(Latin: a round body, a ball; round, a sphere; the earth; "sphere" came from Latin globus, "round mass, sphere"; related to gleba, "clod, soil, land". Sense of "planet earth," or a three-dimensional map of it, appeared first in 1553)
2. That which is formed into a ball; a ball; a glomerate mass.
2. Inflammation of a glomerulus, specifically of the renal glomeruli, as in glomerulonephritis.
2. A variety of nephritis characterised by inflammation of the capillary loops in the glomeruli of the kidney.
3. Any glomerular disease characterized by acute, subacute, or chronic inflammation.
It occurs in acute, subacute and chronic forms and may be secondary to hemolytic streptococcal infection. Evidence also supports possible immune or autoimmune mechanisms.
2. In the olfactory bulb, an anatomically discrete module receiving input from an olfactory sensory neuron.
3. One of the structures which comprise the nephron (functional unit) in the kidney. The glomerulus is composed of capillary blood vessels which are actively involved in the filtration of the blood.
The glomerulus in the kidney was so named by the Italian anatomist Marcello Malpighi (1628-1694). The structure was once called a malphigian corpuscle. Glomerulus is the diminutive of the Latin glomus meaning "ball of yarn". It is literally a "little ball of yarn".
2. A highly organized arteriolovenular anastomosis (a vessel that directly interconnects an artery and a vein) forming a tiny nodular focus in the nailbed, pads of the fingers and toes, ears, hands, and feet and many other organs of the body.
The afferent arteriole enters the connective tissue capsule of the glomus, becomes devoid of an internal elastic membrane, and develops a relatively thick epithelioid muscular wall and small lumen; the anastomosis may be branched and convoluted, richly innervated with sympathetic and myelinated nerves, and connected with a short, thin-walled vein that drains into a periglomic vein and then into one of the veins of the skin.
The glomus functions as a shunt-or bypass-regulating mechanism in the flow of blood, temperature, and conservation of heat in the part as well as in the indirect control of the blood pressure and other functions of the circulatory system.
2. Acid plasma glycoprotein that binds to oxyhemoglobin that is free in the plasma and the complex is then removed in the liver.
2. The presence of excessive hemoglobin in the blood plasma.
2. Disorder due to abnormalities in the hemoglobin molecule, the best known being sickle cell anemia in which there is a single amino acid substitution (valine for glutamate) in position six of the beta chain. In other cases one of the globin chains is synthesised at a slower rate, despite being normal in structure.