The diaphragm is innervated by the _________ nerve, which allows it to contract.

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Prepare for the JBL Module 2 Test with comprehensive study materials. Utilize multiple choice and flashcard tools, each question comes with hints and explanations. Enhance your exam readiness today!

Multiple Choice

The diaphragm is innervated by the _________ nerve, which allows it to contract.

Explanation:
The diaphragm’s ability to contract is controlled by a nerve that provides motor innervation to this respiratory muscle. This is the phrenic nerve, which arises from the cervical spinal cord segments C3 to C5 and travels to the diaphragm to trigger its contraction, increasing the thoracic cavity’s volume during inhalation. The nerve also carries sensory fibers from the surrounding pleura and pericardium, but its essential role is to drive diaphragmatic movement. Other nerves listed have different functions: vestibulocochlear handles hearing and balance; vagus supplies many organs and some throat muscles; hypoglossal moves the tongue.

The diaphragm’s ability to contract is controlled by a nerve that provides motor innervation to this respiratory muscle. This is the phrenic nerve, which arises from the cervical spinal cord segments C3 to C5 and travels to the diaphragm to trigger its contraction, increasing the thoracic cavity’s volume during inhalation. The nerve also carries sensory fibers from the surrounding pleura and pericardium, but its essential role is to drive diaphragmatic movement. Other nerves listed have different functions: vestibulocochlear handles hearing and balance; vagus supplies many organs and some throat muscles; hypoglossal moves the tongue.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy