Anatomy Origin: Thoracolumbar fascia, iliac crest and the lateral two thirds of inguinal ligament. Insertion: Inferior border of 9th /10th to 12th ribs, aponeurosis to linea alba, pubic crest and pectineal line. Key relations: -Deep to the external obliques. -Muscle fibres run superomedially. Functions -Compresses abdominal cavity and raises intrabdominal pressure e.g raking leaves. -Flexes

Anatomy Course Branches off the anterior trunk of internal iliac artery where it then leaves the pelvis via the greater sciatic foramen below the piriformis muscle. It then enters the perineum via the lesser sciatic foramen. Supply Main supplier of the perineum, specifically the erectile tissues such as the penis and clitoris. Interested in taking

Anatomy Course The main veins draining the perineum. They travel superiorly to join the internal iliac veins. Drain Drain the perineum. Interested in taking our award-winning Pocket Anatomy app for a test drive?

Anatomy A thin, fibrous sheet connecting between the medial border of the radius to the lateral border of the ulna. The collagen fibres pass obliquely downwards from the radius to the ulna. It has a free upper margin inferior to the radial tuberosity and a small hole in its distal third. These holes allow passageway

Anatomy A thin, fibrous sheet attaching between the interosseous crests of the tibia and fibula. The fibres pass downwards in criss-cross directions. Its upper margin does not quite reach the proximal tibiofibular joint, and there is a hole in its distal end. These holes are for passage of vessels in the lower limbs. Functions Connects

Motion The interphalangeal joints are synovial hinge joints. They involve the articulations between the proximal, middle and distal phalanges of the toes. They allow mainly flexion and extension. Stability The fibrous capsules surrounding the joints plays a role in their stability. The joints are reinforced by the following ligaments: -Medial collateral ligament -Lateral collateral ligament

Motion These are uniaxial synovial hinge joints. They involve the articulations between the proximal and middle phalanges, and the articulations between the middle and distal phalanges. The movements possible at these joints are flexion and extension, greater at the proximal joints than at the distal. Stability Each joint has its own fibrous capsule. Stabilizing ligaments

Anatomy There are two anterior cutaneous branches of the femoral nerve: Intermediate femoral cutaneous nerve and Medial femoral cutaneous nerve. Course The femoral nerve is the largest branch of the lumbar plexus and is composed of the second, third and fourth lumbar nerves. Descends between the iliacus muscle and psoas major muscle and runs below

Anatomy Tarsal bone, wedge-shaped, smallest of the cuneiforms, between lateral and medial cuneiforms, articulates forward with 2nd metatarsal, with cuneiforms either side, back with navicular. Vignette Ankle (talocrural) joint; tibia and fibula with tarsal. Subtalar joint; talar with calcaneus. Transverse Talar joint; talonavicular and calcaneocuboid. Tarsometatarsal joints (arthrodial/sliding); 3 cuneiforms and cuboid with metatarsals. Interested

Anatomy Course The terminal branch of superficial peroneal nerve. Travels on the lateral side of the foot where it eventually gives off dorsal digital branches. Supply Supplies the skin of the dorsum digits of the foot with the exception of the lateral aspect of the little toe and in between the great and second toe.