Muscle of the Eye
Side view of the muscles of the eye in their natural positions. Labels: a,b,c,d, the four straight muscles. a. is turned up to prevent the others from being hidden. e. the superior oblique muscle. f. the optic nerve. The other oblique muscle is not shown, but it lies on the other side of the ball, and comes round, and is inserted near the superior oblique; so that they pull opposite ways, like two men sawing timber. By the combined action of all these muscles, an infinite variety of motions of the eye can be produced.
GalleriesHuman Sensory Systems: Sight
Lee, Charles A. Human Physiology for the Use of Elementary Schools, 11th ed. (Buffalo: J. C. Derby & Co., 1847) 216