Bowman's capsule

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capsule

 [kap´sul, kap´sūl]
1. an enclosing structure, as a soluble container enclosing a dose of medicine.
2. a cartilaginous, fatty, fibrous, or membranous structure enveloping another structure, organ, or part. adj., adj cap´sular.
 Capsule. Generalized structure of a synovial joint showing the joint or articular capsule. From Applegate, 2000.
articular capsule the saclike envelope that encloses the cavity of a synovial joint by attaching to the circumference of the articular end of each involved bone. Called also joint capsule.
adipose renal capsule the investment of fat surrounding the fibrous renal capsule, continuous at the hilus with the fat in the renal sinus.
bacterial capsule a gelatinous envelope surrounding a bacterial cell, usually polysaccharide but sometimes polypeptide in nature; it is associated with the virulence of pathogenic bacteria.
Bowman's capsule the globular dilatation forming the beginning of a renal tubule and surrounding the glomerulus. Called also glomerular capsule and malpighian capsule.
c's of the brain two layers of white matter in the substance of the brain; external capsule and internal capsule.
external capsule the layer of white fibers between the putamen and claustrum.
fibrous renal capsule the connective tissue investment of the kidney, which continues through the hilus to line the renal sinus.
Glisson's capsule a sheath of connective tissue accompanying the hepatic ducts and vessels through the hepatic portal. In hepatitis it may become stretched, which is a common cause of pain.
glomerular capsule Bowman's capsule.
capsule of heart pericardium.
internal capsule the fanlike mass of white fibers separating the lentiform nucleus laterally from the head of the caudate nucleus, the dorsal thalamus, and the tail of the caudate nucleus medially. The internal capsule carries both afferent and efferent fibers of the cerebral cortex.
joint capsule articular capsule.
capsule of lens the elastic sac enclosing the lens of the eye.
malpighian capsule Bowman's capsule.
capsule of pancreas a thin sheath of areolar tissue that invests the pancreas (but does not form a definite capsule), the septa of which extend into the gland and divide it into lobules.
renal c's the investing tissue around the kidney, divided into the fibrous renal capsule and the adipose renal capsule.
Tenon's capsule the connective tissue enveloping the posterior eyeball.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

Bowman's capsule

(bō′mənz)
n.
A double-walled, cup-shaped structure around the glomerulus of each nephron of the vertebrate kidney. It serves as a filter to remove organic wastes, excess inorganic salts, and water.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

Bowman's capsule

A double-walled rounded dilation that ensheaths the urinary tubule and the glomerulus, which has an inner (visceral) layer, formally the capsular epithelium, and an outer (parietal) layer, formally, the glomerular epithelium. It is marked by two poles:
(1) a vascular pole, into which blood flows through the afferent arterioles into the capillary network, and from the network into the efferent arterioles; and
(2) a urinary pole, which empties into the capsule’s proximal tubule.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

Bowman's capsule

The filtering unit in the kidney by which urine is formed from the blood. Sometimes called the malpighian corpuscle. (Sir William Bowman, 1816–1892, English surgeon and ophthalmologist).
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
Bowman's capsuleclick for a larger image
Fig. 79 Bowman's capsule . (a) The capsule is a small sac at the end of a kidney nephron. (b) An enlarged section of the uriniferous tubule.

Bowman's capsule

the cup-shaped structure which is attached to the end of the uriniferous tubule of the vertebrate kidney, and which contains the GLOMERULUS of blood vessels. The capsule performs a process of ultrafiltration so that the composition of the capsular fluid contains all the constituents of the blood in the glomerulus minus the blood cells and plasma proteins.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Bowman's capsule

The structure surrounding the glomerulus.
Mentioned in: Nephrotoxic Injury
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Bowman's space colloid osmotic pressure ([[PI].sub.BS]), which is normally 0 mmHg because normal filtrate is void of protein.
GFR decreases as glomerular filtrate outflow from the tubule is obstructed and the pressure of the increased filtrate volume in the Bowman's space opposes the forces favoring filtration.
If [[PI].sub.BS] rises above 0 mmHg, as it does in nephrotic conditions where protein is filtered into the Bowman's space because of changes in the filtering membrane, GFR can increase.
The glomerular membrane is highly permeable and allows fluid and small molecular weight solutes to pass into Bowman's space. The glomerular capillary tuft with its interconnected loops increases available surface area.