Water content of blood must be controlled in order to keep cells
from functioning normally
If the concentration of water in the blood is too high, water will
move into body cells by osmosis, and the cells may burst Importance
If the water concentration in blood is too low, water will move out
of the cells by osmosis, causing the cells to shrink
Kidneys help regulate water content by controlling how much
water is reabsorbed and how much water is lost in urine
Kidneys make urine by taking waste products out of the blood,
and eventually excreting them
Role of Kidneys
Substances are filterest out of the blood as it passes through the
kidneys, this is called ultrafiltration
Useful substances, like glucose, ions and water, are then
absorbed back into the blood, this is selective reabsorbtion
Structures found in the kidneys
Blood from the renal artery flows throuhg a network of capillaries
called the glomerulus and into the bowman's capsule
from functioning normally
If the concentration of water in the blood is too high, water will
move into body cells by osmosis, and the cells may burst Importance
If the water concentration in blood is too low, water will move out
of the cells by osmosis, causing the cells to shrink
Kidneys help regulate water content by controlling how much
water is reabsorbed and how much water is lost in urine
Kidneys make urine by taking waste products out of the blood,
and eventually excreting them
Role of Kidneys
Substances are filterest out of the blood as it passes through the
kidneys, this is called ultrafiltration
Useful substances, like glucose, ions and water, are then
absorbed back into the blood, this is selective reabsorbtion
Structures found in the kidneys
Blood from the renal artery flows throuhg a network of capillaries
called the glomerulus and into the bowman's capsule
