The trochlear nerve is the longest and thinnest of all cranial nerves, making it susceptible to trauma.
Which is the thickest cranial nerve?
The largest cranial nerve is trigeminal nerve. The smallest cranial nerve is abducens nerve. The thinnest cranial nerve is trochlear nerve.
Which is the longest cranial nerve?
The vagus nerve (cranial nerve [CN] X) is the longest cranial nerve in the body, containing both motor and sensory functions in both the afferent and efferent regards.
Which is the shortest nerve?
The trochlear nerve is unique among the cranial nerves in several respects: It is the smallest nerve in terms of the number of axons it contains. It has the greatest intracranial length.
Which cranial nerve is the fattest?
Side view. The trigeminal nerve is the largest cranial nerve and is the great sensory nerve of the head and face, and the motor nerve of the muscles of mastication.
What is the strongest nerve in human body?
Sciatic nerve, largest and thickest nerve of the human body that is the principal continuation of all the roots of the sacral plexus.
Which is the largest nerve in human body?
The sciatic nerve is the largest nerve in your body. It begins in your lower back and travels all the way down to the heel of your foot. You may have heard of a condition called sciatica in which painful sensations radiate from your lower back and down your leg.
Which is the sixth cranial nerve?
Cranial nerve six (CN VI), also known as the abducens nerve, is one of the nerves responsible for the extraocular motor functions of the eye, along with the oculomotor nerve (CN III) and the trochlear nerve (CN IV).
Which cranial nerve has highest number of branches?
Vagus nerve has the highest number of branches.
How do you test for the 12 cranial nerves?
The 12th (hypoglossal) cranial nerve is evaluated by asking the patient to extend the tongue and inspecting it for atrophy, fasciculations, and weakness (deviation is toward the side of a lesion).
What happens if the trigeminal nerve is damaged?
Trigeminal nerve injuries not only causes significant neurosensory deficits and facial pain, but can cause significant comorbidities due to changes in eating habits from muscular denervation of masticator muscles or altered sensation of the oral mucosa.
Which is the smallest cranial nerve in human?
The trochlear nerve is the fourth paired cranial nerve. It is the smallest cranial nerve (by number of axons), yet has the longest intracranial course.
How do you test cranial nerve 4?
Trochlear nerve (CN IV)
Cranial nerve IV acts as a pulley to move the eyes down—toward the tip of the nose. To assess the trochlear nerve, instruct the patient to follow your finger while you move it down toward his nose.
Can you see cranial nerves on MRI?
For radiologist, the knowledge of the anatomy of cranial nerves is crucial to evaluate the perineural spread. On MRI, it can be visualized as segmental nerve thickening and enhancement on post-gadolinium sequences.
What cranial nerve slows the heart?
The vagus nerve, historically cited as the pneumogastric nerve, is the tenth cranial nerve or CN X, and interfaces with the parasympathetic control of the heart, lungs, and digestive tract.
Which cranial nerve is responsible for Eye Movement?
Cranial nerve 3, also called the oculomotor nerve, has the biggest job of the nerves that control eye movement.