Flashcards in The Urinary System Deck (53)
What are the four major components making up the urinary system?
The kidneys, the ureters, the bladder and the urethra
Blood is supplied to each kidney by which vessels?
The renal arteries which arise from the aorta
Which vessels drain the blood from each kidney?
One or more renal veins drain the blood from each kidney to the inferior vena cava
The kidneys have a principle function of maintaining which three things
maintaining water, electrolytes and acid base
What do the kidneys excrete
toxic metabolic waste products especially nitrogenous molecules such as urea and creatinine
The kidney is involved in the osmotic regulation of what?
The kidney is involved in other functions including hormonal and metabolic functions, list three things that they synthesise/aid in synthesis
Renin, erythropoietin and vit D
What does the renin synthesis in the kidney help in
a mechanism to control blood pressure
What does the synthesis of erythropoietin in the kidneys aid in
promotes red blood cell formation
How is the kidney involved in vitamin D and absorption of calcium
Vit d which regulates calcium balance is converted to a biologically active form in the kidney
What is the site of entry and exit of the renal blood vessels and the ureter called?
*Label this kidney homie
There ya go
Where do nephrons arise from and where do they go to
nephrons arise in the cortex, loop down into the medulla and return to the cortex
The renal medulla is made up of how many pyramids?
What do the renal medulla project into?
Into calyces-papillae / renal papillae
The surface of the calyces-papillae/ renal papillae is the opening of what?
The collecting ducts
The base of the pyramid consists of 400-500 elongated parallel arrays of tubules called?
medullary rays - they penetrate the cortex
What does each medullary ray consist of?
Straight collecting ducts surrounded by tubular portions of the nephron
What is the functional unit of the kidney?
*Label this diagram of the functional unit of the kidney
there ya go
How many nephrons are there
1-4 million filtering units
What does the nephron consist of
the renal corpuscle, the proximal convoluted tubule, the loop of henle and the distal convoluted tubule , collecting duct
What is the renal corpuscle?
a tuft of capillaries, the glomerulus as well as the urinary poles, the afferent and efferent vessels, etc
who discovered the renal corpuscle?
sir william bowman - a surgeon 1816-1892
*Label this image of the renal corpuscle
there ya go
What are the two poles on the renal corpuscle
the urinary pole and the vascular pole
what may the glomerulus and bowman's capsule sometimes be referred to as
the malpighian body
What two layers are present on the Bowman's capsule
the visceral and parietal layer
*label the visceral and parietal layer of the Bowman's capsule
there ya go