Lab 8 Notes: Urinary/Excretory System
Systems that participate in waste elimination:
1) Digestive system
2) Respiratory system
3) Urinary System ** main one
Metabolism- produces waste products that can become toxic and cause
severe physiological problems if not excreted.
Kidneys (2)- primary organ that separates metabolic waste products from
the blood; decides in a sample of fluid, what kind of chemicals and fluids
are useful to the body (to keep in the blood) and decide which ones to
eliminate via urine; regulate blood volume by eliminating water from the
body
The remaining 3 organs in urinary system: (transportation, storage,
elimination)
Ureters (2)- drain urine from kidney + deliver urine to the bladder
Bladder (1) - organ that stores urine giving it to urethra
Urethra (1) - carries urine to exit point from body
, Glomerulus- small capillaries in the kidney that filters blood plasma and
return useful chemical or excrete toxic ones.
Regulation of blood volume- completing by kidneys; in turn this
regulates blood pressure
Erythropoietin- a hormone that stimulates the production of red blood
cell (the kidneys regulate this)
Regulating body fluids- kidneys control amount of water and solutes that
are eliminated or conserved
MEASURMENTS:
Kidney weight: 150g
11cm long, 6cm wide and 3 cm thick (roughly like a car of soap)
Lateral surface: convex
Medial surface: concave
Medial Surface: Hilum- blood vessels enter and exit as well as ureters
Renal Parenchyma- glandular tissue that makes up the interior of the
kidneys
Divided into two zones:
Outer zone: cortex
Inner zone- medulla
Systems that participate in waste elimination:
1) Digestive system
2) Respiratory system
3) Urinary System ** main one
Metabolism- produces waste products that can become toxic and cause
severe physiological problems if not excreted.
Kidneys (2)- primary organ that separates metabolic waste products from
the blood; decides in a sample of fluid, what kind of chemicals and fluids
are useful to the body (to keep in the blood) and decide which ones to
eliminate via urine; regulate blood volume by eliminating water from the
body
The remaining 3 organs in urinary system: (transportation, storage,
elimination)
Ureters (2)- drain urine from kidney + deliver urine to the bladder
Bladder (1) - organ that stores urine giving it to urethra
Urethra (1) - carries urine to exit point from body
, Glomerulus- small capillaries in the kidney that filters blood plasma and
return useful chemical or excrete toxic ones.
Regulation of blood volume- completing by kidneys; in turn this
regulates blood pressure
Erythropoietin- a hormone that stimulates the production of red blood
cell (the kidneys regulate this)
Regulating body fluids- kidneys control amount of water and solutes that
are eliminated or conserved
MEASURMENTS:
Kidney weight: 150g
11cm long, 6cm wide and 3 cm thick (roughly like a car of soap)
Lateral surface: convex
Medial surface: concave
Medial Surface: Hilum- blood vessels enter and exit as well as ureters
Renal Parenchyma- glandular tissue that makes up the interior of the
kidneys
Divided into two zones:
Outer zone: cortex
Inner zone- medulla
