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Intro to Human Body

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Homeostasis   The condition in which the body's internal environment remains relatively constant.  
Catabolism   Chemical reactions that break down complex organic compounds into simple ones.(release energy)  
Anabolism   Reactions (synthetic) that build up smaller molecules into larger ones. (require energy)  
Metabolism   Sum of all biochemical reactions that occur within an organism.  
Feedback System Components   Receptor, Control Center, Effector  
Fast acting system controlling homeostasis   Nervous System  
Slower acting system controlling homeostasis   Endocrine System  
Types of Feedback Systems   Positive Feedback System (supports change) and Negative Feedback System (reverses change)  
Homeostatic Imbalance causes ______ that can be either __________ or __________.   disease or sickness, local, systemic  
Levels of organization.   Chemical, cellular (smallest living unit), tissue (specific function), organ (specific shape and function), system, organismal.  
Types of human tissue.   Epithelial (forms the innermost and outermost surfaces of body structures,forms glands), nervous, muscular, connective (bind and support, extracellular).  
Anatomy   "the process of cutting"The study of the structure of the body and the relation of it parts to each other, esp as revealed by dissection.  
Physiology   Science that deals with the functions of an organism or its parts.  
4 Main body cavities   cranial, thoracic, abdominal, pelvic  
viscera, visceral (function)   pertaining to organs, pertaining to the organs or to the covering of an organ (reduce friction)  
Mediastinum   Region on the thoracic cavity between the pleurae of the lungs that extends from the sternum to the vertebral column (contains the heart)  
Retroperitoneal   External to the peritoneal lining of the abdominal cavity (contains kidneys, adrenal glands, and pancreas)  
Serous membrane   Lines the thoracic and abdominal cavities (parietal layer) and covers the organs (visceral layer).  
Parietal   Pertaining to or forming the outer wall of a body cavity.  
Regions of thoracic cavity (3).   Mediastinum, pericardial, pleural  
Abdominal cavity   peritoneal  


   


 
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