Yessuperficialthe skin is superficial to the muscles of the upper arm.
ribs
There's no set number for that, it's all down to how you break them, how overall healthy you are, and what care you can get. People have died from breaking ONE, if that single one punctured a lung, or the skin. Likewise people have survived from having most of the ribs on one side removed as part of surgical treatment of Tuberculosis.
Remember that superficial means closer to the skin and deep makes farther away (the core) from the skin. Therefore, the ribs are closer to the skin, so they are superficial to the lungs, and vice versa.
your ribs and your skin.
Your ribs, and then your skin.
You cannot see any parts of the heart without doing surgery, because the heart is inside the chest cavity and covered by ribs and muscles and skin.
You cannot see any parts of the heart without doing surgery, because the heart is inside the chest cavity and covered by ribs and muscles and skin.
You cannot see any parts of the heart without doing surgery, because the heart is inside the chest cavity and covered by ribs and muscles and skin.
You cannot see any parts of the heart without doing surgery, because the heart is inside the chest cavity and covered by ribs and muscles and skin.
The reason why fish have silver skin is because it helps them to hide from predator. The silver skin refracts light and makes it harder for enemies to see these fish.
You cannot see any parts of the heart without doing surgery, because the heart is inside the chest cavity and covered by ribs and muscles and skin.