Histology and Overview of Urinary System Flashcards
Label layer of kidney

Medulla
Label layer of kidney

Cortex
Label layer of kidney

Label
Renal corpuscle
Organs of the urinary system
- Kidneys
- Ureters
- Urinary Bladder
- Urethra
The kidney is organized into ___,___ and _____.
Cortex
Medulla
Renal pelvis

Functions of the kidneys
- Acts as a blood filter
- Maintains electrolyte, acid-base, and fluid balance of blood
- Removes nitrogenous wastes
- Homeostatic organ
- Releases hormones
- Calcitriol (Vitamin D)
- Erythropoietin
Which hormones are released by the kidney?
- Calcitriol (Vitamin D)
- Erythropoietin
Label the internal anatomy of the kidneys
____________ are cup-shaped structures that funnel urine towards the renal pelvis.
Calyces

Which part of the kidney functions as a acinus?
Renal corpuscle
NOTE: Each corpuscle “secretes” a filtrate of blood plasma which drains into a renal tubule
Which part of the kidney functions as striated ducts?
Renal tubules
NOTE: Renal tubules modify the filtrate by reabsorbing everything that is not waste
What are the components of the nephron?
- Renal corpuscle
- Proximal convulted tubule
- Loop of Henle
- Distal convoluted tubule
- Collecting duct
The renal corpuscles are the sites where the process of __________formation begins with a filtrate of blood plasma.
urine
Each renal corpuscle consists of an epithelial cup called __________ enclosing a knot of capillaries and other elements called the __________.
Bownman’s capsule; glomerulus
A proximal convoluted tubule drains filtrate _______ (toward/away) from a renal corpuscle.
Away
Where does the distal convoluted tubule pass near the original corpuscle?
At the juxtaglomerular apparatus
*It then leads to a collecting duct
A collecting duct receives fluid from several distal tubules, then passes through the medulla and drains into the _________.
Pelvis
Label
________ of blood is filtered by the kidneys.
125 ml/min
NOTE: Less than 1% of this filtrate reaches the bladder
Each kidney contains approximately ____________ renal corpuscles and an equal number of nephrons.
1,500,000
The kidney filters approximately _____ of cardiac output.
20%
Blood flow in the kidneys
Capillaries of the kidneys
Glomerulus









