What Role Does Water Play in Our Lives?
e.g. - Serves as a solvent for many substances - Participate in reactions in the body - Maintains blood volume - Carriers nutrients and waste - Maintains the structure of molecules
(e.g. proteins) - Aids in the regulation of temperature - Acts as a lubricant and cushion in joints around spinal cord, brain and fetus
A Nephron, one of the kidney’s many functioning units
Renal Artery
Renal Vein
Kidney
Ureter
Bladder
Pelvis
How the body regulates blood volume
Kidneys
Adrenal glandssecreteAldosterone
Kidneys retain sodium and water to increase blood volume
Blood vessels constrictraising blood pressure
Hypothalmus respondsto high salt conc. by
stimulating the pituitary gland
Pituitary gland releasesantidiuretic hormone (ADH)
When blood flow islow,kidneys
produce renin
Activates Angiotensin
Brain
Cortical bone is dense, ivory-like
bone that forms the exterior shell.
Trabecular bone is the lacy network of calcium-containing
crystals that fills the interior.
©2001 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license.
Loss of height in a woman caused by
Osteoporosis.
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