
I cannot believe that I am making any sort of excuse for Dame Kelly here but...
There are two meanings of the word cervix.
The meaning with which most of us are familiar: “the lower narrow passage of the uterus”.
We routinely refer to the cervix uteri as just the cervix; and only women have these.
The less familiar meaning is etymological: in Latin, cervix means neck.
Nobody really refers to the individual vertebra in their neck as cervix vertebra.
We routinely refer to them as neck vertebra or vertebrae; and both sexes have these.