ganglia's Usage Examples:

The nervous system is embedded in the epidermis, and the pairs of ganglia are separated as in Serpula, 'c. each pair has a longish commissure between its two ganglia.

In the latter, the segmentally arranged ganglia are more sharply marked off from the connectives than in other Chaetopods, where nerve cells exist along the whole ventral chain, though more numerous in segmentally disposed swellings.

The cerebral ganglia constitute an archicerebrum for the most part, there being no evidence that, as in the Arthropoda, a movement forward of post-oral ganglia has taken place.

In all Chaetopods this system consists of cerebral ganglia connected by a circumoesophageal commissure with a ventral ganglionated cord.

n', Nerve uniting cerebral ganglia with small ganglia on head.

g 2, Cerebral ganglia.

The nervous system is remarkably concentrated in some beetles, the abdominal ganglia showing a tendency to become shifted forward and crowded together, and in certain chafers all the thoracic and abdominal ganglia are fused into a single nervecentre situated in the thorax, - a degree of specialization only matched in the insectan class among the Hemiptera and some muscid flies.

In the region of the neck lateral strands pass through the transverse canal of the cervical vertebrae; but from the thoracic region onwards, where the cardiac branch to the heart is given off, each strand is double and the basal ganglia are successively connected with the next by a branch which runs ventrally over the capitulum of the rib, and by another which passes directly through the foramen or space formed between capitulum and tuberculum.

- Nervous system of Patella; the visceral loop is lightly shaded; the buccal ganglia are omitted.

The eyes are indicated as black dots behind the cerebral ganglia.

Synonyms:

neural structure, systema nervosum, autonomic ganglion, basal ganglion, nervous system,