Musculus rectus superior bulbi (click the link to right of "Synonyms") originates in the superior part of common tendinous ring of the eye and inserts in the superior part of sclera of the eye. Primary action: elevation; secondary action: adduction and intorsion (inward twisting or turning). Nerve supply: oculomotor nerve. Synonym: attollens oculi (lifting muscle of the eye).
The term atop the page means upper straight muscle of the eyeball.