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Anatomy
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The branch of science that studies the structure of the body
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Physiology
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The branch of science that describes how the body functions
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Body Levels of Organization (simple to complex)
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1: Atoms 2: Molecules 3: Cells 4: Tissues 5: Organs 6: Organ Systems 7: Human Organism
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Major Organ Systems
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Integumentary, Skeletal, Muscular, Nervous, Endocrine, Circulatory, Lymphatic, Immune
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Homeostasis
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The body's ability to maintain a stable internal environment in response to a changing environment.
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Sagittal Plane
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Divides the body lengthwise into the right and left planes
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Frontal Plane
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Divides the body into anterior and posterior planes
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Transverse Plan
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Divides the body horizontally into upper and lower planes
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Divisions of the Abdominopelvic Cavity
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Upper Right Quadrant (URQ)Upper Left Quadrant (ULQ)Lower Right Quadrant (LRQ)Lower Left Quadrant (LLQ) |
Types of Ions
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Cations: Positively ChargedAnions: Negatively Charged
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Water
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Universal Solvent, Temperature Regulator, Ideal Lubricant, Crucial part of most chemical reactions, Protective mechanism
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Acid
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Anelectrolyte that dissociates into H+ (hydrogen ion) and an anion
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Base
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Substance, often OH- (hydroxyl ion), that combines with H+ to make a solution less acidic
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Acidosis
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To many H+ ions , pH less the 7.35
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Alkalosis
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To few H+ ions, pH greater then 7.45
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