exists and is an alternate of . The four types of membranes are: 1) cutaneous membranes; 2) serous membranes; 3) mucous membranes; and 4) synovial membranes. Mucous membranes are tissues that line body cavities or canals such as the throat, nose, mouth, urethra, rectum, and vagina.
A laryngeal mask. A laryngeal mask airway â also known as laryngeal mask and supraglottic airway â is a medical device that keeps a patient's airway open during anaesthesia or unconsciousness.
Regional anesthesia numbs a large area, or region, of the body and is used for more extensive and invasive surgery. Regional anesthesia is often used for procedures involving the lower part of the body, such as caesarian sections, prostate surgery, and operations on the legs. For example, if regional anesthesia is used for prostate surgery, the patient is numb from his navel to his toes. Some patients feel pressure or tugging during surgery performed under regional anesthesia. The most common types of regional anesthesia are spinals and epidurals.