Injury to cervical vertebra C3-C4 is particularly problematic because ________.
A) several ganglia are near this region that serve the heart
B) part of the brain stem is located here
C) the greater auricular nerve that serve the parotid gland receive there fibers from here
D) the phrenic nerve that serves the diaphragm receives its fibers from here

Question

Quizplus · Accepted Answer

The phrenic nerve that serves the diaphragm receives its fibers from the cervical vertebrae C3-C5. Injury to C3-C4, in particular, can lead to paralysis of the diaphragm and difficulty breathing.

Injury to Cervical Vertebra C3-C4 Is Particularly Problematic Because ________