Monocytes are usually identified in stained smears by their large kidney shaped or notched nucleus. These change into macrophages after entering into the tissue spaces, and in endothelium can transform into foam cells.
As a quick overview, the muscles that attach to the first rib are: subclavius, anterior scalene, serratus anterior, middle scalene, and levator costae.The job of these muscles is either to fix the rib in place or draw it upwards.lso present are the superior intercostal artery and vein. As a quick overview, the muscles that attach to the first rib are: subclavius, anterior scalene, serratus anterior, middle scalene, and levator costae. The job of these muscles is either to fix the rib in place or draw it upwards.
In this phase, the muscles probably act from their insertions; the lower ribs are fixed by contraction of the abdominal muscles, and the intercostal muscles of the lower spaces draw down the ribs and reduce the thoracic volume.f the 12 pairs of ribs, pairs 1â7 are connected by their costal cartilages to the sternum (true ribs), the cartilages of ribs 8, 9 and 10 articulate with each other (false ribs), and pairs 11 and 12 are free anteriorly, capped by costal cartilage (floating ribs).