visceral arch

visceral arch

n.

See branchial arch.

---

visceral

pertaining to a viscus.

---

visceral arch

mesenchymal structures in the region of the embryonic pharynx and visible on the ventrolateral aspect of the head; give rise to skeletal elements, larynx and other structures of the head.

visceral cleft

temporary depressions between the visceral arches of the embryo.

visceral efferent system

that part of the autonomic nervous system which provides motor innervation to the viscera.

visceral gout

see gout.

visceral granulomatosis

a disease of farmed and freeliving freshwater and marine fish caused by the fungus Ichthyophonus spp. There are granuloma-like lesions in all organs.

visceral larva migrans

see visceral larva migrans.

visceral lymphomatosis

see lymphoid leukosis.

visceral nervous system

see autonomic nervous system, visceral efferent system (above).

visceral pain

caused by inflammation of serous surfaces, distention of viscera and inflammation or compression of peripheral nerves. The pain caused by stretching of the wall of a hollow viscus is often intermittent because of its alternating relaxation and spasm in response to distention.

visceral patterning

the property in tissues of locating themselves in particular sites and with the appropriate three-dimensional shape.

visceral receptors

receptors in mucosae are sensitive to pH, slight touch, in ruminants there are sensors which recognize distention with or without gas.