Bowman's capsule
(noun)
A cup-like sac at the beginning of the tubular component of a nephron in the mammalian kidney.
Examples of Bowman's capsule in the following topics:
-
Regulation of Glomerular Filtration Rate
- GFR=Filtration Constant X (Hydrostatic Glomerulus Pressure–Hydrostatic Bowman's Capsule Pressure)–(Osmotic Glomerulus Pressure+Osmotic Bowman's Capsule Pressure)
- Changes in either the hydrostatic or osmotic pressure in the glomerulus or Bowman's capsule will change GFR.
- The Bowman's capsule space exerts hydrostatic pressure of its own that pushes against the glomerulus.
- Increased Bowman's capsule hydrostatic pressure will decrease GFR, while decreased Bowman's capsule hydrostatic pressure will increase GFR.
- An obstruction will increase the Bowman's capsule hydrostatic pressure and will consequently decrease GFR.
-
Glomerular Diseases
- Bowman's capsule surround the glomerulus.
- The blood is filtered through the capillaries of the glomerulus into the Bowman's capsule.
- The Bowman's capsule empties the filtrate into a tubule that is also part of the nephron.
- This, in turn, aids the process of ultrafiltration, where fluids and soluble materials in the blood are forced out of the capillaries and into Bowman's capsule.
- A glomerulus and its surrounding Bowman's capsule constitute a renal corpuscle, the basic filtration unit of the kidney.
-
Glomerular Filtration
- The Bowman's capsule (also called the glomerular capsule) surrounds the glomerulus and is composed of visceral (simple squamous epithelial cells—inner) and parietal (simple squamous epithelial cells—outer) layers.
- A diagram showing the afferent and efferent arterioles bringing blood in and out of the Bowman's capsule, a cup-like sac at the beginning of the tubular component of a nephron.
-
Bulk Flow: Filtration and Reabsorption
- Each nephron begins in a renal corpuscle composed of a glomerulus containing numerous capillaries enclosed in a Bowman's capsule.
- Proteins and other large molecules are filtered out of the oxygenated blood in the glomerulus and pass into Bowman's capsule and the tubular fluid contained within.
-
Nephron, Parts, and Histology
- Here, fluid and solutes are filtered out of the blood and into the space made by Bowman's capsule.
- The Bowman's capsule (also called the glomerular capsule) surrounds the glomerulus.
- Bowman's capsule, 4.
-
Nephron: The Functional Unit of the Kidney
- The renal corpuscle, located in the renal cortex, is composed of a network of capillaries known as the glomerulus, as well as a cup-shaped chamber that surrounds it: the glomerular or Bowman's capsule.
-
Internal Anatomy of the Kidneys
- The renal cortex is a space between the medulla and the outer capsule.
- The kidneys are surrounded by a renal cortex, a layer of tissue that is also covered by renal fascia (connective tissue) and the renal capsule.
- At one end of each nephron, in the cortex of the kidney, is a cup-shaped structure called the Bowman's capsule.
- It surrounds a tuft of capillaries called the glomerulus that carries blood from the renal arteries into the nephron, where plasma is filtered through the capsule.
- After entering the capsule, the filtered fluid flows along the proximal convoluted tubule to the loop of Henle and then to the distal convoluted tubule and the collecting ducts, which flow into the ureter.
-
Basement Membranes and Diseases
- The most notable examples of basement membranes are in the glomerular filtration of the kidney, by the fusion of the basal lamina from the endothelium of glomerular capillaries and the basal lamina of the epithelium of the Bowman's capsule; and between lung alveoli and pulmonary capillaries, by the fusion of the basal lamina of the lung alveoli and of the basal lamina of the lung capillaries, which is where oxygen and CO2 diffusion happens.
-
Supply of Blood and Nerves to the Kidneys
- These afferent arterioles branch into the glomerular capillaries, which facilitate fluid transfer to the nephrons inside the Bowman's capsule, while efferent arterioles take blood away from the glomerulus, and into the interlobular capillaries, which provide tissue oxygenation to the parenchyma of the kidney.
-
Glycocalyx and Capsule