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When the Major Axis of the Body Is Present, It

question 14

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When the major axis of the body is present, it signals the beginning of which prenatal developmental stage?


Definitions:

Inferior Oblique

A muscle in the eye that contributes to the upward and outward movement of the eyeball.

Optic Canal

A narrow passageway in the sphenoid bone of the skull through which the optic nerve and ophthalmic artery pass to the eye.

Agonist

A substance that fully activates the receptor it binds to, producing a maximal biological response.

Inferior Rectus

A muscle in the eye that controls downward eye movements, part of the extraocular muscles.

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