1. Cat Dissection II Respiratory Urinary/Reproductive Systems
Laboratory 9
Cat Dissection II Respiratory
Urinary/Reproductive Systems

2. Lab Schedule for Rest of Semester
Cat dissection labs
Dissection II (today)
Human Reproductive Systems (Ex. 50 and 51 in Hole)
Cat Urinary and Reproductive System (Ex. 58 and 59 in Hole)
Lab Make up (study) day for Mon/Wed classes
4/26, MW AM
4/28, MW PM
Lab Exam 2
5/7, 11:30 am

3. Organs of the Female Reproductive System
(In anteflexion) * * *
(Fallopian)
(Skene’s glands; lesser vestibular glands) * * * *
(Bartholin’s glands)
Figure from: Martini, Anatomy & Physiology, Prentice Hall, 2001

4. Ovary Attachments *
(Retracted) * * *
(Mesentery)

5. Ovaries and Their Attachments* * * * * *
Fold of peritoneum that attaches to sides and floor of pelvic cavity (limits side-to-side movement and rotation) *
Posterior view
Figure from: Martini, Anatomy & Physiology, Prentice Hall, 2001

6. Male Reproductive System* * * * * *
Figure from: Martini, Anatomy & Physiology, Prentice Hall, 2001

7. Male Reproductive Organs
posterior view * * * * * *

8. Penis

9. Male External Reproductive Organs
Figure from: Martini, Anatomy & Physiology, Prentice Hall, 2001

10. Structure of the Testis
Surrounded by the tunica albuginea – a tough, white, fibrous capsule that encloses each testicle
Septa divide each testicle into about 250 lobules
Each lobule contains 1-4 highly coiled seminiferous tubules that give rise to sperm
Interstitial cells lie in between seminiferous tubules and secrete male sex hormones
Rete Testis

11. Cat Urinary System EVERYONE should do the following dissections:
Visualize the kidneys and ureters in situ and their relationship to the peritoneum
Dissect away the peritoneum on one side, and isolate the kidneys and ureters, following the ureters as they enter the urinary bladder
In male cats, visualize the relationship between the ductus deferens and the ureter, being very careful not to tear or cut either one
Locate the renal artery and vein
Remove one kidney
Leave a length of renal artery/vein and ureter intact
Make a longitudinal section through the kidney
Visualize the cortex, medulla, renal pelvis, and upper ureter
Locate the urinary bladder
After draining the bladder if it was full, make a coronal section through the bladder and visualize the detrusor muscle, trigone, and entrance of the ureters

12. Cat Reproductive System
EVERYONE should do the following dissections:
Female cats
Locate the ovarian and suspensory ligaments
Locate the ovaries, ovarian (Fallopian) tubes
Locate and visualize the horn and body of uterus
Locate and visualize the vagina and its connection to the urethra.
Locate and visualize the urethral orifice, clitoris, and labia majora
Male cats
Visualize the relationship between the ureters and the vas deferens
Locate the spermatic cord
Dissect away the scrotum to reveal the testes
Dissect away as much tissue as possible to trace the path of the ductus deferens through the spermatic cord into the abdominal cavity
Locate the penis, and dissect away as much skin as possible to reveal its internal structure

13. Cat Dissection Lab Today
Do the following in Hole’s Lab Manual BEFORE you start the cat reproductive system dissection
Read Exercise 50 (Human Male)
Read Exercise 51 (Human Female)
Once you are generally familiar with the human reproductive structures
Exercises 58,59 (Cat urinary and reproductive systems)
Be sure to look at torso model and individual reproductive systems models for both male and female
Don’t rush your dissection!