Scalp and Face Physiology Flashcards
What are the borders of the scalp?
Superior nuchal line on posterior aspect of the skull to the supraorbital margins
What layers does the scalp consist of?
Skin Connective tissue Aponeurosis Loose connective tissue Pericranium
How are the occipitalis and frontalis muscles connected?
Epicranial aponeurosis
Which layer allows free movement of the scalp?
Loose connective tissue
Which muscle supplies the occipitofrontalis m.?
Facial n. CN VII
Does the scalp have a rich blood supply?
Yes
Why are emmissary veins of clinical importance?
Do not have valves
Infections can be transmitted from the scalp to the cranial cavity
Why do scalp laceration bleed profusely?
Due to lack of vasoconstriction
Which arteries supply the scalp?
Supraorbital and Supra trochlear from Ophthalmic artery .
Superficial temporal, Post.auricular and Occipital from the External carotid artery.
Which veins drain the scalp?
Supraorbital and Supratrochlear to Facial vein.
Sup.temporal, Post. Auricular and Occipital
What do muscles of facial expression allow?
enable us to move our skin and change our facial expression.
Which nerve supplies all muscles of facial expression?
CN VII
