Blood typing may be used to: 1  Ensure compatibility between the blood type of a person who requires a transfusion of blood or blood components and the ABO and Rh type of the unit of blood that will be transfused. 2  Determine compatibility between a pregnant woman and her developing baby (fetus).
The pelvis is comprised of four bones Two innominate bones: Each of these bones is made up of three parts: the ilium, the ischium and the pubis. The iliumis the large flared out part. Its concave inner surface is the iliac fossa. The curved upper border is the iliac crest.When you place your hand on your hip it rests on the iliac crest. At the front of the iliac crest there is a bony prominence known as the anterior superior iliac spine and below it is the anterior inferior iliac spine.he pelvis is comprised of four bones Two innominate bones: Each of these bones is made up of three parts: the ilium, the ischium and the pubis. The iliumis the large flared out part. Its concave inner surface is the iliac fossa. The curved upper border is the iliac crest.
Contributing a little more than two-fifths of the structure is the ischium, which provides lower and side boundaries to the acetabulum. The ilium forms the upper boundary, providing a little less than two-fifths of the structure of the acetabulum. The rest is formed by the pubis, near the midline.