Face and Scalp Flashcards
What are the borders of the face?
The hairline, anterior border of external ears, and the chin
What are the general contents of the face
Eyes, mouth, nose, muscles of facial expression, buccal fat pad, parotid gland, facial artery and facial vein with branches, facial nerve branches, and trigeminal nerve branches
What type of fascia is in the face?
Only superficial fascia, no deep fascia at
What are the borders of the scalp?
Forehead, superior aspect of cranium, occipital region above superior nuchal line, and laterally, the scalp blends with the temporal area
What makes up the scalp proper?
Skin, connective tissue (superficial fascia), and aponeurosis (thick, dense CT)
What are the components of the scalp?
Skin Connective tissue Aponeurosis Loose Areolar CT Periosteum
Skin of scalp
Thickest layer, contains hair follicles
CT of scalp
Nerves and vessels transverse in CT layer
Aponeurosis of scalp
Blends and connects occipital and frontalis muscles
Loose areolar CT of scalp
Cotton-like, where movement occurs
Periosteum of scalp
CT covering the bone itself
Nerves of scalp
Supratrochlear Supraorbital Zygomaticotemporal Auriculotemporal Lesser Occipital Greater Occipital Third Occipital
What nerves of the scalp provide pain, temp, and touch sensations?
Supratrochlear, Supraorbital, and Zygomaticotemporal
What nerves of the scalp are branches of V1?
Supratrochlear and Supraorbital
What nerve of the scalp is a branch of V2
Zygomaticotemporal
What nerve of the scalp is a branch of V3
Auriculotemporal
What nerve of the scalp is a ventral rami branch of the cervical plexus?
Lesser Occipital, C2
What nerves of the scalp are branches of dorsal rami, and what are their roots?
Greater Occipital (C2) Third Occipital (C3)
What are the arteries of the scalp?
Supratrochlear Supraorbital Superficial Temporal Posterior Auricular Occipital
Which scalp arteries are internal carotid artery derivatives?
Supratrochlear artery
Supraorbital artery
Which scalp arteries are derivatives of the external carotid artery?
Superficial temporal artery
Posterior auricular artery
Occipital artery
Which of the scalp arteries is a terminal branch of the external carotid?
Superficial Temporal Artery
What is an emissary vein?
A vein that acts as a communication from superficial fascial and it goes through bone and dumps into a venous sinus. It can dump into the brain and shut the brain down (infections, this is can lead to meningitis)
What muscles make up the oral group of the muscles of facial expression?
Orbicularis oris Levator anguli oris Depressor anguli oris Zygomaticus major Risorius Levator labii superioris Levator labii superioris alaeque nasi Depressor labii inferioris Buccinator Mentalis
What is the primary function of the facial nerve?
Mainly a motor nerve, but it has a little sensory function
Orbicularis Oris
Circular muscle around the mouth
Lets you close your lips and protrude your lips
Cranial nerve VII
Levator Anguli Oris
Lifts corner of mouth
Depressor Anguli Oris
Pulls down corner of mouth
Zygomaticus Major
Pulls corner of mouth laterally and superiorly, laughing muscle
Risorius
Goes from the superficial fascia over the masseter to the superficial fascia over the mouth, pulls sides of the mouth laterally, and lets you grin
Levator Labii Superioris
Pulls the upper lip up
Levator Labii Superioris Alaeque Nasi
Lifts upper lip and alar cartilage of nose
Allows you to near, and flare nostrils, also lifts upper lip
Depressor Labii Inferioris
Pulls down lower lip
Buccinator
WANNABE muscle of mastication - connects bone to bone, free edge goes into the mouth, functions to keep stuff in the mouth, as well as sucking and blowing motions, innervated by CN VII
Mentalis
Protrudes lower lip - puppy-dog-face muscle
Modiolus
Where 8 muscles converge at the corner of your mouth
What muscles make up the nasal group of the muscles of facial expression?
Nasalis - compressor and dilator
Procerus
Depressor Septi
What muscle allows you to scrunch and wrinkle your nose, and squint your eyes?
Procerus
What muscle pulls down along the septum of your nose?
Depressor Septi
What muscles make up the orbital group of the muscles of facial expression?
Corrugator Supercilii
Orbicularis Oris which has orbital, palpenral, and lacrimal portions
What muscle pulls your eyebrow in an inferior and medial direction?
Corrugator Supercilii
Circular muscle around your eye
Orbicularis Oculi
What muscle hold your eyes shut very tightly?
Orbicularis Oculi - orbital part
What muscle aids in blinking and is found along your eyelids?
Palpebral portion of Orbicularis Oculi
What muscle aids in movement of tears?
Lacrimal portion of Orbicularis Oculi
What muscle lies on the superciliary ridge?
Corrugator Supercili muscle
Everything innervated by CN VII is from what pharyngeal arch?
Pharyngeal arch 2
What muscles make up the scalp group of the muscles of facial expression?
Occipitofrontalis, which is 1 muscle connected by the aponeurosis of the scalp, and the muscle has 2 parts:
Frontalis
Occipitalis
What muscle wrinkles the skin on the forehead?
Frontalis
What muscle wrinkles the skin on the back of the head?
Occipitalis
What makes up the neck group of the muscles of facial expression?
Platysma
What muscle elevates the skin on the upper chest?
Platysma
What muscles make up the Auricular group of the muscles of facial expression?
Auricularis anterior
Auricularis superior
Auricularis posterior
What do the auricularis muscles do?
Wiggle ear
What 8 muscles are innervated by branches of V3?
Temporalis Masseter Medial Ptyergoid Lateral Ptyergoid Anterior Digastric Mylohyoid Tensor Tympani Tensor Veli Palatini
What are the branches of the trigeminal nerve that provide sensory information to the face?
Supraorbital Supratrochlear Lacrimal Infratrochlear External Nasal Zygomaticofacial Infraorbital Auriculotemporal Buccal Mental
What are the facial sensory branches of V1?
Supraorbital Supratrochlear Lacrimal Infratrochlear External Nasal
What are the facial sensory branches of V2?
Zygomaticotemporal
Zygomaticofacial
Infraorbital
What are the facial sensory branches of V3?
Auriculotemporal
Buccal
Mental
What are the sensory nerves of the face from the cervical plexus?
Great Auricular Nerve (from C2 and C3)
Transverse Cervical Nerve (from C2 and C3)
What are the motor nerves to the face a branch of?
All the motor nerves to the face are branches of the facial nerve.
Where does the facial nerve come out of the skull?
Through the stylomastoid foramen
What are the branches of the facial nerve?
Temporofacial, which has 3 branches
Temporal, Zygomatic, and Buccal, which forms a loop with buccal of the cervicofacial nerve
And Cervicofacial, which has 3 branches, buccal, which forms a loop with the buccal of the temporofacial, mandibular, and cervical
In the head, there are 2 “buccal branches”. One from the trigeminal nerve, and one from the facial nerve. Which buccal branch is the motor nerve, and which is the sensory nerve?
Motor nerve is from facial nerve
Sensory nerve is from trigeminal, and it is called (in dentistry) the long buccal nerve
The arteries of the face are direct or indirect branches of what?
External carotid or internal carotid
What arteries of the face are derived from the external carotid?
Facial artery, which gives 3 branches: Superior labial, inferior labial, nasal branches Angular artery Superficial temporal artery Transverse facial artery Infraorbital artery Buccal artery Mental artery
What arteries of the face are derived from the internal carotid?
Supraorbital artery Supratrochlear artery Lacrimal artery Dorsal nasal artery External nasal artery
What is true about the angular artery?
The angular artery is the facial artery with a new name. It changes its name when it gets to the angle of the nose. The angular artery is an external carotid derivative, and it anastamoses with the internal carotid derivatives
What are the superficial drainage veins of the face?
They are the veins lying right under the superficial fascia, which is right under the skin Supraorbital Supratrochlear Angular Facial - with 3 branches: nasal branches, superior labial, inferior labial Superficial temporal Transverse facial Retromandibular (and branches)
What are the deep drainage veins of the face
The cavernous sinus and the pterygoid plexus
What are the communicating veins of the face?
Veins that communicate from superficial to deep parts of the face
Superior and inferior opthalamic
Infraorbital
Deep facial
What is the danger zone?
Triangle on your face, bacteria from upper lip to between eyebrows can get into your blood stream via cavernous sinus and get to your brain and kill you