Pharynx Atlas Home
The pictures that comprise the Pharynx Atlas are a focal series through the terminal bulb of the
pharynx. The worm is lying on its right side, with anterior towards the upper left and posterior towards the lower right. Dorsal is the upper right and ventral is the lower left.
This is the first image and is a
superficial cut through the very leftmost edge of the pharynx.
Subsequent images go consecutively deeper, until the last goes through
the very rightmost edge. The focal planes are not equally spaced. They
were chosen so that all the nuclei in the terminal bulb would be
clearly visible in at least one image.
Click on individual pharyngeal cells to identify them.
Pharyngeal Terminal Bulb Muscle pm7VL
Description: The three pm7 muscle cells form most of the posterior half of the
terminal bulb. The cells are dorsal, left subventral, and right
subventral, and are separated from each other by the mc3 marginal
Pharynx Focal Plane 1
Identification: The pm7's are large fried eggs easily recognized by position and by
the line they form with pm6 and a neuron. pm7D is on the dorsal
midline, straight posterior from pm6D. pm7VL and pm7VR are
subventral, straight posterior of pm6VL and pm6VR.