A retired teacher, aged 65, suffers from a massive heart attack while playing golf and dies in the intensive care unit. Autopsy reveals the cause of death as severely diminished blood flow in the coronary arteries. This most likely resulted from embolization of an atherosclerotic plaque at the origin of which of the following vascular structures?
A sexually active teenager presents with an infection within the ischiorectal fossa. Which of the following structures is most likely injured?
A radiologist examines posterior-anterior chest radiographs of a 28-year-old victim of a car accident. Which of the following structures forms the right border of the cardiovascular silhouette?
A radiologist interprets a lymphangiogram for a 30-year-old patient with metastatic carcinoma. Upper lumbar nodes most likely receive lymph from which of the following structures?
A physical fitness trainer for a young Hollywood movie star explains the reasons for 50 stomach crunches a day. The young star, a medical student before hitting it big, reaffirms to his trainer that the lateral margin of the rectus abdominis, the muscle responsible for a washboard stomach, defines which of the following structures?
A radiograph of a 33-year-old woman reveals a perforation in the posterior wall of the stomach in which the gastric contents have spilled into the lesser sac. The general surgeon has opened the lienogastric (gastrosplenic) ligament to reach the lesser sac and notes erosion of the ulcer into an artery. Which of the following vessels is most likely involved?
A patient presents with thumb pain during repeated movements (claudication). The physician conducts an Allen test and discovers an inadequate radial artery. This radial artery stenosis could lead to which of the following conditions?
A patient with hereditary blood clotting problems presents with pain in the back of her knee. An arteriogram reveals a blood clot in the popliteal artery at its proximal end. Which of the following arteries will allow blood to reach the foot?
A pediatric surgeon has resected a structure that is a fibrous remnant of an embryonic or fetal artery in a 6-year-old child. Which of the following structures is most likely to be divided?
A pediatric surgeon is resecting a possible malignant mass from the liver of a premature infant with cerebral palsy. The surgeon divides the round ligament of the liver during surgery. A fibrous remnant of which of the following fetal vessels is severed?