Chapter 9, Urinary System, pages 294 & 295 Flashcards
Bladder
Organ where the urine collects before being excreted from the body.
Bowman’s capsule
Capsule surrounding a glomerulus and serving as a collection site for urine.
Calices, calyces
Cup shaped structures in the renal pelvis for the collection of urine.
Cortex
Outer portion of the kidney.
Creatine
Substance found in urine; elevated levels may indicate muscular dystrophy.
Creatinine
A component of creatine
Filtration
Process of separating solids from a liquid by passing it through a porous substance.
Glomerulus
Group of capillaries and a nephron.
Hilum
Portion of the kidney where blood vessels and nerves enter and exit.
Kidney
Organ that forms urine and reabsorbs essential substances back into the bloodstream.
Meatus
External opening of a canal, such as the urethra. .
Medulla
Soft, central portion of the kidney.
Nephron
Functional unit of a kidney.
Prostate
Gland surrounding the urethra in the male; active in ejaculation of semen.
Reabsorption
Process of returning essential elements to the bloodstream after filtration.
Renal pelvis
Collecting area for urine in the center of the kidney.
Renin
Enzyme produced in the kidneys to regulate the filtration rate of blood by increasing blood pressure as necessary.
Retroperitoneal
Posterior to the peritoneum.
Trigon
Triangular area at the base of the bladder through which the ureters enter and the urethra exits the bladder.
Urea
Waste product of nitrogen metabolism excreted in normal adult urine.
Ureter
One of two tubes that conduct urine from the kidney to the bladder.
Urethra
Tube through which urine is transported from the bladder to the exterior of the body.
Uric acid
Nitrogenous waste excreted in the urine.
Urinary bladder
Bladder; organ where urine collects before being excreted from the body.
Urinary system
Body system that forms and excretes urine and helps in the reabsorption of essential substances.
Urine
Fluid excreted by the urinary system.
