G3 Skull, Face, Scalp Flashcards
Cranial bones that protect brain
Neurocranium
Facial bones that protect airway
Viscerocranium
Fracture of Pterion can cause hemorrhaging of _____.
Middle meningeal artery
Bregma correlates embryologically with ____
Anterior fontanel
Lambda correlates embryologically with ____
Posterior fontanel
Boundaries of Orbit:
Roof- Frontal b. Lat. wall- Zygomatic b. Floor/medial wall- Maxilla b. Medial wall- Lacrimal and ethmoid bb. Posterior wall- Sphenoid b.
Boundaries of Nasal Cavity:
Roof- Nasal bones, Frontal sinus, Ethmoid, Sphenoid sinus
Floor/lat wall- Maxillary b.
Floor- Palatine horizontal plate
Medial- Vomer, perpendicular plate of ethmoid, nasal septum
The superior and middle nasal conchae are part of the ____ bone, while the inferior nasal conchae are ____ bones.
Ethmoid
Separate
Anterior cranial fossa is the most ____ in the cranial vault.
Posterior cranial fossa is the most _____ in the cranial vault.
Superior
Inferior
Make skull bones lighter, add resonance to voice, lined by mucosal membranes, continuous with nasal cavity.
Paranasal Sinuses
Layers of Scalp:
Skin Connective Tissue (dense) Aponeurotic layer Loose Connective Tissue Pericranium
Superficial wounds into the ___ layer of the scalp tend to bleed profusely (highly vascularized)
Deep wounds into the ___ layer gape widely (muscles pull this open)
C
A
Danger space of scalp. Infections spread easily in this layer (Travel into cranial cavity through emissary veins to meninges; fluid moves anteriorly into eyelids and root of nose)
Loose Areolar Tissue
This muscle moves the scalp back and forward
Occipitofrontalis m. (Occipitalis m., Galea Aponeurotica, Frontalis m.)
Protract, elevate, and retract ears
3 Auricularis mm.
Raises eybrow (surprise)
Frontalis m.
Draws eyebrow in (frowning)
Curragator Supercilii m.
Closes eye (winking)
Orbicularis Oculi m.
Wrinkles bridge of nose
Procerus m.
Compresses and dilates nostril
Nasalis m.
Levator Labii Superioris Alaeque Nasi m. Function?
Dilates nostril