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by: Ruth carmona
Ruth carmona

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About this Document

brief description of important concepts found in this lecture.
Anatomy and Physiology B
Christopher Kehrier
Class Notes
homeostasis, anatomy, Physiology




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This 1 page Class Notes was uploaded by Ruth carmona on Sunday August 28, 2016. The Class Notes belongs to BIOL 191B at 1 MDSS-SGSLM-Langley AFB Advanced Education in General Dentistry 12 Months taught by Christopher Kehrier in Fall 2016. Since its upload, it has received 4 views. For similar materials see Anatomy and Physiology B in Biology at 1 MDSS-SGSLM-Langley AFB Advanced Education in General Dentistry 12 Months.


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Date Created: 08/28/16
Lecture #1 homeostasis Anatomy: study of structure. Physiology: study of function. 11 organ systems: respiratory, cardiovascular, digestive, endocrine, renal,  reproductive, muscular, lymphatic, skeletal, nervous, and integumentary. Homeostasis: a dynamic equilibrium that maintains a stable internal  environment no matter the conditions of the external environment.  Characteristics of living organisms: Movement, maintaining boundaries,  responsiveness, digestion, metabolism, excretion, growth, and metabolism. Intrinsic regulation: an automatic response that occurs in the body due to an  environmental change.  Extrinsic regulation: a response that is controlled by the nervous and  endocrine systems due to an outside source.  Stimulus: higher or lower than the set point. Receptor: detects the altered “set point” Control center: sends the command message to fix any change.  Effector: an organ or group of cells. Response: what fixes the initial change.  Result: outcome of due to change, which leads to homeostasis. Negative feedback system: negates the stimulus and reverses the change.  (most common) ex) kidney regulation= gets rid of excess salt.  Positive feedback system: a change that is amplified and is rare. ex) child  birth= more contraction more stretching more space for baby to be born.


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