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17 Cards in this Set
- Front
- Back
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All body systems working together to maintain a stable internal environment.
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Homeostasis
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Body systems respond to external and internal changes to maintain a normal range (body temperature, electrolyte balance, pH, etc.)
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Homeostasis
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– Some aspect of body function that falls outside the normal range.
Failure to function within a normal range results in disease and possibly death |
Homeostatic imbalance
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What are the three components of the feed back loop?
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1.) Receptor
2.) Integrating Center 3.) Effector |
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This part of the feed back loop
senses change in the body |
Receptor`
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This part of the feed back loop
control center that processes the sensory information, ‘makes a decision’, and directs the response |
Control Center
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This part of the negative feed back loop carries out the final corrective action to restore homeostasis
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Effector
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Most homeostatic mechanisms by_________- body senses a change and activates mechanisms to reverse it
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Negative feed back
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a physiological change leads to more change in same direction
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Positive feed back loop
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This is a medical application:
injected or swallowed fills hollow structures |
Radiopaque substances
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low-intensity X rays with digital enhancement
slice type image |
Computed tomography
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slice type image
superior quality to CT scan best for soft tissue alignment & realignment of hydrogen atoms with magnetic field & radio waves varying levels of energy given off used by computer to produce an image |
Magnetic Resonance Imaging
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second oldest & second most widely used
Mechanics sound waves echo back from internal organs Avoids harmful x rays low resolution |
sonography
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= head, neck, & trunk
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Axial Region
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= trunk above diaphragm (chest)
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Thoracic region
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= trunk below the diaphragm
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Abdominal region
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= upper & lower limbs
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appendicular region
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