Every state and the District of Columbia has a board of nursing with a mission of protecting the public from harm. Governance of the practice of nursing includes: Establishing requirements for initial licensure and retaining: basic education, continuing education and/or competency. Interpreting scope of practice parameters, defined by state statute (nurse practice act)
  Avascular tissue is that which does not contain blood vessels or lymphatics. Examples include: The epithelial layer of the skin, cartilage, and the cornea and lens of â¦ the eye. There are some types of connective tissue that are composed of elastic fibers that are avascular, too.
Avascular necrosis can occur when the blood supply to the ball of the hip (the femoral head) is lost. This causes the bone tissue to die and the femoral head to collapse, which results in arthritis.