Marine stickleback populations live and breed strictly in the ocean. Sea-run stickleback fish are. anadromous, meaning that they are born in fresh water, spend most of their lives in the ocean, and. return to fresh water to breed. Freshwater stickleback fish live entirely in fresh water.
Among patients with Crohn's disease, 4% will have an anal fissure as the first manifestation of their Crohn's disease, and half of all patients with Crohn's disease eventually will develop an anal ulceration that may look like a fissure.
fissure of round ligament one on the visceral surface of the liver, lodging the round ligament in the adult. sylvian fissure (fissure of Sylvius) one extending laterally between the temporal and frontal lobes, and turning posteriorly between the temporal and parietal lobes. transverse fissure. 1. porta hepatis.2. the transverse cerebral fissure between the diencephalon and the cerebral hemispheres; called also fissure of Bichat. zygal fissure any of the fissures on the cerebral cortex that consist of two branches connected by a stem.issure of round ligament one on the visceral surface of the liver, lodging the round ligament in the adult. sylvian fissure (fissure of Sylvius) one extending laterally between the temporal and frontal lobes, and turning posteriorly between the temporal and parietal lobes. transverse fissure. 1. porta hepatis.