This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'Which lower limb artery is difficult to palpate \nSelect and explain. \nA. Popliteal artery, B. Anterior tibial artery, C. Posterior tibial artery, D. Dorsalis pedis artery', 'role': 'user'}, {'content': 'Answer: A \nExplanation: POPLITEAL ARTERY :-\nContinuation of femoral artery.\nBegins at adductor hiatus. Runs downwards and laterally to reach lower border of popliteus.\nTerminates by dividing into anterior and posterior tibial arteries.\nRelations:-\n1. Anteriorly- popliteal surface of femur, back of knee joint, fascia covering popliteus.\n2. Posterior - tibial nerve.\n3. Lateral- biceps femoris, plantaris, lateral head of gastrocnemius and lateral condyle of femur.\n4. Medial-semimembranosus, medial condyle of femur.\nBranches:-\n1. Muscular- adductor Magnus, hamstrings, gastrocnemius, soleus, plantaris.\n2. Cutaneous\n3. Genicular- superior, middle and inferior.\n\xa0 Middle -pierces oblique popliteal ligament. Supplies cruciate ligament and synovial membrane of knee joint.\nBP of lower limb measured from popliteal artery.\nIn coarctation of aorta, popliteal pressure < brachial pressure.\nPopliteal artery is fixed to capsule of knee joint by a fibrous band present just above the femoral condyles. This may be a source of continuous traction or stretching in the artery, causing primary thrombosis of artery.\nMore prone to aneurysm.\nDorsalis pedis- can be easily at proximal end of first intermetatarsal space. i.e .between the tendons of EHL and first tendon of EDL.\nAnterior tibial artery- palpable at midway between two malleolus\xa0\nPosterior tibial artery- pulsation felt at 2 cm behind and below medial malleolus.', 'role': 'assistant'}]