If assisting in a prehospital delivery while off-duty, which of the following would be the BEST choice for tying or clamping the umbilical cord?

A/an _______ is an intact female dog

Fill in the blank(s) with correct word

All of the following are examples of procedures that can be performed without a grid on modern DR units, except:

A. Facial bones B. Lumbar spines C. Shoulders D. Knees