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Fig.: Having deep sensibility. [R.] Bp. Reynolds. Visceral arches (Anat.), the bars or ridges between the visceral clefts. -- Visceral cavity or tube (Anat.), the ventral cavity of a vertebrate, which contains the alimentary canal, as distinguished from the dorsal, or cerebro-spinal, canal. -- Visceral clefts (Anat.)…

Around the viscera; as, the perivisceral cavity.

An air sac, sometimes double or variously lobed, in the visceral cavity of many fishes. It originates in the same way as the lungs of air-breathing vertebrates, and in the adult may retain a tubular connection with the pharynx or esophagus.

A perivisceral cavity which arises as an outgrowth or outgrowths from the digestive tract; distinguished from a schizocoele, which arises by a splitting of the mesoblast of the embryo.

A very large glandular and vascular organ in the visceral cavity of all vertebrates.

The principal mandibular bone; the mandible. Mandibular arch (Anat.), the most anterior visceral arch, -- that in which the mandible is developed.

A visceral mass, containing the stomach and other organs, in Tunicata and some mollusks.

The primitive perivisceral cavity.

Of or pertaining to the viscera; visceral.

The inner, or visceral, one of the two lamellæ into which the vertebrate blastoderm divides on either side of the notochord, and from which the walls of the enteric canal and the umbilical vesicle are developed. See Somatopleure. -- Splanch`no*pleu"ric, a.

An extensive division of gastropod Mollusca in which the loop or visceral nerves is twisted, and the sexes separate. It is nearly to equivalent to Prosobranchiata.

lways have a dorsal, or neural, cavity above the notochord or backbone, and a ventral, or visceral, cavity below it. The subdivisions or classes of Vertebrata are Mammalia, Aves, Reptilia, Amphibia, Pisces, Marsipobranchia, and Leptocardia.