Category: S

Retinitis marked by exudates, hemorrhages, blurring of the optic disk, and formation of a star-shaped figure around the macula.  

A retina having an opalescent appearance, sometimes seen in young persons.  

The enamel pulp of a developing tooth, consisting of stellate cells lying between the inner and outer epithelial layers of the enamel organ.  

Respiration marked by high-pitched crowing or barking sound heard on inspiration, caused by an obstruction near the glottis or in the respiratory passageway.  

Respiration marked by rattling or bubbling sounds. The noise made when someone breathes deeply through both the nose and mouth simultaneously, leading to the soft palate vibrating due to the merging air streams. This is often observed in individuals with brain compression or those who have had a stroke.  

An increased percussion sound over the upper lung when there is a pleural effusion in the lower part.  

The resistance to the flow of blood through the body’s blood vessels. It increases as vessels constrict (e.g., when a drug like norepinephrine is given) and decreases when vessels dilate (e.g., in septic shock). Any change in the diameter, elasticity, or number of vessels recruited can influence the measured amount of resistance to the flow…

Asexual reproduction by cloning of somatic cells.  

An agent used to relieve or cure a disease affecting the entire organism.  

The delivery of a drug from a tablet or other reservoir over many hours or days (instead of minutes or hours), to provide a durable therapeutic effect.