Which cranial nerves have only motor functions?
Cranial nerves I, II, and VIII are pure sensory nerves. Cranial nerves III, IV, VI, XI, and XII are pure motor nerves. Cranial nerves V, VII, IX, and X are mixed sensory and motor nerves. The olfactory nerve (CN I) contains special sensory neurons concerned with smell.
Which cranial nerves have motor functions only quizlet?
Terms in this set (12)
- CN I Olfactory nerve. sensory only.
- CN II Optic nerve. sensory only.
- CN III Oculomotor nerve. motor only.
- CN IV Trochlear nerve. motor only.
- CN V Trigeminal nerve. both sensory and motor.
- CN VI Abducens nerve. motor only.
- CN VII Facial nerve. both sensory and motor.
- CN VIII Vestibulocochlear nerve. sensory only.
How many cranial nerves have only motor function?
There are four cranial nerves with primarily motor function.
What cranial nerve is exclusively sensory?
There are twelve pairs of cranial nerves out of which the olfactory (cranial nerve I) and the optic nerve (cranial nerve II) are considered as the nerves that perform sensory function exclusively.
Which cranial nerve is not involved in eye movement?
Which cranial nerve is NOT involved in eye movement? EXCEPT: trochlear nerve (IV).
Which cranial nerves has both sensory and motor functions quizlet?
Cranial Nerve VII has both sensory and motor functions.
What is the main function of CN XI?
This nerve supplies the sternocleidomastoid and trapezius muscles, which have the following functions: Rotation of head away from the side of the contracting sternocleidomastoid muscle. Tilting of the head toward the contracting sternocleidomastoid muscle. Flexion of the neck by both sternocleidomastoid muscles.
When a neurologist asks a patient to smile which cranial nerve is being tested?
Cranial Nerve VII – Facial Nerve
Ask the patient to smile, show teeth, close both eyes, puff cheeks, frown, and raise eyebrows. Look for symmetry and strength of facial muscles. See Figure 6.18 for an image of assessing motor function of the facial nerve.