Lab 14 The Urinary System BIO202L
Student Name: Click here to enter text.
Access Code (located on the lid of your lab kit): Click here to enter text.
Pre-Lab Questions
1. What is the function of the ureter?
Ureter carries urine from the kidneys to the bladder.
2. Compare and contrast the male and female urethra.
Female urethra is shorter than male urethra. Male urethra carries urine and semen but
female urethra only carries urine. Male urethra is also more complex than the female
ones.
m
er as
co
eH w
3. Describe the two layers of the kidneys.
o.
rs e
Two layers of the kidneys are the renal cortex and the renal medulla. The renal cortex is
ou urc
the outermost layer of the kidney. This space contains blood vessels which connect to
the nephrons. The renal medulla is the innermost layer of the kidney, arranged into
pyramid-like shapes.
o
aC s
vi y re
Experiment 1: Kidney Filtration
Table 1: Solutions Present in Each Container Before 60 Minutes Submersion
ed d
Solution Dialysis Tubing Beaker
ar stu
Congo Red Yes No
is
Yellow Food Coloring Yes No
Th
Table 2: Solutions Present in Each Container After 60 Minutes Submersion
sh
Solution Dialysis Tubing Beaker
Congo Red Yes No
Yellow Food Coloring Yes Yes
This study source was downloaded by 100000828872084 from CourseHero.com on 09-03-2021 16:14:18 GMT -05:00
https://www.coursehero.com/file/59039206/Lab-14-Worksheet-DONEdocx/
, Lab 14 The Urinary System BIO202L
Post-Lab Questions
”1. What specific part of the kidney does the dialysis tubing represent? What is this part’s
function?”
Ureter and its function is to transport urine from the kidneys to the urinary bladder.
”2. What does the yellow food coloring represent at the end of the experiment? What does the
Congo Red represent?
Yellow food coloring represents urine. Congo red represents blood.
”3. Why is it important that the kidney filters the blood?
To remove waste and maintain the body’s fluid balance.
Experiment 2: Urinalysis
m
Table 3: Urine Test
er as
co
Test Normal Abnormal
eH w
o.
rs e Acidic Urine (below 4.5) - Diabetes, starvation, dehydration,
respiratory acidosis.
ou urc
pH 4.5 - 7.5
Alkaline Urine (above 7.5) - Kidney disease, kidney failure, urinary
tract infection, respiratory alkalosis.
o
aC s
Glucose None Glucose present (red or green color after test); diabetes mellitus.
vi y re
Protein None Protein present (violet color after test); kidney disease.
Yeast present (bubbles form after test); yeast infection in urinary
ed d
Yeast None
tract.
ar stu
Large amount of ketones present (sweet smell of urine); starvation,
Little or
Ketones prolonged vomiting, diabetes, hyperthyroidism, and other metabolic
None
disorders.
is
Th
Table 4: Simulated Urine pH Test
Simulated Urine Sample pH
sh
A 6.0
B 6.5
C 7.0
This study source was downloaded by 100000828872084 from CourseHero.com on 09-03-2021 16:14:18 GMT -05:00
https://www.coursehero.com/file/59039206/Lab-14-Worksheet-DONEdocx/
Student Name: Click here to enter text.
Access Code (located on the lid of your lab kit): Click here to enter text.
Pre-Lab Questions
1. What is the function of the ureter?
Ureter carries urine from the kidneys to the bladder.
2. Compare and contrast the male and female urethra.
Female urethra is shorter than male urethra. Male urethra carries urine and semen but
female urethra only carries urine. Male urethra is also more complex than the female
ones.
m
er as
co
eH w
3. Describe the two layers of the kidneys.
o.
rs e
Two layers of the kidneys are the renal cortex and the renal medulla. The renal cortex is
ou urc
the outermost layer of the kidney. This space contains blood vessels which connect to
the nephrons. The renal medulla is the innermost layer of the kidney, arranged into
pyramid-like shapes.
o
aC s
vi y re
Experiment 1: Kidney Filtration
Table 1: Solutions Present in Each Container Before 60 Minutes Submersion
ed d
Solution Dialysis Tubing Beaker
ar stu
Congo Red Yes No
is
Yellow Food Coloring Yes No
Th
Table 2: Solutions Present in Each Container After 60 Minutes Submersion
sh
Solution Dialysis Tubing Beaker
Congo Red Yes No
Yellow Food Coloring Yes Yes
This study source was downloaded by 100000828872084 from CourseHero.com on 09-03-2021 16:14:18 GMT -05:00
https://www.coursehero.com/file/59039206/Lab-14-Worksheet-DONEdocx/
, Lab 14 The Urinary System BIO202L
Post-Lab Questions
”1. What specific part of the kidney does the dialysis tubing represent? What is this part’s
function?”
Ureter and its function is to transport urine from the kidneys to the urinary bladder.
”2. What does the yellow food coloring represent at the end of the experiment? What does the
Congo Red represent?
Yellow food coloring represents urine. Congo red represents blood.
”3. Why is it important that the kidney filters the blood?
To remove waste and maintain the body’s fluid balance.
Experiment 2: Urinalysis
m
Table 3: Urine Test
er as
co
Test Normal Abnormal
eH w
o.
rs e Acidic Urine (below 4.5) - Diabetes, starvation, dehydration,
respiratory acidosis.
ou urc
pH 4.5 - 7.5
Alkaline Urine (above 7.5) - Kidney disease, kidney failure, urinary
tract infection, respiratory alkalosis.
o
aC s
Glucose None Glucose present (red or green color after test); diabetes mellitus.
vi y re
Protein None Protein present (violet color after test); kidney disease.
Yeast present (bubbles form after test); yeast infection in urinary
ed d
Yeast None
tract.
ar stu
Large amount of ketones present (sweet smell of urine); starvation,
Little or
Ketones prolonged vomiting, diabetes, hyperthyroidism, and other metabolic
None
disorders.
is
Th
Table 4: Simulated Urine pH Test
Simulated Urine Sample pH
sh
A 6.0
B 6.5
C 7.0
This study source was downloaded by 100000828872084 from CourseHero.com on 09-03-2021 16:14:18 GMT -05:00
https://www.coursehero.com/file/59039206/Lab-14-Worksheet-DONEdocx/
