General Anatomy Study Notes

The common peroneal nerve divides into the superficial and deep peroneal nerves, each innervating specific muscles and providing sensory information.

The superficial peroneal nerve innervates the peroneus longus and peroneus brevis muscles: used for foot eversion and plantarflexion

The deep peroneal nerve innervates muscles crucial for dorsiflexion and toe extension.

The femoral nerve arises from spinal nerve roots L2, L3, and L4.

The femoral nerve descends below and outside the psoas major in the iliac fossa, located between the iliacus and psoas major.

The femoral nerve is covered by the iliac fascia in the iliac fossa.

The Peroneal nerve, both superficial and deep, originate from parts of the L4 to S2 spinal regions.

Sensory and motor distribution of the tibial nerve is likely to be discussed in a different anatomical section.

Initiates thigh flexion at the hip and leg flexion at the knee, with associated thigh adduction and external rotation during gait.

L2, L3, and L4 spinal nerves.

Obturator externus, adductor longus, brevis, magnus, pectineus, and gracilis.

Series of alternating stance (support) and swing (non-support) phases of walking.

Begins with heel strike, involves weight-bearing, and ends with toe-off.

Starts with toe-off, includes pre-swing, initial-swing, mid-swing, and terminal-swing.

Muscle inside the thigh, involved in thigh adduction.

Muscle inside the thigh, involved in thigh adduction.

Muscle inside the thigh, involved in thigh adduction.

Muscle connecting the thigh and pelvis, contributing to thigh adduction.

The femoral nerve passes under the inguinal ligament, through the muscular hiatus, over the psoas-iliacus muscle, and outside the femoral artery, separated by the iliopectineal band or arch.

The femoral nerve divides into motor and sensory branches. Motor branches innervate muscles like psoas-iliacus, pectineus, sartorius, and quadriceps femoris. Sensory branches supply the anteromedial thigh, knee, leg, and ankle (except areas supplied by the obturator and genitofemoral nerves).

The main relation of the femoral nerve is with the external iliac and circumflex iliac vessels within the internal iliac fossa.

These branches control muscles' movement. Examples provided include psoas-iliacus, pectineus, sartorius, and quadriceps femoris.

These branches provide sensation or feelings. Areas supplied include the front and inner part of the thigh, knee, lower leg, and ankle.

Iliopsoas, pectineus, sartorius, and quadriceps femoris are innervated by the femoral nerve.

The femoral nerve originates from the lumbar spinal nerves, specifically levels L2 to L4.

A prominent sensory branch of the femoral nerve that supplies the lower leg and foot.

The action of the femoral nerve system is crucial for important movements during walking. Notably, thigh flexion, external thigh rotation, and leg extension are involved, with specific muscles like Sartorius, psoas-iliacus, pectineus, and quadriceps femoris playing key roles.

A fibrous band that separates the abdominal region from the thigh region that the femoral nerve passes beneath.

The obturator nerve travels under and then inwards beside the psoas major muscle, parallel to the lumbosacral trunk.

The obturator nerve exits the pelvis through the subpubic canal, passing through the obturator foramen.

The anterior branch of the obturator nerve provides motor innervation to the adductor longus, adductor brevis, and gracilis muscles. It also provides sensory innervation to the lower third of the inner thigh.

The posterior branch of the obturator nerve provides motor innervation to the obturator externus, adductor brevis, and adductor magnus muscles. It also provides articular branches for the knee.

The sciatic nerve controls hip extension and knee flexion, crucial for walking, running, and jumping.

Group of muscles including the semitendinosus, semimembranosus, biceps femoris, and adductor magnus (rectus portion), innervated by the sciatic nerve.

These muscles are innervated by the tibial portion of the sciatic nerve.

The biceps femoris muscle is innervated by both the tibial and common peroneal portion of the sciatic nerve.

The rectus portion of the adductor magnus is innervated by the tibial portion of the sciatic nerve.

The sciatic nerve has tibial and common peroneal branches that innervate various muscles.

The common peroneal nerve portion supplies signals to certain leg muscles.

The tibial nerve part of the sciatic nerve delivers innervation to a set of muscles, critical for leg movement.

A superficial and deep tendon group connected with Sartorius, Gracilis, and Semitendinosus.

The pata de ganso includes a direct, reflex, and recurrent tendon that form part of the knee complex.