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  2. Composition of the human body - Wikipedia

    en.wikipedia.org/wiki/Composition_of_the_human_body

    Elements. The main elements that comprise the human body (including water) can be summarized as CHNOPS. About 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium.

  3. Collagen - Wikipedia

    en.wikipedia.org/wiki/Collagen

    Collagen (/ ˈkɒlədʒən /) is the main structural protein in the extracellular matrix of a body's various connective tissues. As the main component of connective tissue, it is the most abundant protein in mammals. [1] 25% to 35% of a mammalian body's protein content is collagen.

  4. Autotransplantation - Wikipedia

    en.wikipedia.org/wiki/Autotransplantation

    Autotransplantation is the transplantation of organs, tissues, or even particular proteins from one part of the body to another in the same person (auto- meaning "self" in Greek [1]). The autologous tissue (also called autogenous, autogeneic, or autogenic tissue) transplanted by such a procedure is called an autograft or autotransplant.

  5. Human body - Wikipedia

    en.wikipedia.org/wiki/Human_body

    The human body is composed of elements including hydrogen, oxygen, carbon, calcium and phosphorus. These elements reside in trillions of cells and non-cellular components of the body. The adult male body is about 60% total body water content of some 42 litres (9.2 imp gal; 11 US gal).

  6. Human skin - Wikipedia

    en.wikipedia.org/wiki/Human_skin

    The human skin is the outer covering of the body and is the largest organ of the integumentary system. The skin has up to seven layers of ectodermal tissue guarding muscles, bones, ligaments and internal organs. Human skin is similar to most of the other mammals ' skin, and it is very similar to pig skin. Though nearly all human skin is covered ...

  7. Tissue (biology) - Wikipedia

    en.wikipedia.org/wiki/Tissue_(biology)

    t. e. In biology, tissue is an assembly of similar cells and their extracellular matrix from the same embryonic origin that together carry out a specific function. [1][2] Tissues occupy a biological organizational level between cells and a complete organ.

  8. Cartilage - Wikipedia

    en.wikipedia.org/wiki/Cartilage

    Cartilage is a resilient and smooth type of connective tissue. It is a semi-transparent and non-porous type of tissue. It is usually covered by a tough and fibrous membrane called perichondrium. In tetrapods, it covers and protects the ends of long bones at the joints as articular cartilage, [1] and is a structural component of many body parts ...

  9. Autologous stem-cell transplantation - Wikipedia

    en.wikipedia.org/wiki/Autologous_stem-cell...

    Autologous stem-cell transplantation (also called autogenous, autogenic, or autogenic stem-cell transplantation and abbreviated auto-SCT) is the autologous transplantation of stem cells [1][2][3][4] —that is, transplantation in which stem cells (undifferentiated cells from which other cell types develop) are removed from a person, stored, and ...