Download The Components of the Urinary System

Urinary System
Functions of the Urinary System
 elimination of _______________________________________
o ______________________________________ (byproducts of
chemical reactions that are no longer useful such as ammonia,
urea, uric acid, creatinine)
 control the volume and composition of body fluids
o __________________________________________________
 blood volume is closely associated with the salt balance
of the body (____________________________________
______________________________________________
_____________________________________________)
 the kidneys are involved in regulating blood pressure and
also maintain appropriate levels of certain ions in the
blood
o __________________________________________________
 the kidneys monitor and control blood pH through the
excretion and reabsorption of certain ions
 ________________________________________________________
o principal job is the removal of urea and the regulation of water
in the bloodstream
Biology 12 - Human Biology - Urinary System
Paul Plut, Jessica Wan
1
Waste Products
 ______________________
o end product of __________________ _________________
_____________________________in body cells
o water soluble
o primary end product of the urinary system
o _______________________________________
 ________________________
o end product of the deamination of amino groups
o ______________________________________
o converted to urea in the liver in land mammals
 _________________________
o end product from creatinine phosphate in muscle metabolism
Structures of the Urinary System
 kidneys
o reddish brown organs
o ______________________________________ (4 inches long,
2 inches wide, 1 inch thick in an average sized adult)
o located on either side of the spinal column, anchored against the
dorsal (back) body wall by connective tissue
o ___________________________________________________
___________________________________________________
 renal vein
Biology 12 - Human Biology - Urinary System
Paul Plut, Jessica Wan
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o carries blood from the kidneys back to the heart
 renal artery
o carries blood into the kidney
 ureter
o muscular tube
o ___________________________________________________
___________________________________________________
 urinary bladder
o urine storage, can hold up to 600 to 1000 mL of urine
o ___________________________________________
 stretch receptors indicate when it is full, signal notifies
the brain resulting in the desire to urinate
 urethra
o tube that connects the urinary bladder to the outside
Biology 12 - Human Biology - Urinary System
Paul Plut, Jessica Wan
3
The Components of the Urinary System
Biology 12 - Human Biology - Urinary System
Paul Plut, Jessica Wan
4
Urinary System Concept Map
After this introductory lesson to the urinary system, working in groups of 4, you and your
group mates will create a concept map as an overview of the system. A list of terms is
given that you must incorporate into your assignment but feel free to add terms as
needed. You will be required to write in words on the connecting lines, the relationship
that exists between the two concepts that you linked together. A single concept can have
many other concepts linked to it. Be sure to write down the relationship on the line for
full marks. You will be given post-it notes to use as nodes where you write down the
main concepts. This way you can move the nodes around until you are satisfied with
their position and the corresponding links. After you have completed your concept map,
all groups members must participate in a short 2-minute presentation describing your
concept map and the reasoning behind the grouping of the concepts as seen on the map.
Refer to the rubric on the back of this handout for marking guidelines and to make sure
you’ve fulfilled all the criteria.
The terms that must be included are:
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excretion
kidneys
metabolic wastes
nitrogenous wastes
ammonia
urea
creatinine
renal vein
renal artery
ureter
urinary bladder
urethra
urine
Biology 12 - Human Biology - Urinary System
Paul Plut, Jessica Wan
5