Cranial nerve II
The cranial nerve that carries only motor information is the hypoglossal nerve, also known as cranial nerve XII. It is responsible for controlling the muscles of the tongue, which are essential for speech and swallowing. Unlike other cranial nerves, the hypoglossal nerve does not carry sensory information.
The optic nerve (cranial nerve II) carries sensory information about light intensity to the brain as part of the afferent pathway in the pupillary reflex.
the dorsal horn is involved in sensory functions
The olfactory nerve, responsible for the sense of smell, is the only cranial nerve that originates directly from the forebrain. It carries sensory information from the nose to the brain for processing.
The nerve responsible for relaying sensory information to the brain is the cranial nerve. Each cranial nerve is associated with a specific type of sensory input, such as vision (optic nerve) or taste (glossopharyngeal nerve).
The cranial nerve that carries only motor information is the hypoglossal nerve, also known as cranial nerve XII. It is responsible for controlling the muscles of the tongue, which are essential for speech and swallowing. Unlike other cranial nerves, the hypoglossal nerve does not carry sensory information.
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).
The optic nerve (cranial nerve II) carries sensory information about light intensity to the brain as part of the afferent pathway in the pupillary reflex.
The olfactory nerve (CN I) is the only cranial nerve directly attached to the cerebrum. It carries sensory information for smell from the nasal cavity to the brain.
Relay and processing centers for sensory information.
the dorsal horn is involved in sensory functions
cerebellum
The thalamus
The olfactory nerve, responsible for the sense of smell, is the only cranial nerve that originates directly from the forebrain. It carries sensory information from the nose to the brain for processing.
Neurons that convey sensory information are called 'sensory neurons' or "afferent neurones"
The vestibulocochlear nerve, also known as cranial nerve VIII, is responsible for transmitting sensory information from the cochlea of the inner ear (responsible for hearing) and the semicircular canals (responsible for balance) to the brainstem.
The cranial nerves have various functions related to sensory, motor, or both. Some cranial nerves are primarily sensory, transmitting information from the senses like taste, smell, and vision to the brain. Others are mainly motor, controlling movements of the face, head, and neck muscles. Some cranial nerves have both sensory and motor functions, allowing for a combination of sensory input and motor control.