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 pm7VR

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 cells.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 cells. (See Pharynx section; Albertson and Thomson, 1975.)

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.