Zusammenfassung der Ressource
Urinary System
- Structures and Functions
- 2 Kidneys
- Regulate blood volume and compisition, help regulate blood
pressure, synthesise glucose, release erythropoieten, participate
in vitamin D synthesis and excrete waste in urine.
- 2 Ureters
- Transport urine from kidneys to urinary badder
- Urinary bladder
- Stores bladder
- Urethra
- Discharges urine from the body
- FUNCTION: to filter blood passing through kidneys to produce urine. Also regulates volume and composition of body fluids.
- Macrastructure of the kidney
- Lies between level of last thoracic and third lumbar
verebrae on posterior abdominal wall. Bean shaped organ.
- 3 areas: fibrous capsule > cortex - reddish brown layer below capsule. >
Medulla - innermost, consists of pale conial shaped striations called pyramids.
- Functional units of kidney are nephrons. Consists of 2
parts: > Renal corpsucle: glomerulus and bowmans
capsuale, > Renal tubule: .proximal convoluted tubule .loop
of henle . distal convoluted tubule
- Process of urine function
- FILTRATION: > Water and solutes move from blood into capsule then tubule to form filtrate.
SELECTIVE REABSORBTION: > Filtrate constituents required to maintain body's fluid and
electrolyte balance are reabsorbed. SECRETION: > Transfer of substances from blood into tubular
fluid.
- Normal / abnormal contstituents of urine
- Transportation, storage, and elimination of urine