Topic Set 19: Movement of Substances Across Skin & Injections
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11 Terms
What is insensible perspiration?
Quick evaporation of interstitial fluid for cooling
What is sensible perspiration?
Active sweat excreted by sweat glands
What allows transdermal drug patches to absorb through skin?
Lipid solubility of the drug
What happens to skin in a hypotonic solution?
Hydration; water enters and epidermal cells swell
What happens to skin in a hypertonic solution?
Dehydration; water leaves and swelling decreases
Where is an intradermal injection delivered?
Into the dermis
What is an example of an intradermal injection?
Tuberculin skin test
Where is a subcutaneous injection delivered?
Into subcutaneous tissue (hypodermis)
What is an example of a subcutaneous injection?
Insulin
Where is an intramuscular injection delivered?
Into skeletal muscle
What are examples of intramuscular injections?
Vaccines and antibiotics