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18 Cards in this Set
- Front
- Back
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Functions of the integumentary system |
Protection of underlying tissue Excretion of salts and waste Provision of sensation Maintenance of body temperature |
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Pigments of the Epidermis |
Melanin and carotene |
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Serous Membrane |
Reduces friction between the parietal and visceral surfaces of an internal cavity |
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Stratum Spinosum |
4th Layer of thick skin Contains abundant desmosomes |
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Cardiac Muscle |
Striated Involuntary uni-nucleated Has intercalated discs Has pacemaker cells |
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Stratum Spinosum |
4th Layer of thick skin Contains abundant desmosomes |
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Diffusion |
Movement of an element from an area of high concentration gradient. Low concentration to high concentration |
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Active Transport |
Require energy to move against the concentration gradient. Low concentration to high concentration |
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Cellular Homeostasis |
+ outside (sodium) - inside (potassium) |
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Facilitated Diffusion |
The rate of molecular movement is limited by the number of available carrier molecules |
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Elevated Temperature |
The rate of molecular movement is limited by the number of available carrier molecules |
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Characteristics of Epithelia |
Attachment - Regeneration Polarity - Avascularity |
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Mitosis |
Cellular division of somatic cells |
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Meiosis |
Cellular division of reproductive cells (gametes) |
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Interphase |
Stage in the cell cycle in which the cell performs its normal functions and prepares for division. |
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Skin of older persons |
More susceptible to infection due to: Thicker epidermis Skin repair takes longer Fewer dendritic cells |
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mRNA Sequence |
Complementary to: ATC in DNA: UAG Thymine (T) found only in DNA Uracil (U) found only in RNA |
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mRNA |
Vital to the cell because: mRNA can leave the nucleus DNA cannot leave the nucleus |
