Human urinary system

1. HUMAN
URINARY
SYSTEM

2.  Is the set of organs in charge
of filter blood, produce,
transport collect and expel
urine.
 Urine is the waste product
from blood filtering. Its
composition is 95% water,
2.5% urea and 2.5% other
wastes as salts.
HUMAN URINARY SYSTEM

3. ORGANS OF THE URINARY SYSTEM
 ONE PAIR OF KIDNEYS.
 ONE PAIR OF URETERS.
 ONE URINARY BLADDER.
 ONE URETHRA.

4. FUNCTIONS
 KIDNEY: Filters the blood. Uses
hyperosmosis to remove ions, nitrogen,
phosphorus and other elements and excess
of water from the blood.
 Ureters: transport urine from the kidneys to
the urinary bladder.
 Urinary bladder: Is a muscular bag like
organ that stores urine until expeling.
 Urethra: Tubular structure that receives
urine from the bladder and carries it to the
outside of the body.

5. KIDNEY
 Could be considered the most important organ of
the urinary system.
 Is a bean like shaped organ, comes in pair and is
the responsable to filter the blood. It is divided
into:
 RENAL CORTEX: the outer part of the kidney.
 RENAL MEDULLA: consist on six to ten cone-
shapedrenal pyramids. Contains the nephron, so is in
this part of the kidneys where filtration occurs.
 RENAL PELVIS: is a hollow chamber that connects
the kidney to the uretes, collects the urine to be
transported by ureters.

6. NEPHRON
Functional and structural unit of
kidneys. They perform:
1. Filtration
2. Reabsorption
3. Secretion/excretion
• The nephron functions through
ultrafiltration.

7. NEPHRON STRUCTURE AND FUNCTION