The correct answer is B ✅
You should know the boundaries of the femoral triangle: the inguinal ligament above, the medial border of the sartorius laterally, and the medial border of the adductor longus on the inner aspect of the thigh.
(A, C, and D) The gracilis muscle runs roughly parallel to the adductor longus but is not usually considered part of the triangle.
(C and E) The pectineus muscle is found on the floor of the femoral triangle.
📎Source: USMLE Step 1 Qbook by Kaplan Medical
📷Source: Henry Gray (1918) Anatomy of the Human Body, plate 430
You should know the boundaries of the femoral triangle: the inguinal ligament above, the medial border of the sartorius laterally, and the medial border of the adductor longus on the inner aspect of the thigh.
(A, C, and D) The gracilis muscle runs roughly parallel to the adductor longus but is not usually considered part of the triangle.
(C and E) The pectineus muscle is found on the floor of the femoral triangle.
📎Source: USMLE Step 1 Qbook by Kaplan Medical
📷Source: Henry Gray (1918) Anatomy of the Human Body, plate 430