Final answer:
Sterile coolants/irrigants are important for surgical procedures involving hard tissue or bone, and antiseptics are used for microbial control on living tissues. Items needing sterilization are those that would penetrate the body's sterile regions. Bone is dense, hard connective tissue vital for blood cell production because of the red marrow.
Step-by-step explanation:
Sterile coolants/irrigants should be used for surgical procedures involving hard tissue or bone. In medical contexts, these solutions help to prevent infection and protect the patient’s health by maintaining a sterile environment. For microbial control on tissues to prevent infection, the suitable option is B. antiseptic, as it is specifically designed for reducing or stopping the growth of microorganisms on living tissues.
Regarding medical items, those that require sterilization are typically the ones that penetrate sterile tissues, come into contact with bloodstreams, or enter other normally sterile areas of the body. For a dehydrated patient needing fluids intravenously, saline at a concentration that is isotonic with body fluids is administered.
Bone tissue is described as dense, hard connective tissue. It is a living tissue that makes up the skeletal system and plays a crucial role in the production of blood cells with its red marrow content. Without red marrow, bones would not be able to produce blood cells.