ClipArt ETC
"A, heart of the pigeon, dorsal aspect. a. ao, arch of aorta; br. a, brachial artery; br. v, bachial vein; c. c, common carotid; ju, jugular; l. au, left auricle; l. p. a, left pulmonary artery; l. vn, left ventricle; pc. v, left pre-caval; ptc, post-caval; p. v, pulmonary veins; r. au, r. au', right auricle; r. p. a, right pulmonary artery; r. prc, right pre-caval; r.r vn, right ventricle." -Parker, 1900

Pigeon Heart

"A, heart of the pigeon, dorsal aspect. a. ao, arch of aorta; br. a, brachial artery; br. v, bachial…