(Innervation of the crotaline pit organ. The pit membrane (red) is innervated by three branches of the trigeminal nerve (yellow).
Abbreviations: C, cerebellum; E, eyeball (blue); IC, inferior colliculus; MO, medulla oblongata; N, nostril (green); OB, olfactory bulb; OT, optic
tectum; P, pit; SC, spinal cord; V, trigeminal ganglion)