Any Pair of Extra-Ocular Muscles Can Work as Agonists, Promoting

question 19

Multiple Choice

Any pair of extra-ocular muscles can work as agonists, promoting motion in a common direction, or as antagonists, promoting motions in opposite directions. The basis for this statement is that

• A) The two eyes can exhibit conjugate movements but not disjunctive movements
• B) The two eyes can exhibit disjunctive movements but not conjugate movements
• C) The two eyes cannot exhibit conjugate movements or disjunctive movements
• D) None of the above

---

Definitions:

Auditory Nerve

A cranial nerve that transmits sound information from the cochlea in the inner ear to the brain.

Ossicles

Three tiny bones in the middle ear known as the malleus, incus, and stapes, which play a critical role in transmitting sound vibrations to the inner ear.

Place Theory

A theory that suggests that our perception of sound depends on where each component frequency produces vibrations along the basilar membrane of the cochlea.

Hermann von Helmholtz

A German physician and physicist who made significant contributions to the understanding of the physiology of vision, hearing, and electromagnetism.