The femoral nerve emerges lateral to psoas major, and descends to pass beneath the inguinal ligament at approximately its mid-point. It passes through the femoral triangle lateral to the femoral artery and vein.
The femoral nerve emerges lateral to psoas major, and descends to pass beneath the inguinal ligament at approximately its mid-point. It passes through the femoral triangle lateral to the femoral artery and vein. You can use the mnemonic NAVY to remember the content order of the femoral triangle, from lateral to medial:
Motor Role. The deep branch of the femoral nerve then descends to supply the sartorius (the tailor’s muscle). Once it passes through the femoral canal (as the most lateral structure of the neurovascular bundle), it supplies the pectineus, a small muscle in the medial compartment of the thigh. Finally, the nerve supplies the four heads...
The deep branch of the femoral nerve then descends to supply the sartorius (the tailor’s muscle). Once it passes through the femoral canal (as the most lateral structure of the neurovascular bundle), it supplies the pectineus, a small muscle in the medial compartment of the thigh.
the lumbar plexusThe femoral nerve ranks as the largest nerve that arises from the lumbar plexus. It is created from lumbar spinal nerves L2, L3, and L4. Its principal function is to supply motor and sensory innervation to the anterior compartment of the thigh.
The great auricular nerveThe great auricular nerve is from the cervical plexus as a superficial branch, originating from the second and third cervical vertebral levels (C2–C3). The great auricular nerve exits the cervical plexus at the posterior aspect of the sternocleidomastoid muscle at a point called Erb's point.
lumbar plexusBoth these nerves arise from the lumbar plexus, which lies up here within the thickness of the psoas major muscle. The femoral nerve emerges lateral to psoas major, the obturator nerve medial to it.
lumbar plexusThe anterior femoral cutaneous nerves are also called the anterior cutaneous branches of femoral nerve. They arise from the lumbar plexus via the femoral nerve which is formed by the posterior divisions of the anterior rami of spinal nerves L2-L4.
The phrenic nerve, which arises from the cervical plexus, supplies both motor and sensory fibers to the diaphragm, the main breathing muscle.
-The thoracodorsal nerve arises from the posterior cord of the brachial plexus.
The sacral plexus is derived from the anterior rami of spinal nerves L4, L5, S1, S2, S3, and S4. Each of these anterior rami gives rise to anterior and posterior branches. The anterior branches supply flexor muscles of the lower limb, and posterior branches supply the extensor and abductor muscles.
Abstract. Lumbar plexus is formed within the psoas major muscle from the ventral rami of the first four lumbar nerves and a contribution of the last thoracic nerve (T12). It forms the iliohypogastric, ilioinguinal, genitofemoral, lateral cutaneous nerve of thigh, obturator and femoral nerves.
The lumbosacral plexus is formed by the anterior rami (i.e., branches) of spinal nerves L4 to L5 and S1 to S4. It is located on the posterolateral wall of the lesser pelvis, adjacent to the lumbar spine. The lumbosacral plexus then embeds itself into the psoas major muscle and later emerges in the pelvis.
The sciatic nerve is a terminal branch of the sacral plexus. It is formed from both anterior and posterior divisions of the anterior (ventral) rami of spinal nerves L4 through S3. The anterior branches of these five spinal nerves meet and converge in the posterior pelvic region to form a single large nerve.
The majority of cutaneous and motor innervation of the shoulder and upper limb arise from the brachial plexus, which originates from the C5 to T1 ventral rami.
The femoral nerve (L2 to L4) emerges at the lower border between the psoas and iliacus muscles, and passes beneath the inguinal ligament. The femoral nerve provides motor branches to knee extensors (quadriceps muscles) and sensation to the anterior thigh, femur, knee joint, and medial leg.
Femoral nerve (Nervus femoralis) The femoral nerve is a mixed nerve of the lower limb that innervates the muscles and skin of the hip and thigh . The femoral nerve originates from the lumbar plexus, arising from the ventral rami of L2-L4 spinal nerves .
The nerve to pectineus branches off the medial aspect of the femoral nerve close to the inguinal ligament to innervate the pectineus , a small muscle in the medial compartment of the thigh.
The femoral triangle is formed by the lateral border of adductor longus, the medial border of sartorius and the inguinal ligament (with pectineus and illiopsoas forming the floor). It contains, from lateral to medial, the femoral nerve, artery and vein.
Sensory branches. The anterior division of the femoral nerve gives rise to the medial femoral cutaneous nerve of thigh and intermediate femoral cutaneous nerves the thigh. These nerves supply sensation to the skin over the anterior and medial region of the thigh.
The nerve to sartorius branches from the anterior division of the femoral nerve to supply the sartorius muscle (the tailor’s muscle). The muscular branches arise from the posterior division and supply the four heads of the quadriceps femoris (vastus medialis, vastus lateralis, vastus intermedius and rectus femoris).
It descends into the adductor canal along with the femoral vessels. However, the nerve does not enter the adductor hiatus. Instead, it emerges on the medial side of the knee to supply sensation to the skin over the region of the greater saphenous vein in the gaiter region.
The posterior division supplies the quadriceps femoris musle. The femoral nerve terminates as the saphenous nerve in the gaiter region of the leg.