MICROANATOMY

Detailed explanation-1: -Subcutaneous means beneath, or under, all the layers of the skin. For example, a subcutaneous cyst is under the skin.

Detailed explanation-2: -Sites for subcutaneous injections include the outer lateral aspect of the upper arm, the abdomen (from below the costal margin to the iliac crest and more than two inches from the umbilicus), the anterior upper thighs, the upper back, and the upper ventral gluteal area.

Detailed explanation-3: -A subcutaneous injection or shot is one into the fatty tissues just beneath the skin. These injections are shallower than those injected into muscle tissues. Providers often use subcutaneous injections for medications that must be absorbed into the bloodstream slowly and steadily, such as insulin.