It is called the Nape
the neck region is called the cervis.
Front part of neck is called trachea.
the nape
collar bone
Cervical
Those bony lumps that you can feel at the back of the neck are vertebrae, which are part of the spine.
the back of ur neck
The scruff.... I picked him up by the 'scruff' of the neck
it is called the scruff or nape
your spine
It may be suffering from polioencephalomalacia, as in a thiamine deficiency. The neck craning back is also called star gazing.
Scruff
Moving the head back is called extension of the head
They are called vertebrae. Specifically in the neck they are called cervical vertebrae, the lower back are called lumbar vertebrae and the mid back around the ribcage are called thoracic vertebrae.
Back of the neck
This is called the Withers
I think the back of the neck is called the Nape. Please correct if wrong. I think you are looking for Scruff if you are doing the Times crossword today