Vasco Nunez de Balboa went on to discover new lands and was appointed governor of different regions in the Americas. One of his biggest achievements was that of crossing over the southern part of the continent by crossing the present day Isthmus of Panama.
Muscles of the eyes. The are six muscles of the eyes responsible for movement of the eye. These muscles function in Agonist and Antagonist pairs enabling us to move our eyeballs in the cardinal directions, up, down, left and right. There are six muscles which are responsible for controlling the movement of the eyeballs.
The medial rectus muscle is the largest of the eyeâs extraocular movement muscles, six individual muscles that surround the eye and help control the eye's movement.The other five extraocular muscles are the lateral rectus, superior oblique, superior rectus, inferior rectus, and the inferior oblique.he medial rectus muscle is the largest of the eyeâs extraocular movement muscles, six individual muscles that surround the eye and help control the eye's movement.