Effects of lorazepam on the distribution of spatial attention |
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Authors: | RB Post MR Chaderjian RJ Maddock LA Lott |
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Affiliation: | Niigata College of Nursing, Joetsu, Japan. |
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Abstract: | A left persistent primitive sciatic artery was observed in a Japanese male cadaver. The sciatic artery arose from the internal iliac artery and perforated the ventral division of the sacral plexus. The sciatic artery did not anastomose with the perforating arteries nor the popliteal artery. The left femoral artery was incompletely developed, attenuating and terminating as the saphenous artery. Instead of the femoral artery, direct continuation of the profunda femoris artery, which probably corresponded to the fourth perforating artery, became the popliteal artery. Other vessel anomalies were observed in various regions. They included; (1) the retroesophageal right subclavian artery; (2) the left vertebral artery entering the transverse foramen of the 4th cervical vertebra; (3) bilateral occurrence of the superficial brachial artery; (4) the left gastric artery independently arising from the abdominal aorta; (5) a hepatolienomesenteric trunk; (6) three accessory renal arteries; (7) double testicular arteries; (8) the arteria intermesenterica; (9) a venous ring termed the 'renal collar', and (10) paired thoracic ducts. The present cadaver was considered to be a very rare case in which many primitive vascular systems had extensively persisted in various parts of the body. |
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