EBR EMS Chapter 1 Definitions
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| abdominopelvic quadrants | health professionals divide the abdomen into four areas to help locate specific organs
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| abdominopelvic regions | anatomists have divided the abdomen into nine regions to identify the location of organs
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| anatomical position | the reference position for the body, which gives meaning to directional terms
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| anatomy | the study of the structure of an organism and the relationships of its parts
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| appendicular | refers to the upper and lower extremeties
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| atrophy | wasting away of tissue
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| axial | refers to the head, neck, and torso
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| abdominal cavity | single cavity containing the abdominal and pelvic organs
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| cranial cavity | space inside the skull that contains the brain
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| dorsal cavity | includes the cranial and spinal cavity
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| mediastinum cavity | a subdivision in the midportion of the thoracic cavity
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| pelvic cavity | the lower portion of the ventral cavity
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| pleural cavity | a subdivision of the thoracic cavity
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| spinal cavity | the space inside the spinal column through which the spinal cord passes
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| thoracic cavity | pertaining to the chest area of the body
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| ventral cavity | organ containing space in the anteroir trunk of the body that includes the thoracic and abdominopelvic cavities
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| control center |
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| diaphragm | membrane or partition that seperates the thoracic and abdominal cavities
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| superior | higher
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| inferior | lower
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| anterior | front
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| posterior | back
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| ventral | front
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| dorsal | back
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| medial | toward the midline of the body
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| lateral | further from the midline of the body
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| proximal | located nearest the center of the body
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| distal | toward the end of a structure
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| superficial | toward the surface of the body
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| deep | farther away from the body's surface
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| dissection | cutting technique used to seperate body parts for study
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| effector | responding organ
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| experimentation | performing an experiment
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| feedback loop | a complex control network classified into positive and negative
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| homeostasis | relative uniformity of the normal body's internal environment
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| hypothesis | a proposed explaination of an observed phenomenon
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| negative feedback loop | control system where information feeding back to the control center causes the level of a variable to be changed in the direction opposite to that of the initial stimulus
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| chemical | the simplest structure in a living organism
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| cellular | the smallest living unit in an organism
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| tissue | group of similar cells that perform a common function
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| organ | group of several tissue types that performs a special function
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| system | group of organs arranged so that the group can perform a more complex function than any one organ can perform alone
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| physiology | the study of body function
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| sagittal | a plane that divides the body into right and left halves longitudinally
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| midsagittal | a cut or plane that divides the body or any of its parts into two EQUAL halves
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| frontal | lengthwise plane running from side to side, dividing the body into anterior and posterior portions
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| transverse | a plane that divides the body into upper and lower halves
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| positive feedback loop | a control system that feeds back information to the control center causes the level of a variable to be pushed further in the direction of the original deviation
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| prone | lying face down
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| scientific method | any logical and systematic approach to discovering principles of nature, often involving testing
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| sensor | responding sensor in a feedback loop
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| supine | lying face up
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| theory | an explaination of a scientific principle that has been tested experimentally and found to be true
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| law | a scientific law is a theory, or explaination of a scientific principle, with an extraordinarily high degree of acceptance
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