The elasmobranch fishes (1934) The elasmobranch fishes elasmobranchfish03dani Year: 1934 Fig. 188. Sinus venosus opened, Heptanchus maculattis. (Euth Jeanette Powell, del.) , anterior cardinal; au., auricle; , hepatic vein; , inferior jugular vein; , postcardinal sinus; sa., sinu-auricular valve; , subclavian vein; , sinus venosus; v., valves of anterior cardinal sinus. deep vein () passes to the right of the spinal column to join the caudal vein (). The anterior part of the dorsal cutaneous vein ends anteriorly in a V-shaped sinus over the brain case. The l
The elasmobranch fishes (1934) The elasmobranch fishes elasmobranchfish03dani Year: 1934 Fig. 188. Sinus venosus opened, Heptanchus maculattis. (Euth Jeanette Powell, del.) , anterior cardinal; au., auricle; , hepatic vein; , inferior jugular vein; , postcardinal sinus; sa., sinu-auricular valve; , subclavian vein; , sinus venosus; v., valves of anterior cardinal sinus. deep vein () passes to the right of the spinal column to join the caudal vein (). The anterior part of the dorsal cutaneous vein ends anteriorly in a V-shaped sinus over the brain case. The lateral cutaneous vein (Lev., fig. 189) runs directly under the skin, parallel with and ventral to the lateral line groove. It extends from the middle region of the caudal fin forward, and joins the subscapular sinus near its tip (fig. 187). In its course forward it receives numerous segmentally arranged cutaneous branches, and in the region of the dorsal fin it has strong intercom- municating branches which join the cloacal vein () of the lateral ab- dominal system. Fig. 189. Cutaneous veins, Heptanchus macidatus. (Helen Hopkins, orig.) , caudal vein; , cloacal vein; , lateral cutaneous vein; 77!.^;., median unpaired vein; , posterior dorsal cutaneous vein; , posterior ventral cutaneous; , sub- scapular vein. The ventral cutaneous vein lies in the subcutaneous tissue in the midventral line. In the region of the anal fin it forms a loop and like a V its right and left branches run backward on the caudal fin. The posterior part of the vessel empties into the cloacal vein (cLv.) and the anterior segment of this vein joins the coracoid vein (, fig. 187).
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