hanical gated channel Can be opened because a physical linker protein that causes a physical "pull" force the creates a conformational change Have been observed within the eye and are the initial start of visual detection Are on the cells that create/grow hair on hurmans d. A&C only

Caffeine is an inhibitor of the enzyme phosphodiesterase.   Predict what caffeine will do to my heart rate -- Support with the correct physiological mechanism And you may ask yourself "Well....how did I get to membrane potentials?" If caffeine were applied to the retina, what would happen.  Include the mechanism we covered on how you detect light

The lens tends to harden with age. This would make it difficult to focus on nearby objects make it harder for light to reach the photoreceptor cells increase the pressure on the retina causing blindness

Melanopsin, the opsin in ipRGCs, is most sensitive to blue light- the wavelength of light that is emitted by the screens of most electronic devices. Explain how using these screens at night may disrupt your ability to go to sleep.

The membrane potential of cells within the visual system is recorded in the dark, then following a brief flash of light. During the flash of light you would expect __________ cells to _____________       a   rod cell; hyperpolarize  b   bipolar cell; depolarize  c   ganglion cell; depolarize  d   all of the above are correct

3) What are the three different types of Noises associated with biomedical signals? What are the various ways by which noise in measurement can be reduced? ot A 2s 20 6 me1oeT prilgme3 JeupyM.ncieavno latipid ol ptipia of

which of the following is NOT a step in rod phototransduction by rhodopsin? activation of rhodopsin by photons conversion of cGMP to GMP by phosphodiesterase opening of cGMP-dependent ion channels and hyperpolarization of the membrane activation of phosphodiesterase by light-activated rhodopsin through Galphat, (couldn't add the alpha into that part    i didn't select an answer resulting in getting it wrong and wish to know what the correct answer is and how it is the correct answer

When moved from darkness to light, the potential generated in photoreceptors is a ___1.choose your answer___. Specifically, this potential change is brought on in part by the PDE break down of ___2.choose your answer___ to ____3.choose your answer___, which then causes the ___4.choose your answer___ of __5.choose your answer__ channels. 1.Hyper polarization or repolarization or depolarization 2.GMP or cGMP 3.cGMP or GMP 4.opening or closure 5.sodium or calcium or potassium