-Low cholesterol diet
-Low salt diet
-Gluten free diet
-High or low calorie diets
Excretion:Is the process of
eliminating or expelling waste
matter from our bodys.
Excretion of CO2: Carbon
dioxide is produced during
cellular respiration and is
excreted from the body by
Wastes that are solids:The urine
and the sweat.
The urine:This is usually yellow
or transparent , but it can be
opaque when there is a lot of
waste. More or less the 95% is
water and the other 5% are
dissolved substances .The
composition is similar to blood
plasma .Urea is the primary
waste molecule in the urine .
Sweat:Is similar to urine but is
more dilute , approximately 99%
sweat glands.The tiny , tubular
structures within the skin expel
sweat through pores on the surface
of the skin .
The urinary system: Also stores the
urine until it is released from the body.
2.Renal vein(los mñqtos)
4.Ureters(pegao en cebolla)
5.Uretha(punta de la cebolla)
9.Blood vessels(la piel)
The two functions of the kidney:
They help to eliminate waste
molecules from the blood.
In this way the kidneys contribute
to the body's homeostasis , which
is the ongoing maintenance of
certain internal conditions.
How do the kidneys work?Healthy
kidneys filter about a half cup of
blood every minute , removing
wastes and extra water to make
urine .The urine flows from the
kidneys to the bladder through two
thin tubes of muscle called ureters ,
one of each side of your bladder.
Kidney function: 1.Blood entering the
kidneys moves through the capillary
networks where filtrations occurs.
2.Some of the molecules it contains
are reabsorbed by the nearby capillaries
.3.The result is the urine , which will be
The nephron :Is the longitudinal
section of the kidney.
tubule(esta con los colores)
collecting ducts(el grande)