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A+P Test 1 Ch1

Intro to Human Body

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
Created by: 741879016



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