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 extraocular or extrinsic eye muscles, considering their relatively small size, are incredibly strong and efficient. There are the six extraocular muscles, which act to turn or rotate an eye about its vertical, horizontal, and antero-posterior axes:n image of the object is focused upon the macula of each eye, and the brain merges the two retinal images into one. Sometimes, however, due to some type of extraocular muscle imbalance, one eye is not aligned with the other eye, resulting in a strabismus, also called a heterotropia or simply a tropia.