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An emergency medical technician is examining a trauma victim by shining a pen light into her patient's eye. She records the reactivity of the patient's pupils as they constrict when stimulated by the light. This test supports the patient has function of the oculomotor nerve (III).
What is oculomotor nerve?
The third cranial nerve, sometimes referred to as the oculomotor nerve, cranial nerve III, or simply CN III, is a cranial nerve that travels from the brain to the orbit through the superior orbital fissure and innervates the extraocular muscles that move the eyelid and allow for most eye movements. Additionally, the nerve has fibers that innervate the intrinsic eye muscles that control pupillary accommodation and constriction (ability to focus on near objects as in reading). The embryonic midbrain's basal plate is the source of the oculomotor nerve. The control of eye movement is likewise mediated by cranial nerves IV and VI.
Thus from above conclusion we can say that an emergency medical technician is examining a trauma victim by shining a pen light into her patient's eye. She records the reactivity of the patient's pupils as they constrict when stimulated by the light. This test supports the patient has function of the oculomotor nerve (III).
Learn more about the oculomotor nerve here:
https://brainly.com/question/29471186
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