O negative is a blood group that neither has the A or B markers nor the Rh factor. In its plasma, it donât has anti-A antibodies and anti-B antibodies. People with O negative blood group can donate their blood to all types of blood groups either A, B, AB, O, their -ve and +ve.
Larynx (Throat) Polyps. Laryngeal polyps (also called throat or vocal cord polyps) are growths on the larynx (voice box). In most cases it is the result of injury to the vocal cords (folds of mucous tissue in the voice box) through overuse of the voice.In the vast majority of cases, they are not cancerous.he most common sites for growth are the nasal passage of the nose, the vocal cords (larynx) and colon (colorectal polyp). The two types unique to women are uterine polyps and cervical polyps. The cause of cervical polyps is not completely understood.
Larynx, also called voice box, a hollow, tubular structure connected to the top of the windpipe (trachea); air passes through the larynx on its way to the lungs. The larynx also produces vocal sounds and prevents the passage of food and other foreign particles into the lower respiratory tracts. The larynx is composed of an external skeleton of cartilage plates that prevents collapse of the structure. The plates are fastened together by membranes and muscle fibres.