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 seventh image in the series. Earlier images start at the leftmost edge of the pharynx and 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 pm6D

Description: The three pm6 muscle cells form most of the anterior half of the terminal bulb. The cells are dorsal, left subventral, and right subventral, and are separated from each other by the mc3 marginal cells. (See Pharynx section; Albertson and Thomson, 1975.)

Pharynx Focal Plane 7

Identification: The pm6's are large fried eggs easily recognized by position and by the line they form with pm7 and a neuron. pm6D is on the dorsal midline, straight anterior from pm7D and just posterior to I4. pm6VL and pm6VR are subventral, straight anterior of pm7VL and pm7VR, and just posterior to the very small M2 neurons.

pm6D pm5DR pm5R M2R pm6VR pm7VR g1AR