Lab 14 The Urinary System BIO202L
Student Name: JOE BALBINA
Access Code (located on the lid of your lab kit): AC – U8VHJA.
Lab Report Format Expectations
Utilize college level grammar and professional formatting when completing this worksheet.
Submissions without proper formatting, all required photos or sufficient responses will be rejected. Pre-
lab Questions
1. What is the function of the ureter?
The urine is transported to the bladder from the renal pelvis. This is done by the ureter.
2. Compare and contrast the male and female urethra.
Females typically have a short urethra approximately 1.5 inch long while the males have a much
longer urethra approximately seven to eight inches. The males urethra transports both urine and
semen, while the females opens outside just anterior to the opening of the vagina.
3. Describe the two layers of the kidneys.
The filtering is conducted by the renal cortex. The renal cortex is the outer layer. The inner layer
is the renal medulla and each kidney is attached to a ureter.
,Lab 14 The Urinary System BIO202L
EXPERIMENT 1: KIDNEY FILTRATION
Introduction Questions
1. What specific part of the kidney does the dialysis tubing represent? What is this part’s function?
Water and ions travel through the tubing in the kidney also known as dialysis tubing.
2. What does the yellow food coloring represent at the end of the experiment? What does the
Congo Red represent?
Red signifies blood and the yellow is urine.
, Lab 14 The Urinary System BIO202L
Data and Observations
Record your observations as required by the experimental procedure in the table below.
Table 1: Solutions Present in Each Container Before 60 Minutes Submersion
Solution Dialysis Tubing Beaker
Congo Red Yes No
Yellow Food Coloring Yes No
Table 2: Solutions Present in Each Container After 60 Minutes Submersion
Solution Dialysis Tubing Beaker
Congo Red Yes No
Yellow Food Coloring No Yes
Results and Discussion
1. Why is it important that the kidney filters the blood? In your response, discuss what is being
removed and what is being selectively retained.
Without kidneys filtering the blood the body would get infections and buildup would occur
possibly leading to secondary issues including but not limited to death.
Student Name: JOE BALBINA
Access Code (located on the lid of your lab kit): AC – U8VHJA.
Lab Report Format Expectations
Utilize college level grammar and professional formatting when completing this worksheet.
Submissions without proper formatting, all required photos or sufficient responses will be rejected. Pre-
lab Questions
1. What is the function of the ureter?
The urine is transported to the bladder from the renal pelvis. This is done by the ureter.
2. Compare and contrast the male and female urethra.
Females typically have a short urethra approximately 1.5 inch long while the males have a much
longer urethra approximately seven to eight inches. The males urethra transports both urine and
semen, while the females opens outside just anterior to the opening of the vagina.
3. Describe the two layers of the kidneys.
The filtering is conducted by the renal cortex. The renal cortex is the outer layer. The inner layer
is the renal medulla and each kidney is attached to a ureter.
,Lab 14 The Urinary System BIO202L
EXPERIMENT 1: KIDNEY FILTRATION
Introduction Questions
1. What specific part of the kidney does the dialysis tubing represent? What is this part’s function?
Water and ions travel through the tubing in the kidney also known as dialysis tubing.
2. What does the yellow food coloring represent at the end of the experiment? What does the
Congo Red represent?
Red signifies blood and the yellow is urine.
, Lab 14 The Urinary System BIO202L
Data and Observations
Record your observations as required by the experimental procedure in the table below.
Table 1: Solutions Present in Each Container Before 60 Minutes Submersion
Solution Dialysis Tubing Beaker
Congo Red Yes No
Yellow Food Coloring Yes No
Table 2: Solutions Present in Each Container After 60 Minutes Submersion
Solution Dialysis Tubing Beaker
Congo Red Yes No
Yellow Food Coloring No Yes
Results and Discussion
1. Why is it important that the kidney filters the blood? In your response, discuss what is being
removed and what is being selectively retained.
Without kidneys filtering the blood the body would get infections and buildup would occur
possibly leading to secondary issues including but not limited to death.
