physiology final 2
Terms
undefined, object
copy deck
- Afferent arteriole
- carries blood to glomerulus
- Glomerulus
- a tuft of capillaries that filters a protein-free plasma into the tubular component
- efferent arteriole
- carries blood from the glomerulus
- peritubular capillaries
- supply the renal tissue; involved in exchanges with fluid in the tubular lumen
- justaglomerular apparatus
- produces substances involved in the control of kidney function.
- bowman's capsule
- collects glomerular filtrate
- proximal tubule
- uncontrolled reabsorption an secretion of selected substances occurs here
- loop of henle
- establishes an osmotic gradient in the renal medulla that is important in the kidney's ability to produce urine of varying concentration
- distal tubule and collecting duct
- variable, controlled reabsorption of Na+ and water and secretion of K+ and H+ occur here; fluid leaving the collecting duct is urine, which enters the renal pelvis
- Glomerular Filtration
- nondiscriminant filtration of protein-free plasma from the glomerulus into bowman's capsule
- Tubular Reabsorption
- selective movement of filtered substances from the tubular lumen into the peritubular capillaries
- Tubular Secretion
- Selective movement of nonfiltered substances from the peritubular capillaries into the tubular lumen
- glomerular capillary blood pressure
- fluid pressure exerted by the blood within the glomerular capillaries
- plasma-colloid osmotic pressure
- caused by the unequal distribution of plasma proteins across the glomerular membrane
- bowman's capsule hydrostatic pressure
- the pressure exerted by fluid in this initial part of the tubule