Cranial Nerves Flashcards
CN I
olfactory
CN II
optic
CN III
oculomotor
CN IV
trochlear
CN V
trigeminal
CN VI
abducent
CN VII
facial
CN VIII
vestibulocochlear
CN IX
glossopharyngeal
CN X
vagus
CN XI
accessory
CN XII
hypoglossal
where do cranial nerves arise from
the brain
where do the cranial nerves travel through to innervate their structures in the head and neck
the foramoina and fissures in the cranium
what are the main functions the cranial nerves carry out
sensory, motor and autonomic functions
what is the name for the front of the brain
the rostral
what is the name for the back of the brain
the caudal
oh, oh, oh, to touch and feel very green vegetables, a h
- olfactory
- optic
- oculumotor
- trochlear
- trigeminal
- abducens
- facial
- vestibulocochlear
- glossopharyngeal
- vagus
- accessory
- hypoglossal
where are the olfactory and optic nerve emerging from
the cerebrum
where do the oculomotor and the trochlear nerve emerge from
the mid brain
which cranial nerve arises from the dorsal aspect of the brain stem
trochlear
where does the trigeminal nerve arise from
the pons
where does the abducens, facial and vestibulocochlear nerve emerge from
they enter and exit at the pontomedullary junction
where does the spinal accessory nerve emerge from
the spinal cord
where does the glossopharyngeal, vagus and hypoglossal nerve emerge from
the medulla
are the optic and olfactory cranial nerves ACTUALLY nerves?
no they are brain projections that belong to the olfactory and optic tracts
where do motor fibres originate from
the brain
where do motor fibres carry signals
they carry them from the brain to the structures they innervate
what are efferent fibres
those that carry signals from the brain to the structures they innervate
what are afferent fibres
those that carry signals from receptors in the periphery to the brain
what are the types of motor fibres
somatic
somatic branchi
visceral motor
what are somatic motor fibres
fibres that innervate striated muscle under voluntary control
what are somatic branchi
these are found only in the cranial nerves and innervate voluntary muscles that develop embryologically from the branchial arches
what are visceral motor fibres
these are parasympatheetic fibres which constitute the cranial outflow of the parasympathetic division of the autonomic nervous system