Urinary System Pt 1 Flashcards
The kidney has several important homeostatic, hormonal, and metabolic
functions that include:
The maintenance of water and electrolyte homeostasis.
* Regulation of acid-base balance in conjunction with the respiratory system.
* Excretion of metabolic waste products, especially the toxic nitrogenous
compounds.
* Production of renin for blood pressure control and erythropoietin, which
stimulates red blood cell production in the bone marrow.
* Conversion of vitamin D into active form for the regulation of calcium
balance.
_____ arterioles drain
the glomeruli & form
capillary networks
Efferent
? Drain cortical nephrons
and form _____ take
up substances resorbed
by tubular epithelium)
peritubular
capillary network
(nephron) Two main components; ____) &
____
renal
corpuscle (filters blood plasma & renal tubule (modifies filtrate to
form urine)
Two main components; renal
corpuscle (filters blood plasma) &
renal tubule (modifies filtrate to
form urine)
*?
functional unit of the kidney
nephron
(filters blood plasma/filters fluid from blood)
renal
corpuscle
(modifies filtrate to
form urine)
renal tubule
nephron: Parts are modified for
specific ____
functions
physiological
(nephron)
____– can be
subcapsular (short loops)
or midcortical
(inetermediate)
Cortical
Juxtamedullary (long)
*
Role of the ____: Maintenance of internal fluid
composition and volume (internal environment)
Kidneys
Tuft of fenestrated capillaries - the glomerulus; Surrounded by ____
urinary (Bowman’s) capsule
(renal corpuscle) Capillaries invaginate into Bowman’s capsule.Capillaries are in contact with the _______
visceral layer (podocytes).
Secrete the mesangial matrix as well
as vasoactive factors and
cytokines.
Mesangial Cells