Table of Contents
- 1 What is the 2nd step of nephron filtration?
- 2 Where is the blood transported after the glomerulus?
- 3 What are the 2 structures that make up a nephron?
- 4 What is ultra filtration in kidney?
- 5 What portion of the nephron extend into the medulla?
- 6 What are the 2 main parts of the nephron?
- 7 How does glomerular filtration occur in the renal system?
- 8 How is the reabsorption of water regulated in the nephron?
- 9 How is renal secretion different from reabsorption of blood?
What is the 2nd step of nephron filtration?
When the filtrate exits the glomerulus, it flows into a duct in the nephron called the renal tubule. As it moves, the needed substances and some water are reabsorbed through the tube wall into adjacent capillaries. This reabsorption of vital nutrients from the filtrate is the second step in urine creation.
Where is the blood transported after the glomerulus?
From the glomerulus the blood pressure drops and the blood flows into arterioles which coil around the nephrons. These in turn connect to a series of small veins. These vessels reunite and ultimately form the renal vein. About one quarter of the total cardiac output (or total blood flow) circulates through the kidneys.
What is the order of blood flow through the nephron?
extra info: The correct order for filtrate flow through a nephron is Glomerular capsule, PCT, loop of Henle, DCT, collecting duct. Filtrate is formed as plasma filters into the glomerular capsule.
What are the 2 structures that make up a nephron?
A nephron is made of two parts:
- a renal corpuscle, which is the initial filtering component, and.
- a renal tubule that processes and carries away the filtered fluid.
What is ultra filtration in kidney?
Ultrafiltration is the removal of fluid from a patient and is one of the functions of the kidneys that dialysis treatment replaces. Ultrafiltration occurs when fluid passes across a semipermeable membrane (a membrane that allows some substances to pass through but not others) due to a driving pressure.
How is the nephron a two capillary system?
The renal circulation is unusual in that it breaks into two separate capillary beds: the glomerular bed and the peritubular bed. These two capillary networks are arranged in series, so that all of the renal blood flow passes through both.
What portion of the nephron extend into the medulla?
These nephrons are called cortical nephrons. About 15 percent of nephrons have long loops of Henle that extend deep into the medulla and are called juxtamedullary nephrons.
What are the 2 main parts of the nephron?
What is the portion of the kidney that extends between the renal pyramids?
self-quiz
| Question | Answer |
|---|---|
| This is smooth dense irregular connective tissue that is continuous with the outer coat of the ureter. | Renal Capsule |
| The portion of the kidney that extends between the renal pyramids is called the ___. | Renal Columns |
How does glomerular filtration occur in the renal system?
Glomerular filtration is the renal process whereby fluid in the blood is filtered across the capillaries of the glomerulus. The formation of urine begins with the process of filtration. Fluid and small solutes are forced under pressure to flow from the glomerulus into the capsular space of the glomerular capsule.
How is the reabsorption of water regulated in the nephron?
Various portions of the nephron differ in their capacity to reabsorb water and specific solutes. While much of the reabsorption and secretion occur passively based on concentration gradients, the amount of water that is reabsorbed or lost is tightly regulated.
What is the rate at which the kidneys filter blood?
The glomerular filtration rate. The rate at which kidneys filter blood is called the glomerular filtration rate. The main driving force for the filtering process, or outward pressure is the blood pressure as it enters the glomerulus.
How is renal secretion different from reabsorption of blood?
Renal secretion is different from reabsorption because it deals with filtering and cleaning substances from the blood, rather than retaining them. The substances that are secreted into the tubular fluid for removal from the body include: