The midclavicular line is the imaginary line that gets drawn from the midpoint of the left clavicle, or the collarbone, straight down, and you can find where it intersects with the fifth intercostal space.
Cross your arms over your chest, so that the fingers of your left hand would be under your right clavicle and the fingers of your right hand would be under the left one.
We're primates, and only amongst primates do humans and our ancestors have this very characteristic S-shape, and at that time I was probably one of the world's only experts on hominin clavicles.
我们是灵长类动物,只有在灵长类动物中,人类和我们的祖先才会有这种非常有特点的 S 型,当时我可能是世界唯一研究人科动物的专家之一。
These symptoms also occur in thoracic outlet syndrome where the same nerves as well as the subclavian artery and vein are compressed as they travel through the narrow space between the first rib and the clavicle.
B is for bones, start by looking at both clavicles and all twelve pairs of ribs one at a time to make sure that there are no fractures, deformities, or missing bones.