2. The shoulder blade which runs up from the point of the shoulder to the withers (top of the back line).
3. The nuchal ligament (ligamentum nuchae) which runs from the withers to the back of the neck along the back line.
The triangular region between the structures listed above is what is available for intramuscular injections. Be sure to
familiarize yourself with this region on live cattle by pressing on the neck region—you can feel these structures through the
skin fairly easily. If you are at all unsure, have your veterinarian go over these areas with you. The amount of material
injected should be limited to 10 ml in any one spot and again, spread these sites out by about 4 inches. One to 1 ½ inch
needles work well for IM injections and usually 16 or 18 gauge will be preferable