Since you asked....

[HoangDDS]

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since I am a neuroscience BS,

If an inhibitor of acetylcholineserase is added to a neuromusclar junction, then the postsynaptic membrane will
a) be depolarized by action potentials more frequently
b) be depolarized longer with each action potential
c) be resistant to depolarizatoin
d) spontaeously depol.

Which of the following best explains unidirectional signaling at synapes b/w neurons?
a)neurotransmitter (NT) is always degraded by the post synaptic cell
b) only the postsyanptic cell has NT receptor
c) axon can propagate action potential in only one direction
d) only the postsynaptic cell has a resting membrane potential

How can a presynaptic neuron increase the intensity of the signal it transmit?
a) increase the size of presynaptic action potentials
b) increase the frequency of action potentials
c) change the type of neuotransmitter it releases
d) change teh speed of action potential propagation

Real story: The other day I was trying to rollerblade and I thought brakes are for wuss, so I took em off --also b/c they look cooler this way. And somehow I ended up on a really steep downhill--gravity set's in--I went faster and faster and I didn't know how to stop. So...I fell smacked on my ass. Which receptor is responsible for the aching pain I'm feeling on my right butt cheek?
a) Mechanoreceptors
b) Themoreceptors
c) Nociceptors
d) chemoreceptors

It hurted so bad that my girlfriend had to rub IcyHot on my ass--literally.
The receptor that recognized the icyhot feeling on my ass is _____, and the receptor that recognized that minty smell is______, which somehow lead to this stingy feeling in my eyes. The eyes have these receptors _______.
a) chemoreceptors; machanoreceptors, electromagnetic receptors
b) themoreceptors, chemoreceptors, mechanoreceptors
c) mechanoreceptors, nocireptors, thermorecetpors
d) thermoreceptors, chemorecetpors, electromagnetic receptors

last one for the night

If a sensory neuron (cochlear nerve) leading from the ear to the brain fires an action potential more rapidly, how will the brain perceive this change?
a) high pitch
b) increase in the volume of sound
c) the object is close by
d) time to dance

GOOD LUCK TOMORROW OSIMSDDS!!

 

[PooyaH]

since I am a neuroscience BS,

If an inhibitor of acetylcholineserase is added to a neuromusclar junction, then the postsynaptic membrane will
a) be depolarized by action potentials more frequently
b) be depolarized longer with each action potential
c) be resistant to depolarizatoin
d) spontaeously depol.

Which of the following best explains unidirectional signaling at synapes b/w neurons?
a)neurotransmitter (NT) is always degraded by the post synaptic cell
b) only the postsyanptic cell has NT receptor
c) axon can propagate action potential in only one direction
d) only the postsynaptic cell has a resting membrane potential

How can a presynaptic neuron increase the intensity of the signal it transmit?
a) increase the size of presynaptic action potentials
b) increase the frequency of action potentials
c) change the type of neuotransmitter it releases
d) change teh speed of action potential propagation

Real story: The other day I was trying to rollerblade and I thought brakes are for wuss, so I took em off --also b/c they look cooler this way. And somehow I ended up on a really steep downhill--gravity set's in--I went faster and faster and I didn't know how to stop. So...I fell smacked on my ass. Which receptor is responsible for the ache I'm feeling on my right butt cheek?
a) Mechanoreceptors
b) Themoreceptors
c) Nociceptors
d) chemoreceptors

It hurted so bad that my girlfriend had to rub IcyHot on my ass--literally.
The receptor that recognized the icyhot feeling on my ass is _____, and the receptor that recognized that minty smell is______, which somehow lead to this stingy feeling eyes. The eyes have these receptors _______.
a) chemoreceptors; machanoreceptors, electromagnetic receptors
b) themoreceptors, chemoreceptors, mechanoreceptors
c) mechanoreceptors, nocireptors, thermorecetpors
d) thermoreceptors, chemorecetpors, electromagnetic receptors

last one for the night

If a sensory neuron (cochlear nerve) leading from the ear to the brain fires an action potential more rapidly, how will the brain perceive this change?
a) high pitch
b) increase in the volume of sound
c) the object is close by
d) time to dance

GOOD LUCK TOMORROW OSIMSDDS!!

I haven't gone over Bio yet...hopefully I'm not way off! lol

 

[Mstoothlady2012]

since I am a neuroscience BS,

If an inhibitor of acetylcholineserase is added to a neuromusclar junction, then the postsynaptic membrane will
a) be depolarized by action potentials more frequently
b) be depolarized longer with each action potential
c) be resistant to depolarizatoin
d) spontaeously depol.

Which of the following best explains unidirectional signaling at synapes b/w neurons?
a)neurotransmitter (NT) is always degraded by the post synaptic cell
b) only the postsyanptic cell has NT receptor
c) axon can propagate action potential in only one direction
d) only the postsynaptic cell has a resting membrane potential

How can a presynaptic neuron increase the intensity of the signal it transmit?
a) increase the size of presynaptic action potentials
b) increase the frequency of action potentials
c) change the type of neuotransmitter it releases
d) change teh speed of action potential propagation

Real story: The other day I was trying to rollerblade and I thought brakes are for wuss, so I took em off --also b/c they look cooler this way. And somehow I ended up on a really steep downhill--gravity set's in--I went faster and faster and I didn't know how to stop. So...I fell smacked on my ass. Which receptor is responsible for the aching pain I'm feeling on my right butt cheek?
a) Mechanoreceptors
b) Themoreceptors
c) Nociceptors
d) chemoreceptors

It hurted so bad that my girlfriend had to rub IcyHot on my ass--literally.
The receptor that recognized the icyhot feeling on my ass is _____, and the receptor that recognized that minty smell is______, which somehow lead to this stingy feeling eyes. The eyes have these receptors _______.
a) chemoreceptors; machanoreceptors, electromagnetic receptors
b) themoreceptors, chemoreceptors, mechanoreceptors
c) mechanoreceptors, nocireptors, thermorecetpors
d) thermoreceptors, chemorecetpors, electromagnetic receptors

last one for the night

If a sensory neuron (cochlear nerve) leading from the ear to the brain fires an action potential more rapidly, how will the brain perceive this change?
a) high pitch
b) increase in the volume of sound
c) the object is close by
d) time to dance

GOOD LUCK TOMORROW OSIMSDDS!!

Man these are hard.....havn't learned this much neurobio I think I flunked this one 😱

 

[harrygt]

since I am a neuroscience BS,

If an inhibitor of acetylcholineserase is added to a neuromusclar junction, then the postsynaptic membrane will
a) be depolarized by action potentials more frequently
b) be depolarized longer with each action potential
c) be resistant to depolarizatoin
d) spontaeously depol.

Which of the following best explains unidirectional signaling at synapes b/w neurons?
a)neurotransmitter (NT) is always degraded by the post synaptic cell
b) only the postsyanptic cell has NT receptor
c) axon can propagate action potential in only one direction
d) only the postsynaptic cell has a resting membrane potential

How can a presynaptic neuron increase the intensity of the signal it transmit?
a) increase the size of presynaptic action potentials
b) increase the frequency of action potentials
c) change the type of neuotransmitter it releases
d) change teh speed of action potential propagation

Real story: The other day I was trying to rollerblade and I thought brakes are for wuss, so I took em off --also b/c they look cooler this way. And somehow I ended up on a really steep downhill--gravity set's in--I went faster and faster and I didn't know how to stop. So...I fell smacked on my ass. Which receptor is responsible for the aching pain I'm feeling on my right butt cheek?
a) Mechanoreceptors
b) Themoreceptors
c) Nociceptors
d) chemoreceptors

It hurted so bad that my girlfriend had to rub IcyHot on my ass--literally.
The receptor that recognized the icyhot feeling on my ass is _____, and the receptor that recognized that minty smell is______, which somehow lead to this stingy feeling in my eyes. The eyes have these receptors _______.
a) chemoreceptors; machanoreceptors, electromagnetic receptors
b) themoreceptors, chemoreceptors, mechanoreceptors
c) mechanoreceptors, nocireptors, thermorecetpors
d) thermoreceptors, chemorecetpors, electromagnetic receptors

last one for the night

If a sensory neuron (cochlear nerve) leading from the ear to the brain fires an action potential more rapidly, how will the brain perceive this change?
a) high pitch
b) increase in the volume of sound
c) the object is close by
d) time to dance

GOOD LUCK TOMORROW OSIMSDDS!!

The last one was so specific.

 

[PooyaH]

For the first one, here's what I thought and remember, since acetylcholineserase inhibotor is present, then it wouldn't be able to degrade the acetylcholine neurotransmitters, so wouldn't it be constantly depolarized? Or I suppose it will be depolarized more than normally it would and it finally becomes polarized!?

 

[HoangDDS]

since I am a neuroscience BS,

If an inhibitor of acetylcholineserase is added to a neuromusclar junction, then the postsynaptic membrane will
a) be depolarized by action potentials more frequently
b) be depolarized longer with each action potential
c) be resistant to depolarizatoin
d) spontaeously depol.
If AChE is inhibited, ACh will remain in the cleft longer so the sodium channels will remain open longer with each action potentials that reach the synapes. If the receptors are open longer, the depolarization will last longer

Which of the following best explains unidirectional signaling at synapes b/w neurons?
a)neurotransmitter (NT) is always degraded by the post synaptic cell
b) only the postsyanptic cell has NT receptor
c) axon can propagate action potential in only one direction
d) only the postsynaptic cell has a resting membrane potential
I know C is appealing that is why I put it on there. There's been other posts recently about this too. Even tho the axon transmit AP, ion flow is majority in one direction but also leaks in other directions as well. A is irrelevant. B - signaling is unidirectional b/c only the presynaptic cell has vesicles of NT that are released in response to AP, and only the postynaptic neuron has receptors that bind NT

How can a presynaptic neuron increase the intensity of the signal it transmit?
a) increase the size of presynaptic action potentials
b) increase the frequency of action potentials
c) change the type of neuotransmitter it releases
d) change teh speed of action potential propagation
Not A b/c AP are all or none once they started. The magnitude of depolarization does not change. An increase in the number of action potentials it transmit (temporal summation) will increase intensity of the response

Real story: The other day I was trying to rollerblade and I thought brakes are for wuss, so I took em off --also b/c they look cooler this way. And somehow I ended up on a really steep downhill--gravity set's in--I went faster and faster and I didn't know how to stop. So...I fell smacked on my ass. Which receptor is responsible for the aching pain I'm feeling on my right butt cheek?
a) Mechanoreceptors respond to mechanical distrubance (i.e. pacinian corpuscles - pressure)
b) Themoreceptors it is what is
c) Nociceptors pain receptors
d) chemoreceptors respond to particular chemical (ie olfactory receptors detect airborne chemicals--allow for scent

It hurted so bad that my girlfriend had to rub IcyHot on my ass--literally.
The receptor that recognized the icyhot feeling on my ass is _____, and the receptor that recognized that minty smell is______, which somehow lead to this stingy feeling in my eyes. The eyes have these receptors _______.
a) chemoreceptors; machanoreceptors, electromagnetic receptors
b) themoreceptors, chemoreceptors, mechanoreceptors
c) mechanoreceptors, nocireptors, thermorecetpors
d) thermoreceptors, chemorecetpors, electromagnetic receptors
electromagnetic recetpors stimulated by electormagnetic waves (ie rods and cones respond to light --photoreceptors )

last one for the night

If a sensory neuron (cochlear nerve) leading from the ear to the brain fires an action potential more rapidly, how will the brain perceive this change?
a) high pitch
b) increase in the volume of sound
c) the object is close by
d) time to dance
tricky-- An increase in sound wave = a higher pitch, but neurologically, if the pitch is changed, a different set of neurons would fire action potential. More rapid firing of a cochlear nerve indicates an increase in volume of sound.
GOOD LUCK TOMORROW OSIMSDDS!!

oops, did I make this too hard? Didn't mean to make it so hard, just tried to be tricky. I can explain more on any of these if you have questions.

Pooyah- thanks for being the first brave soul to answer. And you're right with what you said about the 1st question, but it wouldn't increase the frequency of AP as much as depolorization will last longer. Actually now that I think about it I think I poorly worded #1. I think it could be A or B since, AP is all or none, the depolraization wouldn't necessary last longer, due to the refractory period. Unless its causing an EPSP, a long EPSP. so that would make that true. SORRY SCRATCH #1 .

 

[PooyaH]

oops, did I make this too hard? Didn't mean to make it so hard, just tried to be tricky. I can explain more on any of these if you have questions.

Pooyah- thanks for being the first brave soul to answer. And you're right with what you said about the 1st question, but it wouldn't increase the frequency of AP as much as depolorization will last longer. Actually now that I think about it I think I poorly worded #1. I think it could be A or B since, AP is all or none, the depolraization wouldn't necessary last longer, due to the refractory period. Unless its causing an EPSP, a long EPSP. so that would make that true. SORRY SCRATCH #1 .

I guess that's not bad for not having studied for Bio yet 😀

 

[PooyaH]

HoangDDS, where did you get these questions from?

 

[Andrew324]

Great Questions, thanks for posting them