Home > Skeletal System > Bones of the Chest and Upper Back > Xiphoid Process of Sternum. The xiphoid process is the smallest and most inferior region of the sternum, or breastbone. At birth, it is a thin, roughly triangular region of cartilage that slowly ossifies into a bone and fuses with the body of the sternum.
Some of the most prevalent diseases known to cause deafness include meningitis, Meniere'mÃ©niÃ¨re S, Disease Alport, syndrome, rubella and. Mumps there are two main causes of, deafness these are congenital and. acquired
Acquired Deafness. Dogs with acquired deafness are born with normal hearing capacity, but hearing is lost due to such factors as middle and inner ear infections, head traumas and injuries, health problems such as distemper, hypothyroidism, tumors of the middle ear, and sometimes brain tumors.