late 16 SNb, focal plane 1

In this image we are focused on 6/7, and the other muscles are out of focus. Note that the muscle morphology is less well-defined at this stage than at early 17 (the muscles are flatter and wider). This image presents a nice view of the relationships between the ISN and SN roots and the tn.

To late 16 SNb focal plane 2

To late 16 brightfield

Back to early 17 focal plane 3

To diagram of muscles.

To 2nd diagram (muscles and motor axons).

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(click on image to enlarge)