Pertaining to tectum. Tegmentum of the brain stem. The term was used by Galen. Resembling a trapezium. The trapezoid body of the pons.
Trigeminal nerve has three divisions.
It was described by Fallopius and again by Meckel in 1748. The name trigerninal was given by Winslow on account of its three divisions. Trochlear nerve supplies the superior extraocular oblique muscle, whose tendon passes through a fibrous ring, the trochlea. Relating to trochlea. Anterior medullary velum.