Lab 10
Anatomy of the Urinary System
Urinalysis
Dissection of the Urinary System of the Cat
Urinary System Anatomy and Histology
Identifying Urinary System Organs
Text Figure 26-3
Gross Internal Anatomy of the Pig or Sheep Kidney (use demonstration
kidney and the model of the kidney for this section) Text Figure 26-4
Studying Nephron Structure (try to distinguish tubules)
Table 26-1
COL collecting tubule
DT distal convoluted tubule
T thin segment of Loop of Henle
Urinalysis
Use Chemstrips and follow instructions below.
Dissection of the Urinary System of the Cat
Identifying Organs of the Urinary System
Name____________________________
Lab Section ________________
Turn in at the next regular class.
Dissection Questions
1. How did the appearance and location of the kidneys in the cat indicate that they are
retroperitoneal?
2. What is a urogenital sinus in an adult organism?
Is it present in adult female cats? ________
Is it normally present in adult human females? ________
3. What gland surrounds the cat's urethra? ____________________
What system does this gland belong to? ____________________
4. Contrast the location of the adrenal glands in the cat and the humans. 2 points
Label on this photomicrograph: outer layer of the glomerular capsule, glomerulus, and
tubules. Use a ruler and print the labels.
Urinalysis (Artificial Urine is Available in the Lab)
Test
Expected or
Normal
Value
Glucose
negative
Protein
negative
pH
4.5 - 8
Blood
(Hemoglobin)
negative
Ketones
negative
Bilirubin
negative
Nitrite
negative
Urobilinogen
0.1 – 1.0
Specific Gravity
1.015 – 1.025
Normal
Urine
Unknown Sample
Analysis:
Compare and contrast the normal and abnormal sample. In what specific ways is the
unknown sample different from the normal sample? 5 points
For the Lab Exam
Human anatomy - Identify on models
 afferent arteriole
 arcuate artery and
vein
 collecting duct
 cortex
 cortical radiate
artery
 cortical radiate vein
 distal convoluted
tubule
 efferent arteriole










glomerular capsule
glomerulus
interlobar artery
JG cells
loop of Henle
macula densa
major calyx
peritubular capillary
proximal convoluted
tubule
renal artery
Identify terms using figures in lab manual and text
 fibrous capsule
 renal artery
 kidney
 renal vein
 perirenal fat capsule
 ureter
Identify terms using figures in lab manual and text
 arcuate artery
 interlobar vein
 arcuate vein
 lobar artery
 capsule
 major calyx
 cortex
 medulla
 cortical radiate
 medullary pyramid
artery
 minor calyx
 cortical radiate vein
 papilla of pyramid
 interlobar arteries
 renal artery
Identify terms using figures in lab manual and text
 Collecting duct
 Glomerular
endothelium
 Ascending limb
 Loop of Henle
 Descending limb
 Parietal layer of
 Distal convoluted
glomerular capsule
tubule









renal capsule
renal cortex
renal medulla
renal papillae
renal pelvis
renal pyramids
renal vein
ureter
vasa recta


urethra
urinary bladder






renal column
renal pelvis
renal pyramid
renal vein
segmental artery
ureter


Proximal convoluted
tubule
Visceral layer of
glomerular capsule
Cat dissection (male and female):
 adrenal glands
 bladder
 kidneys



renal artery
renal vein
ureters

urethra
Kidney dissection:
 calyx
 capsule
 cortex




medullary region
renal pelvis
renal pyramid

ureter
Slides:
 kidney section
o tubules in general
o glomerulus, glomerular
capsule
Urinalysis
 Evaluation of dipstick

adrenal gland
o cortex
o medulla