Hello People ! I hope this amazing slides of our scalp's nerve & blood supply will help u fetch more marks in your exam. These are easily understandable slides with colourful images for medical students.Hope this will makes your understanding of Gross anatomy much more clear !

1. SCALP : NERVE SUPPLY & BLOOD
SUPPLY.
Presented by : Poulani Roy.
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2. NERVE SUPPLY OF SCALP
● The scalp and
temple are supplied
by ten nerves on
each side.
● Out of these five
nerves(4 sensory
and 1 motor) enter
the scalp in front of
the auricle.
● The remaining five
nerves (4 sensory
and 1 motor) enter
the scalp behind the
auricle. 2

3. NERVE SUPPLY OF SCALP
• In front of auricle
– Supratrochlear n.
– Supraorbital n.
– Zygomaticotemporal n.
– Temporal branch of facial n.
– Auriculotemporal n.
• Behind auricle
– Greater auricular n
– Post. Auricular branch of facial n
– Lesser occipital n.
– Greater occipital n.
– Third occipital n. 3

4. NERVE SUPPLY OF SCALP
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5. NERVE SUPPLY OF SCALP
The innervation of scalp can be remembered using the
mnemonic "Z-GLASS" for
Z =Zygomaticotemporal nerve,
G=Greater occipital nerve,
L=Lesser occipital nerve,
A=Auriculotemporal nerve,
S=Supratrochlear nerve, and
S=Supraorbital nerve. 5

6. NERVE SUPPLY OF SCALP
The scalp receives cutaneous innervation from branches of the trigeminal nerve or the cervical nerve
roots.
Trigeminal Nerve
● Supratrochlear nerve – branch of the ophthalmic nerve which supplies the
anteromedial forehead.
● Supraorbital nerve – branch of the ophthalmic nerve which supplies a large
portion of the scalp between the anterolateral forehead and the vertex.
● Zygomaticotemporal nerve – branch of the maxillary nerve, this supplies the
temple.
● Auriculotemporal nerve – branch of the mandibular nerve which supplies skin
anterior superior to the auricle.
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7. NERVE SUPPLY OF SCALP
Cervical Nerves
● Lesser occipital nerve – derived from the anterior ramus (division) of C2
and supplies the skin posterior to the ear
● Greater occipital nerve – derived from the posterior ramus (division) of
C2 and supplies the skin of the occipital region.
● Great auricular nerve – derived from the anterior rami of C2 and C3 and
supplies the skin posterior to the ear and over the angle of the mandible.
● Third occipital nerve – derived from the posterior ramus of C3 and
supplies the skin of the inferior occipital region.
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8. BLOOD SUPPLY OF SCALP
• Arteries
– Supratrochlear
– Supraorbital
– Superficial temporal
– Posterior auricular artery
– Occipital artery
• Veins-follows the artery
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9. ARTERIAL SUPPLY OF SCALP
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10. BLOOD SUPPLY OF SCALP
Arteries supplying the scalp are branches of either the
external carotid artery or the ophthalmic artery, which is a
branch of the internal carotid artery.
Branches from the ophthalmic artery ( internal carotid )
• The supratrochlear and supraorbital arteries supply the
anterior and superior aspects of the scalp. They branch
from the ophthalmic artery while it is in the orbit, continue
through the orbit, and exit onto the forehead in association
with the supratrochlear and supraorbital nerves. Like the
nerves, the arteries ascend across the forehead to supply
the scalp as far posteriorly as the vertex of the head.
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11. BLOOD SUPPLY OF SCALP
Branches from the external carotid artery
Three branches of the external carotid artery supply the largest
part of the scalp- the superficial temporal, posterior auricular, and
occipital arteries supply the lateral and posterior aspects of the
scalp
• the posterior auricular artery : leaves the posterior aspect of the
external carotid artery , supply an area of the scalp posterior to the
ear.
• occipital artery, which ascends in a posterior direction, supply a
large part of the posterior aspect of the scalp.
• The superficial temporal artery, a terminal branch of the external
carotid artery that passes superiorly, just anterior to the ear,
divides into anterior and posterior branches, and supplies almost
the entire lateral aspect of the scalp.
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12. THANK YOU
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