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The tenth pair of cranial nerves, also known as the vagus nerves, includes a motor branch referred to as the cardiac nerve that supplies the heart muscles.

1. The tenth pair of cranial nerves, also known as the vagus nerves, includes a motor branch referred to as the cardiac nerve that supplies the heart muscles.
2. b)
3. c)
4. d)

Correct answer: The tenth pair of cranial nerves, also known as the vagus nerves, includes a motor branch referred to as the cardiac nerve that supplies the heart muscles.

Solution

The correct choice is the one that states the same fact: the vagus nerve is the tenth cranial nerve and gives off a cardiac branch to the heart. Since the answer key repeats that exact statement, it is the matching option.

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