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  2. Endoplasmic reticulum - Wikipedia

    en.wikipedia.org/wiki/Endoplasmic_reticulum

    The functions of the endoplasmic reticulum can be summarized as the synthesis and export of proteins and membrane lipids, but varies between ER and cell type and cell function. The quantity of both rough and smooth endoplasmic reticulum in a cell can slowly interchange from one type to the other, depending on the changing metabolic activities ...

  3. Osteon - Wikipedia

    en.wikipedia.org/wiki/Osteon

    Diagram of a typical long bone showing both compact (cortical) and cancellous (spongy) bone. Osteons on cross-section of a bone. In osteology, the osteon or haversian system (/ h ə ˈ v ɜːr. ʒ ən /; named for Clopton Havers) is the fundamental functional unit of much compact bone.

  4. Human skeleton - Wikipedia

    en.wikipedia.org/wiki/Human_skeleton

    The human skeleton performs six major functions: support, movement, protection, production of blood cells, storage of minerals, and endocrine regulation. The human skeleton is not as sexually dimorphic as that of many other primate species, but subtle differences between sexes in the morphology of the skull, dentition, long bones, and pelvis ...

  5. Osteocyte - Wikipedia

    en.wikipedia.org/wiki/Osteocyte

    The cell body varies in size from 5–20 micrometers in diameter and contain 40–60 cell processes per cell, [4] with a cell to cell distance between 20–30 micrometers. [3] A mature osteocyte contains a single nucleus that is located toward the vascular side and has one or two nucleoli and a membrane. [ 5 ]

  6. Osteoblast - Wikipedia

    en.wikipedia.org/wiki/Osteoblast

    In the hollow within bones are many other cell types of the bone marrow. Components that are essential for osteoblast bone formation include mesenchymal stem cells (osteoblast precursor) and blood vessels that supply oxygen and nutrients for bone formation. Bone is a highly vascular tissue, and active formation of blood vessel cells, also from ...

  7. File:Arm bone.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Arm_bone.pdf

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  8. File:Human leg bones labeled.svg - Wikipedia

    en.wikipedia.org/wiki/File:Human_leg_bones...

    This file is translated using SVG <switch> elements. All translations are stored in the same file! Learn more. For most Wikipedia projects, you can embed the file normally (without a lang parameter). The Wikipedia will use its language if the SVG file supports that language. For example, the German Wikipedia will use German if the SVG file has ...

  9. Trochanter - Wikipedia

    en.wikipedia.org/wiki/Trochanter

    A trochanter is a tubercle of the femur near its joint with the hip bone. In humans and most mammals , the trochanters serve as important muscle attachment sites. Humans have two, sometimes three , trochanters.