Human urinary system

1.

Human Urinary System

2.

Lesson objectives
To learn the structure of human urinary
organs

3.

Lets think!
Why do some people need to use
dialysis machine?

4.

The Job of the Urinary System:
It is responsible for cleaning the
blood by removing metabolic
wastes, excess solutes, and excess
water and excreting them as urine
Besides removing urea, it also
removes excess salts or glucose, the
remnants of drugs, and excess water
and keeps homeostasis.

5.

Parts of Urinary System
Kidneys
Ureters
Urinary bladder
Urethra

6.

Kidneys
The pair of
beanshaped
organs that
filters blood
and makes
urine.

7.

INTERESTING FACTS ABOUT
KIDNEYS
The Hard-working Kidneys
The two kidneys in the body receive
between 1100 – 2000 liters of blood
per a day.
Because the body has only about 5.6
liters of blood, your blood runs
through the kidneys to be cleaned
about once every four minutes.

8.

Kidney structure
Kidneys have two parts : cortex and
medulla

9.

Nephrons
Each kidney
consists of
millions of
nephrons –
the
fundamental
units of the
kidney.

10.

Nephrons filters blood and as a
result urine is formed.
Urine passes into tubules of
nephrons.
Tubules join to form renal pelvis.
Renal pelvis collect urine from
nephron tubules.