The noun A. TESTUDINEUS has 1 sense: 1. a small perch of India whose gills are modified to allow it to breathe air; has spiny pectoral fins that enable it to travel on land. Familiarity information: A. TESTUDINEUS used as a noun is very rare. Dictionary entry details.
If the urine appears thick or has granules in it I'd suspect bladder stones/crystals or infection. The bright yellow color can sometimes indicate a liver or gallbladder problem.
Cortical thick ascending limb; The cortical thick ascending limb drains urine into the distal convoluted tubule. The tissue type of the loop is simple squamous epithelium. The thick and thin terminology does not refer to the size of the lumen, but to the size of the epithelial cells. The loop is also sometimes called the Nephron loop. Blood supply