Scalp

Question 1

Layers of Scalp

Answer 1

1. Skin
2. Close subcutaneous tissue
3. Aponeurosis (Galea Aponeurotica)
4. Loose subaponeurotic tissue
5. Pericranium

Question 2

Blood Supply of Scalp

Answer 2

1. Internal carotid artery –> Ophthalmic artery –> Supratrochlear and Supraorbital arteries
2. External carotid artery –> Occipital, Posterior Auricular, and Superficial Temporal arteries

Question 3

Sensory Innervation of Scalp

Answer 3

1. Greater Occipital nerve (posterior)
2. Supratrochlear and Supraorbital nerves - V1 (anterior)
3. Zygomaticotemporal nerve - V2 (anterior)
4. Auriculotemporal nerve - V3 (anterior)

Question 4

Epicranius

Answer 4

1. Gala Aponeurotica
2. Temporoparietalis
3. Occipitofrontalis
4. Superior Auricular

Question 5

What innervates the Epicranius (muscles and aponeurosis)?

Answer 5

Facial Nerve

Question 6

Boundaries of Scalp

Answer 6

1. Superior nuchal lines to supraorbital margins (anterior-posterior)
2. Zygomatic arches (laterally)