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21 Cards in this Set
- Front
- Back
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Cytology
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Study of cells
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Histology
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Study of tissues
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Embryology
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Study of developmental changes that occur begore birth
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Homeostasis
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Abikty of body to maintain relatively stable internal conditions despite constant changes in outside world
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Steps in homeostatic control
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1. Stimulus
2. Receptir 3. Input (1-3= afferent pathway) 4. Contol center 5. Output 6. Effectir 7. Response (5-7= efferent pathway) |
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Stimulus
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Produces change in variable
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Receptor
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Detects change
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Input
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Info flows along afferent (approach) pathway
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Control center
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Brain
Determines setpoint or range that variable should be maintained |
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Effector
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Provides means for control center's response to stimulus (output)
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Negative feedback mechanism
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Most common
Causes variable to change in OPPOSITE direction |
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Positive feedback mechanism
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Enhances stimulus in SAME direction
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Homeostatic imbalance
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Most disease can be regarded as homeostatic imbalance
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Anatomical variabilty
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Small things may be slightly out of place or missing, but that's ok
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Sagittal plane
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Vertical plane that divides body into right & left parts
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Midsagittal plane
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Aka median plane
A sagittal plane that is exactly midline |
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Parasagittal plane
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A sagittal plane slightly offset from midline
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Frontal plane
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Vertical plane that divides body into anterior (front) & posterior (back) parts
Aka coronal plane |
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Transverse plane
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Horizontal plane that goes grom right to left
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Oblique sections
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Diagonal planes between hirizontal & vertical surfaces
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This card
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Intentionally blank
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