Term
| What layer of tissue do the muscles of facial expression lie within and what do these muscles insert into? |
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Definition
-These muscles lie within the Subcutaneous tissue
-They insert into the skin of the face |
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Term
| Which muscle joins the two muscles of the scalp? |
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Definition
| The galea aponeurotica joins the two muscles of the scalp: the frontalis and the occipitalis |
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Term
| Which are the lip-raiser muscles? |
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Definition
Levator labii superioris alaeque nasi
1. Levator labii superioris
2. Zygomaticus major and minor
3. Risorius
4. Levator anguli oris |
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Term
| Which muscle of the mouth is the sphincter muscle? |
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Definition
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Term
| Which two muscles of the face are lip depressors? |
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Definition
1. Depressor anguli oris
2. Depressor labii inferioris |
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Term
| What are the attachments of the buccinator and what is its function? |
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Definition
Attachments:
*Posterior- pterygomandibular raphe'
*Anterior- mouth and orbicularis oris
Function:
*To press mucosa of cheek against teeth, moves food out of cheek and into the mouth to chew
(Note: this is NOT a muscle of mastication) |
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Term
| What are the 3 muscles of the nose? |
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Definition
| Procerus, nasalis, depressor septi |
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Term
| What are the 2 muscles surrounding the eye? |
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Definition
1. corrugator supercilii
2. Orbicularis oculi
-palpebral portion
-orbital portion |
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Term
| Which muscles does the Facial Nerve (CN VII) innervate? |
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Definition
-all muscles of facial expression
-stylohyoid and posterior belly of digastric muscles
-forms plexus with 5 branches (temporal, zygomatic, buccal, mandibular, cervical) |
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Term
| What is Bell's Palsy a disruption of what? |
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Definition
| the facial nerve (CN VII) |
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Term
| All sensory innervation to the facial region is provided by branches of the __________ except which area? |
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Definition
| All sensory innervation to the facial region is provided by branches of the *Trigeminal Nerve (CN V)* except the area over the angle of the mandible. |
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Term
| What are the cervical branches of the facial artery (4 of them)? |
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Definition
1. ascending palatine
2. Tonsilar
3. Glandular
4. Submental |
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Term
| What are the branches of the facial artery (4)? |
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Definition
1. inferior labial
2. superior labial
3. lateral nasal
4. angular |
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Term
| What does the facial vein drain into? |
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Definition
| The facial vein drains into the jugular vein |
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Term
| What does the angular vein have connections to? |
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Definition
Angular vein has connections to opthalmic veins of orbit and thru these veins connect to the dural (venous) sinuses of the brain.
-Danger area!-since infection can spread from face to cranial cavity |
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Term
| Branches of the CN VII are given off within what? |
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Definition
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Term
| Where does the Parotid duct (Stenson's Duct) penetrate? |
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Definition
| The Parotid duct penetrates the buccinator at the level of the maxillary second molar |
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Term
| What are the 5 layers of the scalp? |
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Definition
1. Skin: glands
2. Connective tissue: fat, hair follices, vv., nn.
3. Aponeurosis: galea aponeurotica
4. Loose areolar tissue: potential space
5. Periosteum: pericranium |
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Term
| Which cranial nerves provide sensory innervation to the scalp anteriorly and posteriorly? |
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Definition
*Anteriorly
CN V1: supratrochlear and supraorbital nn.
CN V2: zygomaticotemporal n.
CN V3: auriculotemporal n.
*Posteriorly
Lesser occipital n.
Greater occipital n. |
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Term
| What are the ways of blood supply to the scalp? |
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Definition
1. From the external carotid artery
-Superficial temporal a., posterior auricular a., occipital a.
2. From internal carotid artery
-Supratrochlear a., Supraorbital a.
3. Venous drainage
-into external or internal jugular vv. |
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Term
| Which facial muscles are the "smiling" muscles? |
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Definition
| Zygomaticus major and minor |
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Term
| Which muscle allows you to sneer? |
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Definition
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Term
| Which muscle allows you to grin? |
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Definition
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Term
| What does the Procerus do? |
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Definition
| *It contracts and pulls the skin of the nose up. You get horizontal wrinkles in your skin |
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Term
| What does contracting the corrugator supercilii cause? |
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Definition
| *vertical wrinkles in between your eyebrows on your forehead. (looking angry sort of) |
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Term
| What is the pathway of the facial nerve into the face? |
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Definition
| It exits the skull via the stylomastoid foramen, then it goes through the parotid gland to get to the face |
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