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  2. Triad (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Triad_(anatomy)

    In the histology of skeletal muscle, a triad is the structure formed by a T tubule with a sarcoplasmic reticulum (SR) known as the terminal cisterna on either side. [1] Each skeletal muscle fiber has many thousands of triads, visible in muscle fibers that have been sectioned longitudinally. (This property holds because T tubules run ...

  3. List of anatomical variations - Wikipedia

    en.wikipedia.org/wiki/List_of_anatomical_variations

    Accessory soleus muscle; Axillary arch; Epitrochleoanconeus muscle - or anconeous epitrochlearis; Extensor medii proprius muscle; Extensor digitorum brevis manus muscle; Extensor indicis et medii communis muscle

  4. Human body - Wikipedia

    en.wikipedia.org/wiki/Human_body

    Human anatomy is the study of the shape and form of the human body. The human body has four limbs (two arms and two legs), a head and a neck , which connect to the torso . The body's shape is determined by a strong skeleton made of bone and cartilage , surrounded by fat ( adipose tissue ), muscle, connective tissue , organs, and other structures.

  5. Lobules of liver - Wikipedia

    en.wikipedia.org/wiki/Lobules_of_liver

    In histology (microscopic anatomy), the lobules of liver, or hepatic lobules, are small divisions of the liver defined at the microscopic scale. The hepatic lobule is a building block of the liver tissue, consisting of a portal triad, hepatocytes arranged in linear cords between a capillary network, and a central vein.

  6. Institute of Human Anatomy - Wikipedia

    en.wikipedia.org/wiki/Institute_of_Human_Anatomy

    The Institute gained a substantial online following starting in November 2019, when they uploaded their first video to TikTok. [3] A 2019 video, with 1.6 million likes, clarified the location of the human stomach, while a 2021 video illustrating the bodily changes caused by pregnancy accumulated over 8 million views. [4]

  7. Catalytic triad - Wikipedia

    en.wikipedia.org/wiki/Catalytic_triad

    The triad of cytomegalovirus protease [b] uses histidine as both the acid and base triad members. Removing the acid histidine results in only a 10-fold activity loss (compared to >10,000-fold when aspartate is removed from chymotrypsin). This triad has been interpreted as a possible way of generating a less active enzyme to control cleavage ...

  8. Meningitis - Wikipedia

    en.wikipedia.org/wiki/Meningitis

    The classic triad of diagnostic signs consists of neck stiffness, sudden high fever, and altered mental status; however, all three features are present in only 44–46% of bacterial meningitis cases. [ 16 ] [ 17 ] If none of the three signs are present, acute meningitis is extremely unlikely. [ 17 ]

  9. Timeline of human evolution - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_human_evolution

    The timeline of human evolution outlines the major events in the evolutionary lineage of the modern human species, Homo sapiens, throughout the history of life, beginning some 4 billion years ago down to recent evolution within H. sapiens during and since the Last Glacial Period.