NATS 1675 Lecture Notes - Lecture 3: Lysosome, Nuclear Membrane, Cartilage
22 May 2016
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Document Summary
Lecture 3 structural organization of the body. Anatomy is the science of structure and the relationship among the structures. Levels of the body structural organization: chemical level. Macromolecules: dna glycogen, protein molecule: cellular level. Cells: the basic structural and functional unit of an organism. Organelles: structural components with specific functions within cells. Examples: mitochondria, ribosomes, lysosomes, etc: tissue level. Tissue are groups of cells and the material surrounding them that work together to perform a particular action. Tissues epithelial connective muscular nervous simple epithelial: single layer of cells. i. e. heart, ovaries. Connect, support, and anchor various parts of the body. Consist of neurons - cells electrical impulses. stratified ephitelia: multiple layers of cells i. e skin, mouth, vagina. 2 or more tissues joined together to form body structures: organ system level. Consists of related organs that perform common functions. Some organs can be part of more than one system: organism level.
