Anatomy and Cell Biology 3319 Lecture Notes - Lecture 31: Palmaris Longus Muscle, Spinal Canal, Peroneus Longus

• School: Western University
• Department: Anatomy and Cell Biology
• Course: Anatomy and Cell Biology 3319
• Professor: Michele Barbeau

Document Summary

Innervation of the lower limb and muscles of the leg: Lumbar plexus: the lumbar plexus arises from the 1st four lumbar spinal nerves: l1-l4, similar to the brachial plexus, intercommunicate and give rise to branches. Intercommunication and give rise to the nerves to the lower limb. Obturator and the femoral nerve: femoral nerve: under the inguinal ligament and innervates anterior thigh, continues down and provides cutaneous innervation to the leg, obturator nerve: on the medial side of the thigh, for medial compartment. Sciatic nerve is the largest and widest nerve of the body: contained within fibrous covering, tibial nerve and the common peroneal nerve. Lumbar plexus gives rise to femoral and the obturator nerve. Lumbar femoral anterior compartment below the knee superficial innervation. Sacral plexus sciatic nerve (bundle of tibial and pereneal) . Sciatica refers to pain, tingling, or numbness caused by irritation of the nerve roots leading to the sciatic nerve.