Quiz 4: The Abdomen, Pelvis, and Perineum
C Explanation: Abdomen. The abdomen, including the pelvis, is a large body cavity containing the major portion of the digestive tract and the viscera of the genitourinary system.
D Explanation: Os coxae. The os coxae are originally formed from three separate bones, the ilium, ischium, and pubis, which fuse as one complete bone by about the age of 16 years.
B Explanation: Superficial. The superficial fascia of the abdominal wall is usually divisible into two layers, Camper's fascia and Scarpa's fascia.