Ilium, ischium and pubis are parts of coxal bones of pelvic girdle. Thiamine is vitamin and thymine, cytosine and uracil are pyrimidines. Malleus, incus and stapes are ear ossicles. Cochlea is not ear ossicles but it is the part of the inner ear involved in hearing. Actin and myosin are muscle proteins while rhodopsin is protein present in rods of eye.