URINARY Flashcards
what is the main function of urinary system
remove metabolic waste from blood
what is responsible for generating metabolic waste
body cells
what is removing metabolic wastes from blood important for
blood homeostasis
PARTS OF URINARY SYSTEM what is the function of kidney
produce urine
PARTS OF URINARY SYSTEM what is the function of ureters
transport urine
PARTS OF URINARY SYSTEM what is the function of urinary bladder
store urine
PARTS OF URINARY SYSTEM what is the function of urethra
secrete urine
PARTS OF URINARY SYSTEM what is the vasculature of urinary system
- renal artery
2. renal vein
ANATOMY OF KIDNEY which kidney is lower
right
ANATOMY OF KIDNEY where are kidneys located
back of abdomen behind digestive organs
ANATOMY OF KIDNEY what does not surround kidneys
visceral peritoneum (retroperitoneal)
ANATOMY OF KIDNEY where are kidneys located in utero
pelvis
- ANATOMY OF KIDNEY how does urine flow through kidneys
- minor calyx
- major calyx
- renal pelvis
- ureter
*ANATOMY OF KIDNEY where is cortex located
underneath fibrous capsule
ANATOMY OF KIDNEY where is medulla located
underneath cortex
*ANATOMY OF KIDNEY what drains into minor calyx
renal papila
what does renal lobe possess
own vasculature
ANATOMY OF KIDNEY what is renal pelvis continuous with
ureters
ANATOMY OF KIDNEY what kind of epithelium is calyx
transitional
ANATOMY OF KIDNEY what kind of epithelium in renal pelvis
transitional
ANATOMY OF KIDNEY what kind of epithelium in ureters
transitional
ANATOMY OF KIDNEY what is pathway of blood (13)
- renal artery
- segmental artery
- interlobular artery
- arcuate artery
- interlobular artery
- afferent arterioles
- capillaries
- efferent arterioles
- peritubular capillaries
- interlobular vein
- arcuate vein
- interlobular vein
- renal vein
ANATOMY OF KIDNEY what kind of blood enters through renal artery
- nutrient rich
2. oxygenated
ANATOMY OF KIDNEY what are arcuate arteries and veins
vessels that arch over pyramids
NEPHRON what is nephron
basic functional unit of kidney
NEPHRON what is nephron composed of (main)
- renal corpuscle
2. renal tubule
NEPHRON where is renal corpuscle located
cortex
NEPHRON where is proximal convoluted tubule located
cortex
NEPHRON where is distal convoluted tubule located
cortex
NEPHRON where is loop of henle located
medulla
NEPHRON where is collecting duct located
medulla
NEPHRON what are 2 types of nephrons
- cortical nephron
2. juxtamedullary nephron
NEPHRON what is the function of cortical nephron
- reabsorption
2. secretion
NEPHRON what is the function of juxtamedullary nephron
concentrate urine
NEPHRON what allows for urine to be concentrated
salt gradient
NEPHRON where is salt gradient highest and lowest
towards medulla
towards cortex
NEPHRON what are the parts of nephron (4)
- renal corpuscle
- proximal convoluted tubule
- distal convoluted tubule
- collecting tubule
NEPHRON what does collecting tubule lead to
collecting ducts
NEPHRON where does blood going into glomerulus come from
afferent arterioles
NEPHRON where does blood leaving glomerulus come from
efferent arterioles
NEPHRON how does size of afferent arteriole compare to size of efferent arteriole
afferent arteriole bigger, efferent arteriole smaller
NEPHRON how does pressure of afferent arteriole compare to pressure of efferent arteriole
afferent arteriole low pressure, efferent arteriole high pressure
NEPHRON what is glomerulus
ball of capillaries
NEPHRON what is bowman’s capsule
- cap over renal corpuscle
- parietal layer
NEPHRON what is function of mesangial cells
- control bp within capillaries to maintain optimal filtration rate
- phagocytosis
- repair
- support
NEPHRON what are podocytes
- feet that form slits around capillaries
- visceral layer
NEPHRON what is bowman’s space
- urinary space
- space bw parietal and visceral
NEPHRON what are filtration slits
spaces bw podocytes
NEPHRON what is the function of basal mem
prevent (1) RBC (2) WBC (3) platelets (4) proteins from moving from capillaries to urinary space
JUXTAGLOMERULAR APARATUS (JGA) what do JGA cells secrete
renin
JUXTAGLOMERULAR APARATUS (JGA) what is the function of JGA
- regulate blood flow
- regulate pressure
- filtrate formation
what happens at renal corpuscle
filtrate produced
what happens in proximal tubule
reabsorption (tube to blood)
- organic nutrients
- water
- electrolytes
- ions
what does loop of henle contain
- thick limb
2. thin limb
what happens in thin limb
reabsorption (tube to blood)
- water
what happens in thick limb
reabsorption (tube to blood)
- Na
- Ca
what surrounds tubules in cortex
efferent arterioles from glomerulus
what is vasa recta
capillary bed in medulla
what is the function of vasa recta
reabsorb water to preserve salt gradient
what happens in distal tubule
secretion (blood to tube) 1. acids 2. toxins reabsorption (tube to blood) - Na
what regulates reabsorption
aldosterone (hormone forom adrenal gland)
what happens in collecting tubules and ducts
reabsorption (tube to blood)
- water
what hormone allows for reabsorption of water into blood
ADH
what is the function fo ADH
open aquaporins to allow water to move from tube to blood
what is result of reabsorption of water
concentrate urine
TRANSITIONAL EPITHELIUM how are cells arranges when relaxed
stacked
TRANSITIONAL EPITHELIUM how are cells arranges when stretched
side by side
TRANSITIONAL EPITHELIUM what happens when transitional epithelial layer stretched
trigger urination
URETERS what is characteristic of ureters
impermeable
URETERS what do ureters contain
smooth muscle (for peristalsis)
URETERS how do ureters enter urinary bladder
through uretic orfices
what happens at uretopelvic junction
- stone leaving kidney
- T10 to L1
what happens at uretovesical junction
- stone entering urinary bladder
- L1 to L2
when stone crossing common iliac vessels
T11 to L2
what are layers of urinary bladder
- transitional epithelium
- lamina propria
- submucosa
- detrusor muscle
what is the function of sympathetic innervation
- stimulate contraction of internal urethral sphincter (closes)
- inhibit contraction of detrusor (relax + fill )
what is the function of parasympathetic innervation
- inhibit contraction of internal urethral sphincter (opens)
- stimulate contraction of detrusor
what is the function of somatic innervation
control external urethral sphincter
what happens to epithelium in urethra
transitional to stratified
what are 3 parts of male urethra
- prostatic
- membranous
- penile