The Scalp BY: DR. Yahya h. Alfarra. The Scalp Definition layers Muscle of scalp nerve supply of scalp Arterial supply of scalp Veins of scalp.

The Scalp

BY:

DR. Yahya h. Alfarra

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.

1-skin

2 -conective tissue

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