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  2. Human body - Wikipedia

    en.wikipedia.org/wiki/Human_body

    The human body is the entire structure of a human being. It is composed of many different types of cells that together create tissues and subsequently organs and then organ systems. They ensure homeostasis and the viability of the human body. It consists of a head, hair, neck, torso (which includes the thorax and abdomen), arms, hands, legs ...

  3. Tissue (biology) - Wikipedia

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

    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.

  4. Composition of the human body - Wikipedia

    en.wikipedia.org/wiki/Composition_of_the_human_body

    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.

  5. Regeneration in humans - Wikipedia

    en.wikipedia.org/wiki/Regeneration_in_humans

    Regeneration in humans is the regrowth of lost tissues or organs in response to injury. This is in contrast to wound healing, or partial regeneration, which involves closing up the injury site with some gradation of scar tissue. Some tissues such as skin, the vas deferens, and large organs including the liver can regrow quite readily, while ...

  6. Soft tissue - Wikipedia

    en.wikipedia.org/wiki/Soft_tissue

    Soft tissue. Micrograph of a tendon. Hematoxylin and eosin stain. Soft tissue connects and surrounds or supports internal organs and bones, and includes muscle, tendons, ligaments, fat, fibrous tissue, lymph and blood vessels, fasciae, and synovial membranes. [1] [2] Soft tissue is tissue in the body that is not hardened by the processes of ...

  7. Adipose tissue - Wikipedia

    en.wikipedia.org/wiki/Adipose_tissue

    Adipose tissue (also known as body fat or simply fat) is a loose connective tissue composed mostly of adipocytes. [1] [2] It also contains the stromal vascular fraction ( SVF ) of cells including preadipocytes , fibroblasts , vascular endothelial cells and a variety of immune cells such as adipose tissue macrophages .

  8. List of organs of the human body - Wikipedia

    en.wikipedia.org/wiki/List_of_organs_of_the...

    t. e. This article contains a list of organs of the human body. It is widely believed that there are 79 organs (this number goes up if you count each bone and muscle as an organ on their own, which is becoming more common practice to do [1] [2] ); however, there is no universal standard definition of what constitutes an organ, and some tissue ...

  9. List of systems of the human body - Wikipedia

    en.wikipedia.org/wiki/List_of_systems_of_the...

    cardiovascular system. endocrine system. (missing exocrine system) muscular system. Clockwise from top left: lymphatic system. respiratory system. urinary system. female reproductive system. male reproductive system.

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