Trochlear-nerve
noun, Anatomy.
1.
either one of the fourth pair of cranial nerves, consisting of motor fibers that innervate the superior oblique muscle of the upper part of the eyeball.
trochlear nerve
/ˈtrɒklɪə/
noun
1.
either one of the fourth pair of cranial nerves, which supply the superior oblique muscle of the eye
trochlear nerve n.
A nerve that originates in the mesencephalon below the cerebral aqueduct and supplies the superior oblique muscle of the eyeball. Also called fourth cranial nerve.
Read Also:
- Trochlear spine
trochlear spine n. A spicule of bone arising from the edge of the trochlear pit of the eye, giving attachment to the pulley of the superior oblique muscle of the eyeball.
- Trochoid
noun 1. Geometry. a curve traced by a point on a radius or an extension of the radius of a circle that rolls, without slipping, on a curve, another circle, or a straight line. Equation: x = aθ − b sin θ, y = a − b cos θ. adjective 2. rotating on an axis, […]
- Trochoid joint
trochoid joint n. A joint in which a section of a cylinder of one bone fits into a corresponding cavity on the other, as in the proximal articulation between the radius and ulna. Also called pivot joint, rotary joint.
- Trochophore
noun, Zoology. 1. a ciliate, free-swimming larva common to several groups of invertebrates, as many mollusks and rotifers. noun 1. the ciliated planktonic larva of many invertebrates, including polychaete worms, molluscs, and rotifers
- Trod
verb 1. a simple past tense and past participle of tread. verb (used without object), trod, trodden or trod, treading. 1. to set down the foot or feet in walking; step; walk. 2. to step, walk, or trample so as to press, crush, or injure something (usually followed by on or upon): to tread on […]