Week 1: Station 2 - Scalp Flashcards
Where does the scalp extend to anteriorly?
Supraorbital margin
Where does the scalp extend to posteriorly?
- Superior nuchal lines
Where does the scalp extend to laterally?
Zygomatic arch
Which bone is the superior nuchal line a part of?
Occipital
What are the 5 layers of the scalp? SCALP mnemonic
- Skin
- Cutaneous tissue (dense connective tissue)
- Aponeurosis
- Loose connective tissue
- Periosteum (pericranium)
What is the action of contraction of the frontal belly of the occipitofrontalis?
Raising eyebrows
What is the anterior source of cutaneous innervation of the scalp?
CrN V
What supplies the posterior half of the scalp with cutaneous innervation?
- Anterior and posterior rami of cervical spinal nerves
C2 and C3
Does C1 have any dermatomal innervation?
Almost none
How does herpes zoster present?
The virus travels down nerves in a dermatomal fashion and presents as skin lesions in the dermatome
In which layer of the scalp do blood vessels that supply it run?
Cutaneous tissue
Why do wounds to the scalp bleed profusely?
- No vasoconstriction can occur due to the dense connective tissue retracting
What are the branches of the external carotid artery? Some American Ladies Find Our Pyramids So Magnificent
S - superior thyroid
A - ascending pharyngeal
L - lingual
F - facial
O - occipital
P - posterior auricular
S - maxillary
M - superficial temporal
Try learn a few of these
What veins pass through diploe?
Emissary veins
