the scalp by: dr. yahya h. alfarra. the scalp definition layers muscle of scalp nerve supply of...
Post on 04-Jan-2016
291 Views
Preview:
TRANSCRIPT
The Scalp
• Definition• layers• Muscle of scalp• nerve supply of scalp• Arterial supply of scalp• Veins of scalp
The scalp فروه الرأس
• Definision: the tissue covering the skull which is formed of multiple layers.
Extention:• eye brows (ant),• highest nuchal line(post) • temporal lines(laterally). Note: To assist one in
memorizing the names of the five layers of the scalp, use each letter of the word SCALP to denote the layer of the scalp.
Layers
1- Skin 2- Connective tissue 3- Aponeurosis Note: Epicranial aponeurosis=occipitofrontalis Muscle+ the
galea aponeurotica .4- Loose connective tissue 5- Periosteum
Note:- the superficial 3 layers are firmly united to each other and move
as one layer.
3 -Aponeurosis,(epicranial)
4-Loose connective tissue
5-Periosteum
Muscles of the scalp
• Occipitofrontalis muscle:
formed of 4 bellies
2 occipital bellies (behind),
2 frontal bellies (infront) and
the galea aponeurotica . between the frontal & occipital bellies.
**2 frontal bellies: lies anteriorly origin: from epicranial
aponeurosis Insertion: into skin of forehead
**2 occipital bellies: lies posteriorly
origin: from highest nuchal lines
insertion: into epicranial aponeurosis
nerve supply:
facial nerve
(temporal & post. Auricular branches)
Action: elevation of the eyebrows (surprise).
• 5 Nerves in front of auricle : 4 sensory + 1 motor
• 5 Nerves behind of auricle : 4 sensory + 1 motor
Nerves of the scalp
• 5 artries enter the scalp on each side:
3 infront of auricle &
2 behind the auricle
Arterial supply of the scalp
• Supratrochlear and supraorbital arteries (from ophthalmic arteries )• Superficial temporal artery
(terminal branch of ECA) • Posterior auricualr artery (ECA)• Occipitral artery (ECA)
• Supratrochlear + supraorbital viens
facial vien
* Superficial temporal + maxillary vien
retromandibualr vien
* Post. Auricualr vien + post. Division of retromandibualr vien external jugualr vien
*The Occipital vien.
Viens of the scalp
Thank you very much
textbook
top related