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The Urinary System (Ch. 24)
N/A
22
Anatomy
Undergraduate 2
11/25/2011

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Cards

Term
What are the three general functions of the kidney?
Definition
elimination of wastes, chemical constancy of blood, and influences the volume of blood
Term
How many layers protect the kidney?
Definition
2 (muscle then fat)
Term
What are the two components of the uriniferous tubule?
Definition
nephron; collecting duct
Term
What is the functional unit of the kidney?
Definition
uriniferous tubule
Term
What are the two components of the renal corpuscle?
Definition
glomerulus and the glomerular capsule
Term
What is another name for the glomerular capsule?
Definition
Bowman's capsule
Term
What are the four components of the tubular section?
Definition
proximal convoluted tube, loop of henle, distal convoluted tubule, and the collecting duct
Term
What are the two components of the glomerulus?
Definition
afferent arteriole and the efferent arteriole (becomes capillary beds [veins])
Term
What are the three components of the capillary beds of the kidney?
Definition
glomerulus, pertubular capillaries, and the vasa recta
Term
What structure leads to a venous structure in the capillary beds of the kidney?
Definition
distal convoluted tubule
Term
What are the three components of Juxtaglomerular apparatus?
Definition
Macula densa cells, granular cells, and messangial cells
Term
Identify:
modified epithelial cells of the ascending limb of the loop of Henle
Definition
Macula densa cells
Term
Describe granular cells
Definition
modified smooth muscle cells of the afferent arteriole
Term
Describe messangial cells
Definition
specialized cells between the macula densa and granular cells
Term
What assists in the movement of urine down the ureters?
Definition
peristalsis of smooth muscle (NOT gravity)
Term
Define detrusor muscle
Definition
smooth muscle of the bladder wall
Term
Where does the ureter drain into the bladder?
Definition
posterior and inferior
Term
What is the urinary bladder lined with?
Definition
epithelial tissue
Term
Identify:
thickening of the smooth muscle wall at the proximal urethra
Definition
internal urethral sphincter
Term
Identify:
skeletal muscle formed from the urogenital diaphragm and surrounds the proximal urethra
Definition
external urethral sphincter
Term
What structure do you contract to keep from peeing?
Definition
external urethral sphincter
Term
What is micturition?
Definition
urination
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