ClipArt ETC
"Snake's head. dv., Poison fangs; b., sheath of fang; l., tongue; rl., muscles of tongue." -Thomson, 1916

Snake Head

"Snake's head. dv., Poison fangs; b., sheath of fang; l., tongue; rl., muscles of tongue." -Thomson,…

"Poison apparatus of rattlesnake. A, eye; Gc, poison-duct entering the poison-fang at +; Km, muscles of mastication partly cut through at *; Mc, masseter or constrictor muscle; Mc', continuation of the constrictor muscle to the lower jaw; N, nasal opening; S, fibrous poison-sac; z, tongue; za, opening of the poison-duct; zf, pouch of mucous membrane enclosing the poison-fangs." -Parker, 1900

Rattlesnake Poison Apparatus

"Poison apparatus of rattlesnake. A, eye; Gc, poison-duct entering the poison-fang at +; Km, muscles…