You need to login first

Login information

Haven't yet registered?

×

Categories

Homework Help Boards (University / College Level)

Biology-Related

Science-Related

Others

Laboratory Help


Non-Homework Help Boards

Notes

Guidance

Discussion

×
* * * *
top posters

Support Us

If you found our community helpful, your small donation will help us reach more students around the globe. You may also like us on Facebook or follow us on Twitter.
Pages: 1     Go Down
  New Topic  |  more  
ppk
wrote...
*
*
Posts: 3567
Credits: 4973
Rep:  +46  -2 
     
3 years ago
What is the trigger zone? Where is the trigger zone found in efferent, afferent, and interneurons? Do the terms trigger zone and axon hillock have the same meaning? Explain.
  • Read 5636 times
  • 2 Replies
wrote...
Posts: 55
Credits: 585
Rep:  +1 
     
3 years ago
per the text, in the efferent neurons and interneurons, the trigger zone is the axon hillock. 
 
I hope this helps.
wrote...
*
*
Posts: 989
Credits: 3383
Rep:  +91 
     
3 years ago
The trigger zone is an area of the neuron that contains a high membrane concentration of voltage-gated Na+ channels and is near an area that lacks these. In order for action potentials to occur, graded potentials reaching the trigger zone must depolarize the membrane to the threshold voltage. In efferent and interneurons, the trigger zone is the axon hillock (also called the initial segment). In afferent neurons, the trigger zone is located where the dendrites join the axon (immediately adjacent to the receptor), rather than at the axon hillock. The axon hillock is an anatomical region, whereas the trigger zone is defined by its function rather than its location.
Pages: 1     Go Up New Topic more
Related Topics
Note: This topic is currently locked from adding new posts. Only administrators and moderators can reply. If you'd like to contribute to this topic, start a new thread and make reference to this one. Otherwise, contact a moderator for more options.

Ask a Question

ask
Click to ask a question. 341 Students and 20 members are standing by to answer all your science and biology homework problems, free. So far today, 98 guests have joined.
Related Images
Views
298
Rating

Views
373
Rating

Views
316
Rating