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Most important processes
FiltrationAbsorptionDistributionExcretion
Urin
ary
syst
em
Kidneys
Aorta and renal artery
Vena cava inferior and renal vein
Urine tube - Ureter
Bladder
Urethra
Bean shapedApproximately the size of a fist, and protected by a fatty layer.Situated in the abdominal cavity, under the diaphragm, either side of the spine.Right is slightly lower than left.
Func
tion
of k
idne
ys Excrete waste products
Regulate water in the blood and tissue fluid.
Regulate acid and mineral salts to ensure the body does not have a surplus.
Filtration Re-absorption
Formation of Urine
Blood is filtered and waste products (urea) are removed from the blood.
Water, salts and other substances are re-absorbed. The water that is not re-absorbed, keeps the waste products in solution to be excreted later.
Blood is filtered and waste products (urea) are removed from the blood.
Ureter
• The two tubes that transport urine from the kidneys to the bladder
Bladder
• The bladder stores urine before it is excreted after a period of time.
Urethra• Transports urine from the
bladder out of the body.
Title slide: http://www.drugrehabfl.net/wp-content/uploads/2012/11/kidneys.jpg Slide 3: http://www.pharmaworld.pk/products/gallery/gal919_t65.jpg Slide 4: http://www.apsubiology.org/anatomy/2020/2020_Exam_Reviews/Exam_4/kidney%20anatomy.jpg Slide 6: Nephron: https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcS1iYFwxyh0hPL-NgaamLymga2jRKGe57lsWNlnhd-zGresPWBt Glomeruli: https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcRE8Q7l-FSHxARzZRcuwrJn0npzdKOX5F_JemfaL8G2AkAkhRb2 Urinalysis: https://classconnection.s3.amazonaws.com/588/flashcards/2797588/jpg/tripphos-144F2341C152AF08538.jpg Slide 7: http://www.amharicdrama.com/wp-content/uploads/2015/06/princ_rm_photo_of_urinary_tract_infection-300x335.jpg
TEXT: du Plessis et al: DocScientia Textbook and Workbook Grade 9 Natural Sciences CAPS; [email protected]
