Tissue

Association of cells with a common embryological origin or pathway and similar structure and function. Usually, cells of a tissue are contiguous at cell membranes and may be of one or more types. Tissues aggregate to form organs.

PHC

Neuron class of two neurons with cell bodies situated in the lumbar ganglia. Posteriorly directed processes run from the cell bodies into the tails pike running alongside the processes of PLM and PLN. The disposition of these processes suggests that they may be sensory dendrites.

neuronal sheath cell

a structural (glial) cell which forms an specialized environment surrounding the sensory ending(s) of one or more neurons; sometimes accompanied by a more distal socket cell. In early development of the sensory nerves and of the nerve ring some sheath cells (cephalics and labials) may also provide a substrate for axon guidance

XXX cell

Two embryonic hypodermal cells (XXXL, XXXR) that may provide a scaffold for the early organization of ventral bodywall muscles and the various socket cells in the lateral and ventral lips. Their cell bodies soon crawl posteriorly, and their processes separate the amphid nerve from the mechanosensory nerves in the late embryo. The XXX processes later retract, and the XXX cell bodies remain in the ventrolateral bodywall near the cell bodies of the posterior arcade and some socket cells where they perform a neurohumoral function, as they retain short processes bordering the pseudocoelom and contain some secretory vesicles.