Category: H

A macromolecule of the proteoglycan family found on cell walls and in basement membranes. It is instrumental in embryonic organ development, blood vessel development, and cell adhesion. It also regulates blood coagulation and growth factor-cytokine action.  

A substance such as glucose or sodium chloride present in the blood and excreted by the kidney only when its concentration exceeds a certain level.  

Strabismus in which the deviation of the visual axis is in the horizontal plane.  

A disorder of erythrocytes usually inherited as an autosomal dominant. A membrane defect in the red blood cells permits the entry of excess sodium ions and water, causing the cells to swell. Hemolysis and anemia range from mild to severe.  

Stomatitis seen with primary infection with herpes simplex virus. A type of mouth inflammation distinguished by the appearance of blisters or cold sores.  

Envenomation by a fire ant, bee, hornet, or wasp. The sting from any of these insects may cause localized or, in some sensitized patients, systemic allergic reactions. Stings by venomous insects are one of the most common causes of anaphylaxis found in hospital emergency departments.  

A stimulus that acts only on specific sensory end organs.  

Deprivation of blood flow to the radial artery, after an arteriovenous access (i.e., for hemodialysis)  as been surgically placed in a patient’s arm. If blood flow to the hand is not restored, the limb may become cold, painful, pale, or gangrenous.  

A widely used method of staining tissues for microscopic examination. It stains nuclei blue-black and cytoplasm pink.  

Febrile stage in a malarial paroxysm.