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A&P Lecture 1

Intro & Homeostasis

QuestionAnswer
Anatomy= The structure of the bodies organs
'Ana'- Open
'Tomy'- To cut
Macro or Gross Anatomy= Large structures
Micro Anatomy= Needs scientific tools to magnify
'Cyto'- Cell
'Histo'- Tissue
'ology'- The study of
Physiology= The function of the bodies organs
6 levels of organisms - 1) atom 2) cell 3) tissue 4) organ 5) organ system 6) organism
11 organ systems - 1) Integumentary 2) skeletal 3) muscular 4) cardiovascular 5) nervous 6) lymphatic 7) endocrine 8) urinary 9) respiratory 10) digestive 11) reproductive
'Homeo'- unchanging
'Stasis'- standing
Homeostatic Regulation= The adjusting physiological process of the external change in the environment
3 steps of homeostatic regulation 1) Receptor 2) Control Center 3) Effector
Example of Negative Feedback Loop -Body temp rises -Heat receptors send signals to the brain to alert brain of change in environment -Brain sends command to the body -Body begins dilating blood vessels and sweating
Example Positive Feedback Loop -Body gets a cut, bleeding begins -Platelets begin to clot the wound to stop bleeding -Receptor detects change in the environment and sends out signal -Brains control center receive signal and sends out chemical -Effector has released more and more p
Created by: jameesha1
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