Anatomy and Cell Biology 3309 Lecture Notes - Lecture 1: Smooth Muscle Tissue, Blood Vessel, Histology
5 Apr 2018
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All cells in tissue have same function more or less. Organ system: composed of several organs that perform a common function. Find similar tissues in different organs because they have similar functions: e. g. smooth muscle is in the uterus too, tissues are building blocks that all organs/organ systems are made of. 4 major components all living things are made of: carbohydrates, nucleic acids, proteins, lipids. Due to their biochemical nature they can be distinguished by certain agents applied to the tissue: components stand out how you differentiate between the components, helps you visualize different structures within the tissue. Traditional light microscopy of stained tissue sections: aka bright light, uses visible light to illuminate certain structures in the thin slides of a tissue. Phase or differential interference contrast (nomarski): uses different refractive indices within a specimen for visualization of living cells in culture. Fluorescence microscopy: fluorescent molecules (tagged antibodies) emit light at different wavelengths when exposed to uv light.
