Human body include the heart, lungs and liver. Many organs reside within cavities within the body. These cavities include the abdomen and pleura. The circulatory system comprises the heart and blood vessels (arteries, veins and capillaries). The heart propels the circulation of the blood, which serves as a "transportation system" to transfer oxygen, fuel, nutrients, waste products, immune cells and signalling molecules (i.e., hormones) from one part of the body to another. The blood consists of fluid that carries cells in the circulation, including some that move from tissue to blood vessels and back, as well as the spleen and bone marrow.
Human Tissue Authority and tissue from the living or the deceased for specified health-related purposes and public display. It also covers the removal of such material from the deceased. It lists the purposes for which consent is required (the "scheduled purposes"). The Act notably prohibited private individuals from covertly collecting biological samples, such as hair and fingernails, for DNA analysis, but excluded medical and criminal investigations from the offence. According to the Human Tissue Act, the HTA and its authority are governed by a code of conduct for the handling of human tissue, and the bodies of the deceased, but does not give