ch 17 urinary system and le kidney

what are 3 functions of the urinary system

remove blood waste, form store and expel urine, maintain blood homeostasis

what are organs of the urinary system (try to atleast name 2)

kidneys, ureters, bladder, urethra

what is the name for the location of the kidneys

retroperitoneally

which type of vessel supplies blood to the kidneys

renal arteries

what type of vessel drains blood from the kidneys

renal vein

what is the outer, inner and central cavity of kindey called

renal cortex, renal medulla, renal pelvis

what is the functional unit of the kidney

nephron

what is the function of afferent arteriole? Whats a feature of it

brings blood to glomerulus, diameter affects filtration rate and pressure

what is the function of the efferent arteriole? Whats a feature of it

carries blood away from glomerulus, becomes peritubular capillary

what process takes place @ bowmans capsule/glomerulus?

FILTRATION of water, nutrients, wastes and salts

what is another name for bowmans capsule/glomerulus?

renal corpuscle

what process takes place @ proximal convoluted tubule

REABSORPTION of water, nutrients, and salts into the blood

what process takes place @ descending loop of henle?

reabsorption of water into blood

what process takes place @ ascending loop of henle?

reabsportion of salts into blood

what enzyme does the juxtaglomerular apparatus secrete? what does it lead to

renin, vasoconstriction

what is net filtration pressure?

the pressure that forces substances out of the blood into nephron

what is th function of the peritubular capillary?

it surrounds all parts of the nephron

what process takes place in the distal convoluted tubule?

SECRETION of drugs, ammonia, h+, k+ out of blood

what is the function of the collection duct

leftover water, salts and waste exit as urine

what are the 2 regulating hormones of the urinary system and how

aldosterone reabsorbs Na+, secretes k+
ADH reabsorbs water

what is the urine made of (3 things)

mostly water, nitrogenous wastes (urea, ammonia, uric acid), electrolytes

what are kidney stones made of

uric acid, calcium and phosphate

what is the detrustor muscles? waht do they do

smooth muscle layers of the bladder wall, help dispel urine

whats the name of the urination reflex

micturition

do voluntary or involuntary impulses control release of urine?

voluntary