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  2. Endoplasmic reticulum - Wikipedia

    en.wikipedia.org/wiki/Endoplasmic_reticulum

    Dark small circles in the network are mitochondria. The endoplasmic reticulum (ER) is a part of a transportation system of the eukaryotic cell, and has many other important functions such as protein folding. It is a type of organelle made up of two subunits – rough endoplasmic reticulum (RER), and smooth endoplasmic reticulum (SER).

  3. Hepatocyte - Wikipedia

    en.wikipedia.org/wiki/Hepatocyte

    Synthesis of proteins is by the rough endoplasmic reticulum (RER), and both the rough and smooth endoplasmic reticulum (SER) are involved in secretion of the proteins formed. The endoplasmic reticulum (ER) is involved in conjugation of proteins to lipid and carbohydrate moieties synthesized by, or modified within, the hepatocytes.

  4. Endomembrane system - Wikipedia

    en.wikipedia.org/wiki/Endomembrane_system

    The endomembrane system is composed of the different membranes (endomembranes) that are suspended in the cytoplasm within a eukaryotic cell. These membranes divide the cell into functional and structural compartments, or organelles. In eukaryotes the organelles of the endomembrane system include: the nuclear membrane, the endoplasmic reticulum ...

  5. Muscle cell - Wikipedia

    en.wikipedia.org/wiki/Muscle_cell

    A muscle cell, also known as a myocyte, is a mature contractile cell in the muscle of an animal. [1] In humans and other vertebrates there are three types: skeletal, smooth, and cardiac (cardiomyocytes). [2] A skeletal muscle cell is long and threadlike with many nuclei and is called a muscle fiber. [3] Muscle cells develop from embryonic ...

  6. Endoplasm - Wikipedia

    en.wikipedia.org/wiki/Endoplasm

    Smooth endoplasmic reticulum makes hormones and lipids, degrades toxins, and controls cellular levels of calcium. Though most control of cell division is present in the nucleus, the centrosomes present in the endoplasm assist with spindle formation. The endoplasm is the site of many activities necessary for the cell to maintain homeostasis. [2]

  7. Organelle - Wikipedia

    en.wikipedia.org/wiki/Organelle

    Organelle. In cell biology, an organelle is a specialized subunit, usually within a cell, that has a specific function. The name organelle comes from the idea that these structures are parts of cells, as organs are to the body, hence organelle, the suffix -elle being a diminutive. Organelles are either separately enclosed within their own lipid ...

  8. Enterocyte - Wikipedia

    en.wikipedia.org/wiki/Enterocyte

    Smaller lipids are transported into intestinal capillaries, while larger lipids are processed by the Golgi and smooth endoplasmic reticulum into lipoprotein chylomicra and exocytozed into lacteals. Vitamin B12 uptake. Receptors bind to the vitamin B12-gastric intrinsic factor complex and are taken into the cell. Resorption of unconjugated bile ...

  9. Peroxisome - Wikipedia

    en.wikipedia.org/wiki/Peroxisome

    Peroxisome in rat neonatal cardiomyocyte. A peroxisome (IPA: [pɛɜˈɹɒksɪˌsoʊm]) [ 1 ] is a membrane-bound organelle, a type of microbody, found in the cytoplasm of virtually all eukaryotic cells. [ 2 ][ 3 ] Peroxisomes are oxidative organelles. Frequently, molecular oxygen serves as a co-substrate, from which hydrogen peroxide (H 2 O 2 ...