Kidneys And Control Of Water

Notes on kidneys and control of water for GCSE Science double award, maintenance of life module

HideShow resource information
Preview of Kidneys And Control Of Water

First 89 words of the document:

Homeostasis 24/04/20
06
Homeostasis means "controlling internal conditions":
Waste products that need to be removed + how
CO2 Produced by respiration, removed via lungs
Urea Produced by liver breaking down amino acids,
removed by kidneys and transferred to bladder
Internal conditions that need controlling + how
Temperature Increased by shivering, lost by sweating
Ion content Increased by eating, lost by sweating + urine
Water content Increased by drinking, lost by sweating + urine
Blood glucose Increased and decreased by hormones

Other pages in this set

Page 2

Preview of page 2

Here's a taster:

Formation of Urea
24/04/20
06
· Urea is a soluble waste
product made by the liver.
· Excess amino acids are
converted to urea.
· Raised levels of urea are
toxic.…read more

Page 3

Preview of page 3

Page 4

Preview of page 4

Here's a taster:

Kidneys 24/04/20
06
Kidneys are responsible for controlling ion, urea and
water content.
Blood in
Kidneys are made up of two
important tissues ­ BLOOD
VESSELS and TUBULES.…read more

Page 5

Preview of page 5

Page 6

Preview of page 6

Here's a taster:

Kidney function
24/04/20
06
A poisonous waste called _________ is made in the liver
from broken down _______ _______. The _________
remove urea from the blood. The kidneys also control the
amount of ________ and salts (_____) in the body. The
substances removed from the blood by the kidney is called
_______ which passes down the ________ to the
________ where it is temporarily stored.…read more

Page 7

Preview of page 7

Here's a taster:

Kidney structure
24/04/20
06…read more

Page 8

Preview of page 8

Here's a taster:

The Bowman's Capsule and Glomerelus.…read more

Page 9

Preview of page 9

Page 10

Preview of page 10

Here's a taster:

Kidneys 24/04/20
06
Kidneys work in 3 stages:
Blood vessel Tubule
1. ULTRAFILTRATION - Lots of water and
products of digestion are squeezed out of
the blood and into tubules under pressure.
2. SELECTIVE REABSORPTION ­ the blood
takes back the things it wants (e.g. glucose,
ions and water) even though this means going
against a concentration gradient.
3.…read more

Comments

No comments have yet been made

Similar Science resources:

See all Science resources »See all resources »