Cranial Nerve Summaries (p 162-166) Flashcards
II Optic
Primary Sensory Neuron Cell Body Location - Secondary… - Function
Inner nuclear lamina of retina (bipolar neuron) - Ganglion lamina of Retina (ganglion cell) - Vision Special Sensory
I Olfaction
Primary Sensory Neuron Cell Body Location - Secondary… - Function
Olfactory Mucosa (olfactory bipolar neuron) - Olfactory Bulb (mitral cell)- Smell Special Sensory
III Oculomotor
Primary Sensory Neuron Cell Body Location - Secondary … - Function
Gasserion (trigeminal, semilunar) ganglion - Spinal Trigeminal Nuc. - Somatic Sensation
Mesencephalic Nucleus - Oculomotor Nuclear Complex (motor) - Motor Reflex
Mesencephalic Nucleus - Spinal Trigeminal Nuc. - Somatic Sensation
IV Trochlear
Primary sensory neuron cell body location - Secondary … - Function
Gasserion (trigeminal, semilunar) ganglion - Spinal Trigeminal Nuc. - Somatic Sensation
Mesencephalic Nucleus - Trochlear Motor Nuc. - Motor Reflex
Mesencephalic Nucleus - Spinal Trigeminal Nuc. - Somatic Sensation
V Trigeminal
Primary sensory neuron cell body location - Secondary … - Function
Gasserion (trigeminal, semilunar) ganglion - Principal Sensory Nuc. - Somatic Sensation
Gasserion (trigeminal, semilunar) ganglion - Spinal Trigeminal Nuc. - Somatic Sensation
Mesencephalic Nucleus - Trigeminal Motor Nuc. - Motor Reflex
Mesencephalic Nucleus - Spinal Trigeminal Nuc. - Somatic Sensation
VI Abducens/ Abducent
Primary sensory neuron cell body location - Secondary … - Function
Gasserion (trigeminal, semilunar) ganglion - Spinal Trigeminal Nuc. - Somatic Sensation
Mesencephalic Nucleus - Abducent Motor Nuc. - Motor Reflex
Mesencephalic Nucleus - Spinal Trigeminal Nuc. - Somatic Sensation
VII Facial
Primary sensory neuron cell body location - Secondary … - Function
Geniculate ganglion - Spinal Trigeminal Nuc. - Somatic Sensation
Geniculate ganglion - Nuc. Solitarius (gustatory nuc.) - Taste/ Sensation/ Special Visceral
VIII Vestibulocochlear
Primary sensory neuron cell body location - Secondary … - Function
Vestibular (Scarpa’s) Ganglion (Bipolar Neurons) - Vestibular Nuclear Complex- Equilibrium/ Special Sensory
Spiral Ganglion of the Cochlea (bipolar neurons) - Cochlear Nuc. - Hearing/ Special Sensory
IX Glossopharyngeal
Primary sensory neuron cell body location - Secondary … - Function
Jugular (superior glossopharyngeal) Ganglion - Spinal Trigeminal Nuc. - Somatic Sensation
Petrosal (inferior glossopharyngeal) Ganglion - Nuc. Solitarius (Cardiorespiratory Nuc.) - Visceral Sensation
Petrosal (inferior glossopharyngeal) Ganglion - Nuc. Solitarius (Gustatory Nuc.) - Taste Sensation/ Special Visceral
X Vagus
Primary sensory neuron cell body location - Secondary … - Function
Superior Vagal (jugular) ganglion - Spinal Trigeminal Nuc. - Somatic Sensation Inferior Vagal (nodose) ganglion - Nuc. Solitarius (cardiorespiratory nuc.) - Visceral Sensation Inferior Vagal (nodose) ganglion - Nuc. Solitarius (gustatory nuc.) - Taste sensation/ Special Visceral
III Oculomotor (Branchial & Somatic Motor)
Cell body location &
Target Muscles
Oculomotor Nuclear Complex
Extrinsic eye muscles: superior rectus, medial rectus, inferior rectus, and inferior oblique;
also levator palpebrae superior
IV Trochlear (Branchial & Somatic Motor)
Cell body location &
Target Muscles
Trochlear Motor Nuc.
Superior oblique, extraocular muscle
Vc Mandibular Division, Trigeminal (Branchial & Somatic Motor)
Cell body location &
Target Muscles
Trigeminal Motor Nuc.
Temporalis, Masseter, Medial & Lateral Pterygoid, Mylohyoid, Anterior Belly of Digastric
VI Abducent or Abducens (Branchial & Somatic Motor)
Cell body location &
Target Muscles
Abducens Motor Nuc.
lateral rectus extraocular muscle
VII Facial (Branchial & Somatic Motor)
Cell body location &
Target Muscles
Facial Motor Nuc.
Muscles of Face, Scalp, Auricle;
Stapedius, Stylohyoid, Posterior Belly of Digastric
IX Glossopharngeal (Branchial & Somatic Motor)
Cell body location &
Target Muscles
Nuc. Ambiguus
stylopharyngeus
X Vagus (Branchial & Somatic Motor)
Cell body location &
Target Muscles
Nuc. Ambiguus
Pharyngeal constrictors, muscles of the soft palate, cricothyroid, palatoglossus
XI Spinal Accessory (Branchial & Somatic Motor)
Cell body location &
Target Muscles
Nuc. Ambiguus- intrinsic muscles of larynx
Spinal Nuc. (C1-C5 near ventral horn location) - Sternocleidomastoideus & Trapezius
XII Hypoglossal (Branchial & Somatic Motor)
Cell body location &
Target Muscles
Hypoglossal Motor Nuc.
Genioglossus, styloglossus, hyoglossus, & intrinsic muscles of the tongue
III Oculomotor (Parasympathetic) Nuc. of Origin - Ganglion - Target Organ
Accessory Oculomotor (Edinger-Westphal) - Ciliary - Ciliaris, Sphincter Pupillae (intrinsic eye ms)
VII Facial (Parasympathetic) Nuc. of Origin - Ganglion - Target Organ
Superior Salivatory - Submandibular - Submandibular & sublingual glands
Superior Salivatory - Pterygopalatine (sphenopalatine, Meckel’s) - Lacrimal gland
IX Glossopharyngeal (Parasympathetic) Nuc. of Origin - Ganglion - Target Organ
Inferior Salivatory - Otic (Arnold’s) - Parotid Gland
X Vagus (Parasympathetic) Nuc. of Origin - Ganglion - Target Organ
Dorsal vagal - Intramural - Viscera of Neck, thorax, abdomen, & upper pelvis
I Olfactory (Exit Sites) Cranial Vault Location - Exit Name - Opens Into
Anterior Cranial Fossa - Cribriform Plate - Nasal Cavity
II Optic (Exit Sites) Cranial Vault Location - Exit Name - Opens Into
Middle Cranial Fossa - Optic Canal - Orbit
III Oculomotor (Exit Sites) Cranial Vault Location - Exit Name - Opens Into
Middle Cranial Fossa - Superior Orbital Fissure - Orbit
IV Trochlear (Exit Sites) Cranial Vault Location - Exit Name - Opens Into
Middle Cranial Fossa - Superior Orbital Fissure - Orbit
Va Opthalmic division, Trigeminal (Exit Sites)
Cranial Vault Location - Exit Name - Opens Into
Middle Cranial Fossa - Superior Orbital Fissure - Orbit
Vb Maxillary division, Trigeminal (Exit Sites)
Cranial Vault Location - Exit Name - Opens Into
Middle Cranial Fossa - Foramen Rotundum - Pterygopalatine Region
Vc Mandibular division, Trigeminal (Exit Sites)
Cranial Vault Location - Exit Name - Opens Into
Middle Cranial Fossa - Foramen Ovale - Infratemporal Region
VI Abducent (Exit Sites) Cranial Vault Location - Exit Name - Opens Into
Middle Cranial Fossa - Superior Orbital Fissure - Orbit
VII Facial (Exit Sites) Cranial Vault Location - Exit Name - Opens Into
Posterior Cranial Fossa - Internal Acoustic Meatus - Parotid Region
VIII Vestibulocochlear (Exit Sites) Cranial Vault Location - Exit Name - Opens Into
Posterior Cranial Fossa - Internal Acoustic Meatus - No Exit
IX Glossopharyngeal (Exit Sites) Cranial Vault Location - Exit Name - Opens Into
Posterior Cranial Fossa - Jugular Foramen - Neck
X Vagus (Exit Sites) Cranial Vault Location - Exit Name - Opens Into
Posterior Cranial Fossa - Jugular Foramen - Neck
XI Spinal Accessory (Exit Sites)
Cranial Vault Location - Exit Name - Opens Into
Posterior Cranial Fossa - Jugular Foramen - Neck
XII Hypoglossal (Exit Sites) Cranial Vault Location - Exit Name - Opens Into
Posterior Cranial Fossa - Hypoglossal Canal - Neck
Facial Nerve
(Exit Openings for Facial Nerve & Branches from Skull)
Exit Name - Opens Into
Stylomastoid Foramen - Parotid Region
Vidian Nerve
(Exit Openings for Facial Nerve & Branches from Skull)
Exit Name - Opens Into
Vidian Canal - Pterygopalatine Region
Chorda Tympani Branch
(Exit Openings for Facial Nerve & Branches from Skull)
Exit Name - Opens Into
Petrotympanic Fissure - Infratemporal region