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Question 678
Anatomy → Region
Classification
Question
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Anatomy
Question Stem
Which nerves provide sensory innervation to the peripheral part of the diaphragm?
Options
A
Phrenic nerves only
B
Vagus nerves
C
Lower six intercostal nerves
D
Sympathetic trunks
E
Recurrent laryngeal nerves
Explanation
Motor innervation of the diaphragm is provided by the phrenic nerves, whereas sensory innervation of the peripheral diaphragm is provided by the lower six intercostal nerves.
Option Validity
A) Phrenic nerves provide the motor supply; peripheral sensory supply is from intercostal nerves.
B) The vagus is not described as supplying peripheral diaphragmatic sensation.
D) The sympathetic trunks are not the stated peripheral sensory supply.
E) Recurrent laryngeal nerves supply the larynx.
Further Reading
Saxena - MRCOG-1 Basic Sciences, Chapter 2: Anatomy, Printed p.12.