RENAL ANAPHY Flashcards
1
Q
functional units of kidneys
A
nephron
2
Q
2 types of nephrons
A
- cortical nephrons
- juxtamedullary nephrons
3
Q
nephrons that remove the wastes, reabsorbs the essential substances
A
cortical nephrons
4
Q
nephrons responsible for the concentration of urine
A
juxtamedullary nephrons
5
Q
blood flow through kidney (7)
A
renal artery afferent arteriole glomerular capillaries efferent arterioles peritubular capillaries vasa recta renal vein
6
Q
functions of kidney (3)
A
- removal of metabolic waste
- regulation of water and electrolytes
- maintenance of acid-base balance
7
Q
normal blood pH
A
7.35-7.45
8
Q
3 phases of urine formation
A
- glomerular filtration
- tubular reabsorption
- tubular secretion
9
Q
2 components of glomerulus
A
- 8 capillary lobes
- glomerular filtration barrier
10
Q
3 parts of glomerular filtration barrier
A
- endothelial cells (capillary wall)
- glomerular basement membrane
- podocytes (bowman’s capsule)
11
Q
2 functions of glomerular filtration barrier
A
- prevents the passage of HMW solutes (limit: <70 000 daltons)
- “shield of negativity” repels (-) molecules
12
Q
glomerular filtrate specific gravity
A
1.010
13
Q
serves as a nonselective filter of plasma substance
A
glomerulus
14
Q
3 factors that affect filtration
A
- cellular structure of capillary walls
- hydrostatic and oncotic pressure
- renin-angiotensin-aldosterone system
15
Q
pressure exerted by plasma proteins; pulls the solutes into the capillaries
give example
A
oncotic pressure
ex: albumin
