The Optical nerver or the Second Cranial nerve controls and relays information absorbed through the rods and cones of the eye. Eye movements (eye muscles), however, are controlled by several other cranial nerves including the Oculomotor, Abducens, and Trochlear nerves.
The optic nerve (Cr. N II) is the sensory nerve of the eye, allowing for sight. Cranial nerves III, IV, and VI are the motor nerves to the muscles of the eye, allowing their movement.
Somatic sensory nerve impulses get to the brainstem from the head itself via the cranial nerves. Cranial nerves are also known as cerebral nerves.
This is simple; don't overthink it. The nerves that carry sensory impulses to the brain are the sensory nerves.
The question is asking what three cranial nerves are purely sensory in their function. Some relevant terms here are olfactory, optic, and auditory or vestibucochlear or acoustic nerves. The only three cranial nerves that are pure sensory in function are cranial nerve #1 : the olfactory nerve (smell), cranial nerve #2 : the optic nerve (sight), and cranial nerve #8 : the auditory/vestibucochlear/acoustic nerve (hearing).
glossopharyngeal, vagus
remember the word SAMESensory are AfferentMotor are Efferent
Somatic sensory nerve impulses get to the brainstem from the head itself via the cranial nerves. Cranial nerves are also known as cerebral nerves.
sensory nerve
There are 12 pairs of cranial nerves that are part of the PNS. These nerves are sensory, mixed and mostly motor.
Five cranial nerves are mixed or sensorimotor nerves:Trigeminal Nerve (V)Facial Nerve (VII)Glossopharyngeal Nerve (IX)Vagus Nerve (X)Accessory Nerve (XI)
There are the Mixed Nerves in the spinal column that carry both sensory and motor nerves, but these neurons have 2 different jobs that they do,& I know of no neurons doing both as the impulses travel to 2 different locations which couldn't be done at the same time.
Sensory nerves
Cranial nerves III (oculomotor), IV (trochlear), VI (abducens), XI (accessory), and XII (hypoglossal) are motor nerves only.
Cranial nerves VII, IX and X are called mixed nerves because they contain both motor and sensory nerves.
This is simple; don't overthink it. The nerves that carry sensory impulses to the brain are the sensory nerves.
I and II
Links That Stimulates sensory nerves to motor nerves
Cranial nerves are primarily sensory. These nerves are directly between the brain and the brainstem and are responsible for smell, vision, eye movement, facial sensation, and the tongue movement.