Administration, drugs patches, topical application

RNase (RNAse ribonuclease) An enzyme that cleaves RNA. routes of administration of drugs There are many different routes but common ones include intravascular injection or infusion (into the blood vessels, e.g. by drip, mainly intravenous (into veins) but sometimes intra-arterial (into arteries) intramuscular (injection into muscles) subcutaneous (injection beneath the dermis of the skin) intradermal (injection into the skin) transdermal (across the skin. e.g. from skin patches) topical (application to the skin or mucous membranes) per rectum (by an ointment or suppository into the rectum) intravaginally (by an ointment or pessary into the vagina) intrathecal (by injection into the subarachnoid space of the spinal cord) intranasally (often as a spray) orally (by mouth) inhalation. rRNA ribosomal RNA. 

Transdermal and Topical Administration Transdermal administration is used to apply the drug on the skin surface. The drug is absorbed and transported by blood to receptors, which may be remote from the part of the skin where the transdermal patch is. The flrst pass metabohsm is circumvented. Topical administration is used to apply the drug for local effects. The typical areas for topical application are the skin, eyes, throat, nose, and vagina. 

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