General Organisation Flashcards
What is another word for skull?
Cranuim
How many bones make up the skull?
22
What is shared by scalp and face?
Forehead
What are the two broad categories of facial muscles?
Facial Expression
Mastication (Chewing) so moves Jaw
How many muscles of mastication are there?
4
What are the muscles of mastication?
- Temporalis
- Medial Pteragoid
- Lateral Pteragoid
- Masseter
What nerve innervate the muscles of facial expression?
Facial nerve (Cranial nerve V!II) and branches of
What nerve innervates the muscles of mastication?
Trigeminal nerve (cranial nerve V)
What are the main artery and vein in face?
Facial artery and vein
What are the two main actions of muscles of facial expression?
Sphincters (round) - constrict
Dilators (Linear) - Pull
What joint do the muscles of mastication act on?
Temporomandibular joint
What are the five key extra-cranial branches of the facial (VII) nerve?
- Temporal
- Zygomatic
- Buccal
- Mandibular
- Cervical
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What is the relationship between the parotid gland and the facial nerve?
As the facial nerve passes anterio-inferiorly to the parotid, it bifurcates intoo the five major branches.
Therefore, if the parotid gland is damaged, it can cause facial paralysis.
What are the three main branches of the trigeminal nerve?
The trigeminal nerve (Cranial nerve V) is the main sensory nerve of the face. It is also motor to muscles of mastication.
- Ophthalmic division
- Maxillary division
- Mandibular division
What branch of trigeminal nerves gives rise to the motor function of muscles of mastication?
Mandibular division