Functions The ventilation /perfusion ratio is higher at the apex of the lung, meaning more air reaches the apex than blood to carry it. paCO2 is decreased and paO2 increased in this area (similar findings to pulmonary embolism or emphysema, though not pathological). Moderate exercise increases perfusion in the apical lung, hence increasing V/P ratio.

Anatomy Course Travels with its associated artery on the border of the lower duodenum. Drain Drains the pancreas and portions of the duodenum. Interested in taking our award-winning Pocket Anatomy app for a test drive?

Anatomy Course Branch of the common interosseous artery that originates from the ulnar artery. Rests upon the interosseous membrane of the forearm in the anterior compartment. Branches of the artery pierce the interosseous membrane where it then descends with the dorsal interosseous nerve to the wrist. Deep branches anastamose with the branches of the posterior

Anatomy The ligament is part of the proximal tibiofibular joint. It attaches to the anterior surface of the head of the fibula to the anterior surface of the head of the tibia, along the oblique line. Functions To reinforce the proximal tibiofibular joint. Interested in taking our award-winning Pocket Anatomy app for a test drive?

Anatomy Course Branches off the anterior tibial artery immediately after it has crossed the interosseous space. Creates an anastomotic network by connecting arteries on the medial, frontal and lateral aspects of the knee joint. Supply Primarily supplies the knee joint. Interested in taking our award-winning Pocket Anatomy app for a test drive?

Anatomy A thickening of the fibrous membrane of the sacroiliac joint capsule. It extends from the anterior lateral surface of the sacrum to the articulating margin of the ilium. The ligament covers the anterior and inferior surface of the sacroiliac joint. Functions Stabilizes the sacroiliac joint. Interested in taking our award-winning Pocket Anatomy app for

Anatomy Origin: Anterior tubercles of the transverse processes of C3 to C6. Insertion: Scalene tubercle and upper surface of the 1st rib. Key Relations: -Deep to sternocleidomastoid. -The brachial plexus and the subclavian artery pass between the anterior scalene and the middle scalene. -The subclavian vein and phrenic nerve passes anterior to the anterior scalene

Anatomy Course Branch of the pancreaticoduodenal artery which itself originates from the gastroduodenal artery. Anastamoses with branches of the splenic artery. Supply Responsible for supplying the head of the pancreas as well as the anterior aspect of the duodenum. Interested in taking our award-winning Pocket Anatomy app for a test drive?

Anatomy Course Continuation of the popliteal artery when it passes through the interosseous membrane to cross into the anterior leg. It then descends on the anterior side of the interosseous membrane until it reaches the distal end of the tibia and ankle. It then continues into the foot as the dorsalis pedis artery. Supply Supplies

Anatomy Course Follows its counterpart artery until it drains into the popliteal vein. Drain Drains the anterior compartment of the lower limb. Interested in taking our award-winning Pocket Anatomy app for a test drive?