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11 votes
Accepted

Can acetylcholine leak away from the synapse and cause spasms?

The enzyme responsible for the breakdown of acetylcholine (Ach), i.e., acetylcholinesterase, rapidly degrades, and inactivates Ach in the synaptic cleft after release. This process is particularly ...
AliceD's user avatar
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4 votes
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What are these two nerves running parallel to the spine called?

From this closeup image, you can see there is more than one nerve on each side that is parallel to the spine. Source: imgur.com First, they are the right and left sympathetic trunk that run from the ...
Jan's user avatar
  • 8,089
3 votes

What is the location of the Hypoglossal nerve?

The following image of a cadaver shows the hypoglossal highlighted: Source: StudyBlue You can see the flap of skin/muscle that has been removed to get an understanding of the thickness of tissues ...
theforestecologist's user avatar
2 votes
Accepted

Im struggling to see how these are presynaptic terminals/knobs and not post synaptic

The fibers in green are axons and axon terminals from other neurons, not the one colored orange. Yes, there would be post-synaptic structures associated with these but those are not drawn in this ...
Bryan Krause's user avatar
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2 votes

Is the cranial nerve blood supply encapsulated by the blood brain barrier?

I can't find a great answer to this either, but there is a known concept of a CNS-PNS transition zone, specifically as it pertains to myelination of cranial nerves. With the exception of CN 1 & 2 (...
Joe's user avatar
  • 21
2 votes

Do nerves work as I think they work and what does that mean for our senses?

I'll attempt an answer, but please know you don't have a clear nor defining question to address. This is more suited for conversation or open discussion, and I recommend starting a chat on the topic. ...
S Pr's user avatar
  • 6,262
2 votes

Are parasympathetic nerves different from motor and sensory nerves?

There are many ways to divide and sort peripheral and spinal cord nerves and axons. One division is into "autonomic" (further divided into sympathetic and parasympathetic) and "somatic&...
Bryan Krause's user avatar
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1 vote
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What does it mean to say that the sympathetic nervous system is organized for diffuse activity?

"Mobilize" in this context means to: to release (something stored in the organism) for bodily use Merriam-Webster "Diffuse" means "spread out": it doesn't say anything about whether the effect is ...
Bryan Krause's user avatar
  • 46.1k
1 vote

Im struggling to see how these are presynaptic terminals/knobs and not post synaptic

The green ones you see are the synaptic knobs or presynaptic terminals of other neurons of which some lie on the surface of dendrite of the given neuron(Axodendritic) and some on the soma of the ...
Roy's user avatar
  • 11
1 vote

Can acetylcholine leak away from the synapse and cause spasms?

"So no, Ach does not leak away under physiologiocal conditions " I beg to differ. During times of psychological stress, after a physical injury or infection, these can interfere with ...
Johnathan Abrams's user avatar
1 vote

Cranial Nerve Decussation

Classically, only the CN.IV "decussates" (at the superior medullary velum) but some cranial nerve nuclei are on the contralateral side, so a lesion to the upper moto neurone or to cranial nerve ...
Adeboye Grillo's user avatar

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