Fig. 1. Anatomy and ultrasonography of broad nosed caiman. (A) Chequerboard pattern of ventral scales and marks for application of the ultrasound scanner head (B) Partial situs of the body cavity. Black bars in A and B indicate scanner head position resulting in the images in C, D and E; (C) duodenum and liver (D). (C–E) Ultrasound anatomy of the duodenum (C), distal small intestine (D), and liver and gall bladder (E). Ultrasound anatomy of the liver and gall bladder. Abbreviations: ab, adipose tissue body; dd, duodenum; gb, gall bladder; L, liver; m, ventral muscles; si, distal small intestine; sto, stomach. The scanner head was positioned on the ventral scales of the caiman, thus in the ultrasonographs (C–E) ventral is at the top and dorsal is at the bottom. Green lines in C–E indicate the morphometric measurements. Scale bars, 1 cm (C–E).