Scalp Flashcards
what are the layers of the scalp
o S: Skin. o C: Connective tissue. o A: Aponeurosis. o L: Loose connective tissue. o P: Periosteum.
what nerve innervated scalp
Branches of the trigeminal nerve
lesser occipital nerve greater occipital nerve
scalp layer that is Continuous with eyelids and root of nose
Loose Connective Tissue
Blood Supply of the Scalp
Branches of internal and external carotid arteries, including
- supraorbital,
- superficial temporal,
- posterior auricular,
- occipital arteries
Infection in layer 4 of scalp (loose CT) can spread to cranial cavity via
emissary veins to dural venous sinuses.
3 sections of Occipitofrontalis
Frontalis muscle belly
Epicranial aponeurosis
Occipitalis muscle belly
action of Frontalis muscle
elevates eyebrows
Orbicularis oculi action
closes eyelids, protects eye
Orbicularis oculi 2 parts
- Palpebral Part
2. Orbital Part
Action: gently closes eyelids
Palpebral Part
Major Muscles of Facial Expression nerve
facial CN 7
motor innervation to the occipitalis belly of occipitofrontalis
Facial: posterior auricular nerve
5 branches of facial
(Posterior auricular) o Temporal o Zygomatic o Buccal o Mandibular o Cervical
what nerve peirces parotid gland
facial
how does the facial nerve exit the skull
stylomastoid foramen
This layer allows the first three layers (skin, connective tissue, aponeurosis) to slide over it as one unit
loose connective tissue
what layer of the scalp is the danger zone
loose connective tissue
infection of CN 7
bells palsy
supraorbital nerve is a branch of what nerve
opthamic nerve (V1)
infraorbital nerve is a branch of what nerve
maxillary
facial artery is a branch of
external carotid
o Gives off superior and inferior labial arteries to the upper and lower lips
facial artery
ophthalmic artery is a branch of what artery
internal carotid artery
maxillary is a branch of what artery
external carotid
