Lenz's law says the induced current is in a direction to opposite the change in field, not necessarily the field itself. If the field created by the outer loop is getting stronger, the induced current will be in the opposite direction as the current in the outer loop.
through the trochlea by means of a sliding action with the central fibers undergoing the maximum excursion. [Key words: Superior oblique, trochlea.] Ophthalmology 89: 124-133, 1982 The trochlea is a complex structure attached to the bony orbit at the trochlear fossa (or trochlear spine) located near the junction of the superior and medial orbital rim.1 The function of the trochlea is to redirect the superior oblique tendon so that it pulls in an anterior direction along a line approximately 55Â° nasal to the saggital plane. 2 The trochlea is not readily acÂ­ cessible from the usual transconjunctival approach to the extraocular muscles. This is because the trochlea
Trochlear nerve. From Wikipedia, the free encyclopedia. The trochlear nerve, also called the fourth cranial nerve or cranial nerve IV, is a motor nerve (a somatic efferent nerve) that innervates only a single muscle: the superior oblique muscle of the eye, which operates through the pulley-like trochlea.he trochlear nerve is unique among the cranial nerves in several respects: 1  It is the smallest nerve in terms of the number of axons it contains. 2  It has the greatest intracranial length.