At an atmospheric pressure of 870 mm hg with 21 percent oxygen, the partial pressure of oxygen is ) 219 mm hgb) 127 mm hgc) 151 mm hgd) 182 mm hge) 100 mm hg

Ifound this on google “the middle ear contains three tiny bones known as the ossicles: malleus, incus, and stapes. the ossicles were given their latin names for their distinctive shapes; they are also referred to as the hammer, anvil, and stirrup, respectively.” i hope this you for what your looking for