What is a characteristic of spongy bone that gives it strength without adding weight?

Rationale:
A. To locate the ventral gluteal site, the nurse places the palm over the greater trochanter (the large prominence of the femur) with the index finger pointing toward the anterior superior iliac spine and the middle finger spread along the iliac crest. The injection site is the triangle formed between these landmarks, which is considered safe because it avoids major blood vessels and nerves, including the sciatic nerve.
B. Hyoid and trachea are structures in the neck associated with breathing and swallowing, not landmarks for intramuscular injection.
C. These are used to identify the deltoid injection site in the upper arm, not the ventral gluteal region.
D. The deltoid is a muscle, and the “femoral bone” (femur) is a long bone of the thigh. These are not the correct landmarks for ventral gluteal injections.

Rationale:
A. 750 mL is higher than the normal daily loss through insensible perspiration and would typically only occur with conditions like fever or very hot environments.
B. 250 mL is too low; the body normally loses more than this each day through skin and respiratory evaporation.
C. 650 mL is close but still above the usual average range for a healthy adult at rest.
D. 500 mL is the approximate average fluid lost daily through insensible perspiration (skin and lungs), making this the correct answer.