Which of the following cranial nerves innervates heart, stomach and lungs?
A
Vagus
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B
Accessory
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C
Trigeminal
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D
Trochlear
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Solution
The correct option is A Vagus The vagus is the longest of all cranial nerves. It extends from the brain stem to the abdomen via various organs including the heart, oesophagus and lungs. The vagus forms part of the involuntary nervous system and controls unconscious body procedures, such as keeping the heart rate constant and controlling food digestion.