The deep side of the upper part of the sternocleidomastoid muscle

skin branch

Muscle branch

At the midpoint of the posterior edge of the sternocleidomastoid muscle

From the anterior rami of the 5th to 8th cervical nerves and the anterior rami of the 1st thoracic vertebra

Go out from the scalene muscle space and enter the axilla behind the clavicle.

supraclavicular branch

subclavian branch

Behind the midpoint of the clavicle

The small part of the anterior branch of the fourth lumbar nerve is combined with the anterior branch of the fifth lumbar nerve to form the lumbosacral trunk and the tail of the sacral nerve.

Posterior wall of small pelvis anterior to piriformis muscle

brachial nerve

hypobrachial nerve

pudendal nerve

Posterior femoral cutaneous nerve

sciatic nerve

It consists of a small part of the anterior rami of the 12th thoracic nerve, the anterior rami of the 1st to 3rd lumbar nerves, and most of the anterior rami of the 4th lumbar nerve.

Between psoas major and quadratus lumborum

iliohypogastric nerve

ilioinguinal nerve

genitofemoral nerve

lateral femoral cutaneous nerve

femoral nerve

obturator nerve