Subcutaneous injection is administered into tissue between which two anatomical layers?

Subcutaneous injection is administered into tissue between which two anatomical layers?

• A. In the bloodstream
• B. In the joint
• C. Between the epidermis and the muscle
• D. In the brain

Answer: (C)

Subcutaneous injections place medicine into the tissue just under the skin. This subcutaneous layer lies between the outer skin surface and the underlying muscle, so the injection goes into tissue between the epidermis (the outer skin) and the muscle. This area is rich in fat and connective tissue, which slows absorption compared with muscle, making it useful for drugs that need a gentler, more gradual uptake. If a drug were intended for the bloodstream, it would be intravenous; for a joint, intra-articular; and for the brain, intracranial.

Subcutaneous injections place medicine into the tissue just under the skin. This subcutaneous layer lies between the outer skin surface and the underlying muscle, so the injection goes into tissue between the epidermis (the outer skin) and the muscle. This area is rich in fat and connective tissue, which slows absorption compared with muscle, making it useful for drugs that need a gentler, more gradual uptake. If a drug were intended for the bloodstream, it would be intravenous; for a joint, intra-articular; and for the brain, intracranial.