question

Four of the five answers listed below are parts of the same sense organ. Select the exception.

iris

ampulla

retina

choroid

vitreous humor

View this question

The outer transparent protective cover of the eyeball is the

fovea

sclera

retina

cornea

choroid

View this question

Which of the following statements about light adaptation is INCORRECT?

Light adaptation is possible because the production of cGMP is controlled by Ca²⁺.

Light adaptation is possible because Ca²⁺ entry is blocked but it is still pumped out of the cell.

Light adaptation is possible because Ca²⁺ is converted into more cGMP.

During light adaptation the membrane potential in cones gradually returns to resting levels.

Light adaptation is possible because photoreceptors can replace some of the cGMP broken down.

View this question

The adjustable ring of contractile and connective tissues that controls the amount of light entering the eye is the

pupil

iris

lens

retina

cornea

View this question

The role of cGMP in photoreceptors is

To control the action of guanylate cyclase for light adaptation

To trigger the activation of the G protein sequence in phototransduction

To amplify the standing current flow in rods

To keep open the ion channels that allow influx of Na⁺ and Ca⁺⁺

To keep open the ion channels that allow influx of Na⁺ and efflux of K⁺

View this question

Previous
1
81
82
83
162
Next

Want instant access to all verified answers on learning.monash.edu?

Get Unlimited Answers To Exam Questions - Install Crowdly Extension Now!

Add to Chrome

Telegram Instagram TikTok Question Bank

Terms of Use Contact Us

Add to Chrome

Add to Chrome