In a man the abducens nerve is injured. Which one of the following functions will be affected?
Correct answer: A. Movement of the eyeball
- A. Movement of the eyeball
- B. Movement of the tongue
- C. Swallowing
- D. Movement of the neck
Explanation
Abducens is the sixth cranial nerve that innervates the external rectus muscle of the eyeball. It is responsible for turning the eye outwards. The movement of the tongue is controlled by the hypoglossal nerve. Neck movements are controlled by the facial nerve. Swallowing is done by the glossopharyngeal.
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About Chemical Coordination and Hormones
Chemical coordination uses hormones released by endocrine glands and carried in blood to specific target cells. Coverage includes the pituitary, thyroid, pancreas, adrenal glands, ovaries and testes, feedback control, and the contrast between slower, longer-lasting hormonal responses and rapid nervous coordination.
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