Superficial Face Flashcards
Which two nerves provide somatosensory innervation for the superficial face?
> Trigeminal Nerve (CN V)
> Facial Nerve (CN VII)
Which two nerve provide somatomotor innervation to the superficial face?
> Trigeminal Nerve (CN V) - muscle of mastication
> Facial Nerve (CN VII) - muscles of facial expression
GSE (general somatic efferent)
motor to somatic voluntary skeletal muscle
GSA (general somatic afferent)
sensory from skin, joints, muscle, nasal, and oral cavity
GVE (general visceral efferent)
autonomic efferents, motor to smooth muscle
GVA (general visceral afferent)
sensory to gut, blood vessels, glands and internal organs
SSA (special somatic afferent)
special senses - vision, auditory, and vestibular
SVA (special visceral afferent)
special senses - taste and smell
SVE (special visceral efferent)
motor to voluntary skeletal muscles derived from branchial arches (CN V, VII, IX, X, XI)
Which nerves supply sensory innervation to the superficial face and scalp?
> greater occipital nerve (C2) > lesser occipital nerve (C2) > greater auricular nerve (C2-C3) > trigeminal nerve (CN V) - GSA > Facial nerve (CN VII) - GSA (only skin of outer ear)
What dorsal rami does the greater occipital nerve arise from?
dorsal rami of C2
What specific area does the greater occipital nerve (C2) provide sensory innervation to?
Innervates scalp on back of head.
From below what landmark does the greater occipital nerve emerge?
Emerges from below suboccipital triangle.
below obliquus capitis inferior muscle
What ventral rami does the lesser occipital nerve arise?
ventral rami of C2
What specific area does the lesser occipital nerve (C2) provide sensory innervation to?
Innervates scalp on lateral area of head, posterior to ear.
What nerve provides sensory innervation to the scalp on back of the head?
greater occipital nerve
What nerve provides sensory innervation to the scalp on lateral area of head, posterior to the ear?
lesser occipital nerve
What ventral rami and dorsal rami does the greater auricular nerve arise?
Ventral rami of C2 and dorsal rami of C3.
What specific area does the greater auricular nerve (C2,C3) provide sensory innervation to?
Innervates skin over parotid gland and mastoid process along with both surfaces of outer ear.
What nerve provides sensory innervation to the skin over parotid gland and mastoid process along with both surfaces of the outer ear?
greater auricular nerve
Which cranial nerve provides sensory innervation to only the skin of the outer ear?
Facial Nerve (CN VII)
What specific area does the three branches of the trigeminal nerve provide sensory innervation to?
Innervates skin on all of face, forehead, temporal region, oral cavity, skin of outer ear, and external auditory meatus.
Which branch of the trigeminal nerve is CN V1?
ophthalmic n.
Which branch of the trigeminal nerve is CN V2?
maxillary n.
Which branch of the mandibular nerve is CN V3?
mandibular n.
Which two nerve for sensory innervation are general somatic afferent?
> trigeminal nerve (CN V)
> facial nerve (CN VII)
Where does the trigeminal nerve branch, V1 - ophthalmic nerve, exit the skull?
superior orbital fissure (SRO-stand room only)
Where does the trigeminal nerve branch, V2 - maxillary nerve, exit the skull?
foramen rotundum
Where does the trigeminal nerve branch, V3 - mandibular nerve, exit the skull?
foramen ovale
What are the major branches of the V1 - ophthalmic nerve?
> frontal n. - supraorbital n. - supratrochlear n. > lacrimal n. > nasociliary n. - infratrochlear n. - external nasal n. (from anterior ethmoidal n.)
Where does the supraorbital nerve, a branch off of the frontal nerve, exit the skull?
supraorbital foramen
What specific area does the supraorbital nerve, a branch off of the fontal nerve, provide sensory innervation to?
Skin of lateral forehead and anterior scalp.
What specific area does the supratrochlear nerve, a branch off of the frontal nerve, provide sensory innervation to?
Skin on medial forehead.
What specific structure does the lacrimal nerve, a branch off of the V1 - ophthalmic nerve, innervate?
Innervates lacrimal gland.
What specific area does the infratrochlear nerve, a branch off of the nasociliary nerve, provide sensory innervation to?
Skin lateral to root of nose.
What specific area does the external nasal nerve, a branch from the anterior ethmoidal nerve, provide sensory innervation to?
Skin of nasal ala, vestibule, and dorsum of nose.
What are the major branches off of the V2 - maxillary nerve that provide sensory innervation?
- infraorbital nerve
- zygomaticofacial nerve
- zygomaticotemporal nerve
Where does the infraorbital nerve, a branch off of the V2 - maxillary nerve, exit the skull?
infraorbital foramen
What specific area does the infraorbital nerve, a branch off of the V2 - maxillary nerve, provide sensory innervation to?
> maxillary sinus
> skin of cheek, lateral nose, superior lip
What specific area does the zygomaticofacial nerve, a branch off of the zygomatic nerve, provide sensory innervation to?
Skin on prominence of cheek.
What specific area does the zygomaticotemporal nerve, a branch off of the zygomatic nerve, provide sensory innervation to?
Anterior part of temporal fossa.
What nerve provides sensory innervation to the anterior part of the temporal fossa?
zygomaticotemporal nerve
V2 - maxillary nerve
What nerve provides sensory innervation to the skin on the prominence of the cheeks?
zygomaticofacial nerve
V2 - maxillary nerve
What nerve provides sensory innervation to the maxillary sinus and the skin of the cheek, lateral nose, and superior lip?
infraorbital nerve
V2 - maxillary nerve
Which nerve provides sensory innervation to the skin of the nasal ala, vestibule, and dorsum of nose?
external nasal nerve (from anterior ethmoidal nerve)
V1 - ophthalmic nerve
Which nerve provides sensory innervation to the skin lateral to the root of the nose?
infratrochlear nerve
V1 - ophthalmic nerve
Which nerve provides sensory innervation to the skin of the medial forehead?
supratrochlear nerve
V1 - ophthalmic nerve
Which nerve passes through the supraorbital foramen and provides sensory innervation to the skin of lateral forehead and the anterior scalp?
supraorbital nerve
V1 - ophthalmic nerve
Which nerve innervates the lacrimal gland?
lacrimal nerve
V1 - ophthalmic nerve
What are the 3 major branches off of the V3 - mandibular nerve that provide sensory innervation?
- auriculotemporal nerve
- buccal nerve
- mental nerve
What specific area does the mental nerve, a branch off of the V3 - mandibular nerve, provide sensory innervation to?
Skin of the chin and inferior lip.
Through which foramen does the mental nerve pass through?
mental foramen
What nerve provides sensory innervation to the skin of the chin and inferior lip?
mental nerve
V3 - mandibular nerve
What nerve provides sensory innervation to the skin and oral mucosa of the cheek and gums?
buccal nerve
V3 - mandibular nerve
What specific area does the buccal nerve, a branch off of the V3 - mandibular nerve, provide sensory innervation to?
Skin and oral mucosa of cheek and gums.
What specific area does the auriculotemporal nerve, a branch off of the V3 - mandibular nerve, provide sensory innervation to?
Skin posterior 2/3 of temporal region.
What nerve provides sensory innervation to the skin posterior 2/3 of the temporal region?
auriculotemporal nerve
V3 - mandibular nerve
What are the four muscles of mastication?
- masseter
- temporalis
- medial pterygoid
- lateral pterygoid
What nerve provides all motor innervation to the muscles of mastication?
CN V3 (mandibular branch)