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.
There are 6 muscles around the eye that are responsible for eye movement. They are called the superior rectus, inferior rectus, lateral rectus, medial rectus, superior obliqu â¦ e and inferior oblique.There are two muscles that affect the iris (color of the eye), they are the iris sphincter and iris dilator muscles.   Extrinsic muscles are voluntary muscles,external to the eye, that control the direction the eye moves in e.g looking left or right.   Intrinsic muscles are wit â¦ hin the eye, such as those that control the size of the pupil.