BIO 167 Lecture Notes - Lecture 3: Hemolysis, Hepatocyte, Formaldehyde
26 Apr 2021
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Document Summary
All organisms are made of one or more cells. The cell is the smallest unit of life: activity of an organism depends on individual and collective cell functions, principle of complementarity of structure and function. Biochemical activities of cells dictated by their shape or form, and specific subcellular structures. Cells can only arise from other cells. All cells have the same basic parts and some common functions. Main parts of a cell: plasma (cell) membrane, nucleus. Interstitial fluid, blood plasma, cerebrospinal fluid: transport and dissolving media. Aid to digestion (gastric and intestinal fluids: act as lubricants (mucus, saliva, serous fluids) Extracellular matrix (cell glue) components: hyaluronic acid: viscous fluid like material, chondroitin sulfate: jelly like material, connective tissue fibers. Reticular fibers: forms meshwork to hold cells w/in an organ. Separates internal environment of a cell from its external environment. Plasma= fluid + lemma= husk : muscle cell = sarcolemma, nerve fiber (axon) = axolemma.
