Motor Endplate

Motor endplate is also known as terminal button.  This is the specialized synapse that an alpha-motorneuron makes to all the muscle fibers (i.e. a motorunit) it innervates.  Acetylcholine is secreted at the synapse that in turn depolarize the muscle fibers and leads to its contraction, in a mechanism known as Excitation-Contraction coupling.

untitled shoot-3261.jpg
Motorneuron and muscle fibers (TM: 400x, picture taken with a Zeiss F40/0.65 on Sony A7ii)
untitled shoot-3262.jpg
Motor Endplate (TM: 1000x, picture taken with a Zeiss Neofluar 100/1.3 Oil on Sony A7ii)
Ng_151031_microscope_3270.JPG
Another view of a motor endplate (TM: 1000x, picture taken with a Zeiss Neofluar 100/1.3 on Sony A7ii)
_DSC5086.JPG
Motor nerve fibers with endplates.  (TM: 400x, picture taken with a Zeiss Planapo 40/1.0 Oil on Sony A7ii)
_DSC5079.JPG
Another specimen of Motor endplate.  (TM: 400x, picture taken with a Zeiss Planapo 40/1.0 Oil on Sony A7ii)

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s