Term
| How many bones does the cranium consist of? |
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Definition
| Eight (one frontal, two parietal, two temporal, one occipital, one sphenoid, and one ethmoid) |
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Term
| What does the skull consist of? |
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Definition
2 parts:
Neurocranium
Facial skeleton |
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Term
| What does the facial skeleton consist of? |
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Definition
| 14 bones: Maxilla X2, Nasal X2, Zygomatic X2, Lacrimal X2, Palatine X2, Inferior Nasal Conchae X2, Mandible X1, Vomer X1 |
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Term
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Definition
| the unossified remnants of the membranes in newborns in the skull |
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Term
| What are the major fontanelles? |
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Definition
Major fontanels are: anterior (ossified within 18-36 months), posterior,
mastoid and sphenoid which are ossified within 6 month or more |
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Term
| What are the four mentioned groups of mimetic muscles? |
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Definition
4 groups:
A- Muscles of the Scalp
B- Muscles in the region of eyelid
C- Muscles in the Nasal region
D- Muscle of the Mouth region |
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Term
| Epicranius Muscle consists of what? |
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Definition
| Has 2 bellies: Frontal, Occipital, and in between, the Galea Aponeurotica. |
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Term
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Definition
produces wrinkles in forehead and gives facial
expression of Astonishment. |
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Term
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Definition
All mimetic muscles by Facial
nerve (cranial nerve CNVII). |
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Term
| Orbicularis Oculi muscle consists of what and functions how? |
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Definition
Has 3 parts: Orbital , Palpebral and
Lacrimal .
Function: produces folds in lateral angle of the
eye, expression of Worry and concern. |
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Term
| Corrugator supercilli function and innervation |
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Definition
Pulls the skin and eyebrow down and medially.
Produces vertical folds. Protects against light.
Pathetic pain muscle.
Thinker’s brow expression
Innervation: All mimetic muscles by Facial (CNVII) N. |
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Term
| Orbicularis Oris M. function? |
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Definition
| Function: its contraction closes the mouth. Strong contraction gives a sucking shape. Expression of reserve |
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Term
| Buccinator Muscle characteristics? |
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Definition
Quadrilateral in shape.
Origin: mandible at 1st or 2nd molar region. Forms the pterygomandibular raphe. Extends to angle of the mouth and forms the lateral wall of its vestibule. |
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Term
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Definition
| Function: enables air to be blown out of the mouth. Pulls angle of the mouth laterally. Keeps the mucous membrane of the cheek free of folds. Contraction gives expression of satisfaction |
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Term
| Zygomaticus Major origin, insertion, and function? |
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Definition
Origin: zygomatic bone.
Insertion: angle of mouth.
Function: lifts the corner of the mouth upward,
giving expression of laughter or pleasure. |
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Term
| Zygomaticus Minor origin and insertion? |
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Definition
Origin: zygomatic bone
Insertion: nasolabial groove |
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Term
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Definition
(laughing muscle)
Function: together woth zygomatic major it
produces the nasolabial folds.
Its contraction gives expression of Action |
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Term
| Levator labii superioris origin? |
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Definition
| Origin: Infraorbital margin to skin of upper lip |
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