| TALH | thick ascending limb of Henle's loop |
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| THE | tetrahydrocortisone E; tonic hind limb extension; transhepatic embolization; tropical hypereosinophi... |
| TTLD | terminal transverse limb defect |
| UL | ultrasonic; Underwriters Laboratories; undifferentiated lymphoma; upper limb; upper limit; upper lob... |
| VACTERL | vertebral abnormalities, anal atresia, cardiac abnormalities, tracheoesophageal fistula and/or esoph... |
| loops of spinal nerves | Loops of the spinal nerves, connecting ventral primary rami of the spinal nerves. Synonym: ansae nervorum spinalium. (05 Mar 2000) |
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| lumbar nerves | Five bilaterally-paired nerves emerging from the lumbar portion of the spinal cord; the first four nerves enter into the formation of the lumbar plexus, the fourth and fifth into that of the sacral plexus. Synonym: nervi lumbales. (05 Mar 2000) |
| lumbar splanchnic nerves | Branches from the lumbar sympathetic trunks that pass anteriorly to convey presynaptic sympathetic fibres to, and visceral afferents from, the coeliac, intermesenteric, aortic, and superior hypogastric plexuses. Synonym: nervi splanchnici lumbales. (05 Mar 2000) |