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BMS Neuroanatomy Lecture 6: Cranial Nerves Continued

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BMS Neuroanatomy Lecture 6: Cranial Nerves Continued

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Questions and Answers

What is the primary function of the parasympathetic outflow of the vagus nerve on the heart?

Increased heart rate and contraction force

Initiation of cardiac arrhythmias

Maintenance of constant heart rate

Decreased heart rate and contraction force (correct)

Which of the following organs is NOT stimulated by the vagus nerve for secretion of digestive enzymes?

Adrenal glands (correct)

Pancreas

Salivary glands

Liver

What is the purpose of the gag reflex?

To stimulate digestion

To prevent choking (correct)

To regulate breathing

To facilitate swallowing

Which cranial nerve is responsible for the sensory arc of the gag reflex?

CN IX (Glossopharyngeal Nerve) Signup and view all the answers

What is the desired response of the gag reflex, regardless of the input side?

Bilateral contraction of the soft palate Signup and view all the answers

Which of the following is NOT a target response of the vagus nerve's parasympathetic outflow?

Increased heart rate Signup and view all the answers

What is the primary function of the GVE component of the vagus nerve?

Regulation of digestive processes Signup and view all the answers

Which of the following organs is NOT innervated by the vagus nerve?

Adrenal gland Signup and view all the answers

What is the purpose of the vagus nerve's innervation of the smooth muscle and glands of the thoracic and abdominal viscera?

To stimulate digestion and absorption Signup and view all the answers

What is the role of the vagus nerve in the regulation of the digestive system?

To stimulate the secretion of digestive enzymes Signup and view all the answers