What causes a pulmonary embolism? Blood clots can form for a variety of reasons. Pulmonary embolisms are most often caused by deep vein thrombosis, a condition in which blood clots form in veins deep in the body. The blood clots that most often cause pulmonary embolisms begin in the legs or pelvis.
All ribs are attached posteriorly to the thoracic vertebrae. The neck of the rib is the flattened part that extends laterally from the head. The neck is about 3 cm long, and is placed in front of the transverse process of the lower of the two vertebrae with which the head articulates.
3 types of rib: True, false and floating. Ribcage: Protects your heart and lungs. True, false and floating ribs. Your ribcage is assembled from three types of bone-your sternum, 12 pairs of ribs and 12 thoracic vertebrae.All of your ribs attach to your spine, but only the top seven pairs connect to your sternum.These are known as 'true ribs' and they are connected to your sternum by strips of cartilage.rue, false and floating ribs. Your ribcage is assembled from three types of bone-your sternum, 12 pairs of ribs and 12 thoracic vertebrae. All of your ribs attach to your spine, but only the top seven pairs connect to your sternum.