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Questions and Answers
Where does the Vagus Nerve originate from?
Where does the Vagus Nerve originate from?
- Midbrain
- Cerebellum
- Pons
- Medulla oblongata (correct)
Through which foramen does the Vagus Nerve pass after descending in the neck?
Through which foramen does the Vagus Nerve pass after descending in the neck?
- Foramen magnum
- Foramen lacerum
- Foramen ovale
- Jugular foramen (correct)
What does the pharyngeal branch of the Vagus Nerve consist mainly of?
What does the pharyngeal branch of the Vagus Nerve consist mainly of?
- Sensory fibers for the tongue
- Filaments from the cranial root of accessory nerve (correct)
- Motor fibers for the larynx
- Parasympathetic fibers for the salivary glands
Where is the inferior ganglion of the Vagus Nerve located?
Where is the inferior ganglion of the Vagus Nerve located?
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Where do the cardiac branches of the Vagus Nerve end?
Where do the cardiac branches of the Vagus Nerve end?
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Study Notes
Vagus Nerve Origin and Pathway
- Originates from the medulla oblongata in the brainstem, part of the cranial nerves.
- Passes through the jugular foramen after descending in the neck.
Pharyngeal Branch
- Consists mainly of motor fibers that innervate muscles of the pharynx and soft palate, crucial for swallowing.
Inferior Ganglion Location
- Located in the jugular foramen, involved in sensory functions of the Vagus Nerve.
Cardiac Branches
- The cardiac branches terminate at the heart, regulating heart rate and autonomic control of cardiac functions.
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