Which nerve provides the principal motor supply to the diaphragm in domestic mammals?
Correct answer: A. Phrenic nerve
- A. Phrenic nerve
- B. Vagus nerve
- C. Intercostal nerve
- D. Sympathetic trunk
Explanation
The phrenic nerve carries the main motor fibers to the diaphragm and is essential for inspiration. The vagus supplies thoracic and abdominal viscera, while intercostal nerves mainly supply the thoracic wall.
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About Veterinary Anatomy and Physiology
Covers the gross and microscopic structure of domestic animals, including bones, joints, muscles, organs, blood vessels and nerves. It explains how the respiratory, cardiovascular, digestive, urinary, nervous, endocrine and reproductive systems function, with attention to species differences and the relationship between anatomical structure and physiological processes.
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