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). Back to table of contents

(click on image to enlarge)