Anatomy 1st/highest lumbar vertebra. Body bigger than T12, smaller than L2-5 (progressively bigger, supporting more weight). No articular facets for ribs on body or transverse process (unlike thoracic), no transverse foramen (unlike cervical). Clinical Articulates above with T12, below with L2. L1-5 very strong spinal segment, exhibits flexion, extension, lateral flexion, rotation. Vignette Fracture commonly

Anatomy Completes the progression, through L4, of change in where transverse process arises, from junction pedicle and lamina, to arising from junction pedicle and body, homologous with rib. Transverse processes are strong. Body is much thicker in front than behind (providing prominence to the lumbo-sacral junction). Superior articular process has a small mamillary process, and

Anatomy Course Branches from the axillary artery, beyond the lateral margin of pectoralis minor. It then travels inferomedially on the thoracic wall, following the pectoralis minor muscle. It terminates here, anastomosing with intercostal vessels, internal thoracic arteries and the subscapular artery. Supply Contributes to the blood supply of the front wall of the axilla, the

Anatomy This is a C-shaped cavity within each cerebral hemisphere lined with ependymal cells. They are part of the series of fluid-filled cavities, which make up the ventricular system. It is connected to the third ventricle via the interventricular foramen of Monro. It divides into a body, which occupies the parietal lobe and anterior, posterior

Anatomy Origin: Spinous processes of T7 to T12 and the thoracolumbar fascia, by which it is attached to the spines of all lumbar and sacral vertebrae. The posterior part of the iliac crest and the lower three to four ribs. Insertion: The fibres converge to form a flattened tendon and attaches to the floor of

Anatomy Course Originates laterally from the dorsal venous arch of the foot. It ascends superficially on the posterior aspect of the leg until it pierces the deep fascia and joins the popliteal vein. Drain The lesser saphenous vein drains the superficial leg and foot. Interested in taking our award-winning Pocket Anatomy app for a test

Anatomy Origin: Maxilla inferior to the infra-orbital foramen. Insertion: Skin at the corner of the mouth. Key Relations: Lies posterior to levator labii superioris, levator labii superioris alaeque nasi and zygomaticus major and minor. Functions Raises corner of the mouth and forms the nasolabial furrow e.g. during sadness.. Supply Nerve Supply: Buccal branch of the

Anatomy Origin: Body of the pubis, tendinous arch of obturator fascia and pelvic surface of ischial spine. Insertion: Coccyx, around the anal canal and the anococcygeal ligament. Key Relations: -Forms posterior part of the levator ani muscle. -Contributes to formation of the pelvic diaphragm in association with coccygeus (for more information see the above layer)

Anatomy Origin: Infra-orbital margin of maxilla. Insertion: Skin of upper lateral half of upper lip. Key Relations: Fibres run inferomedially and merge with orbicularis oris. Functions Raises upper lip and forms the nasolabial furrow. e.g. during sadness.. Supply Nerve Supply: Buccal branch of the facial nerve (CN 7). Blood Supply: Superior labial branch of the

Anatomy Origin: Frontal process of maxilla. Insertion: Alar cartilage of nose and upper lip. Key Relations: Lies medial to levator labii superioris. Functions Raises upper lip and opens the nostrils. Supply Nerve Supply: Buccal branch of the facial nerve (CN 7). Blood Supply: Lateral nasal artery. Interested in taking our award-winning Pocket Anatomy app for