Identify the structure indicated by the black leader line in the image below.
Fill in the blank
The Correct Answer is {"dropdown-group-1":"B"}
Correct answer: left atrial appendage
The black leader line points to the left auricle, the ear-shaped muscular appendage of the left atrium that increases atrial volume.
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Related Questions
Correct Answer is D
Explanation
A. It carries oxygen-poor blood to the tissues: That’s the systemic circuit's function (to deliver oxygen to tissues via arterial blood), so incorrect.
B. It carries oxygen-poor blood to the heart: Venous return from tissues brings oxygen-poor blood back to the heart, but the pulmonary circuit specifically moves blood from the heart to the lungs -so this is misleading/incorrect.
C. It carries oxygen-poor blood from the tissues: The systemic veins do that; the pulmonary circuit carries blood from the heart to the lungs, not directly from tissues.
D. It carries oxygen-poor blood to the lungs: Pulmonary circuit transports deoxygenated blood from the right ventricle to the lungs for oxygenation.
Correct Answer is D
Explanation
A. pleural: the pleura lines the thoracic cavity and lungs, not the greater omentum.
B. pericardial: the pericardium surrounds the heart, not the abdominal organs.
C. hiatal: “hiatal” refers to the esophageal hiatus (an opening) and is not the membrane composing the omentum.
D. peritoneal: the greater omentum is a large fold of peritoneum (a double-layered peritoneal membrane) that hangs from the stomach.
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