Male anatomy of animals and comparison.pptx

Functional Anatomy of Male Reproductive System
To be able to describe the male reproductive system in the bull
Structure
Function
Suggested Reading:
Pathways to Pregnancy and Parturition. 2005. by P.L. Senger;
Chapter 03: Pages 44-77.

1. Functional Anatomy of Male Reproductive System Dr. Aman Ullah Zubair [DVM][RVMP]

2. Learning Objectives To be able to describe the male reproductive system in the bull Structure Function

3. Basic components of male reproductive system Testis Scrotum Spermatic cord (1.Testicular artery 2. Pampinifom plexus 3. Lymphatic vessels 4. Genital nerve 5. Vas deferens 6. Tunica vaginalis 7. Cremaster muscle) Excurrent duct system Accessory sex glands Penis and muscles for protrusion, erection & ejaculation

4. Factory 1-25 X 10 9 sperm/day “Plant” must be air conditioned Warehouse and Delivery Storage 10-50 X 10 9 sperm Sperm for 5-10 ejaculates Smooth muscle contractions upon sexual stimulation Finishing School Fluid Absorption 8-25 X 10 9 sperm membrane changes nuclear & flagellar stabilization motility, fertility cytoplasmic droplet translocation Delivery System Erection Protrusion Ejaculation Alterations & Packaging Metabolic substrates Surface coatings Transport for sperm Testis Epididymis Tail of Epididymis Accessory Sex Glands Penis

5. Bull Reproductive Tract

6. Reproductive Organs of the Bull

7. Reproductive Organs of the Bull Testis

8. Bull Testis Tunica Vaginalis parietal visceral Tunica Albuginea

9. Bull Tract Scrotum Thermosensor Radiator Protective sac

10. Bull Tract Cross Section Longitudinal Section

11. Scrotal Cross Section

12. Testis Testicular Parenchyma Mediastinum

13. Structure of the Testis Rete Testis (within the mediastinum ) Tunica Albuginea Seminiferous Tubule

14. The Testis Mediastinum Seminiferous Tubule Rete Testis

15. Structure of the Testis Rete Testis (within the mediastinum) Tunica Albuginea Seminiferous Tubule

16. Structure of the Testis Vas Efferentia 6-12 tubules Caput Epididymis Cauda Epididymis Corpus Epididymis Vas Deferens Spermatic Cord Vasectomy

17. Structure of the Testis Rete Testis (within the mediastinum) Tunica Albuginea Vas Efferentia 6-12 tubules Caput Epididymis Cauda Epididymis Corpus Epididymis Seminiferous Tubule Vas Deferens Spermatic Cord Vasectomy

18. Epididymis

19. Epididymis

20. Epididymis

21. Pampiniform Plexus Testicular Artery Spermatic Chord Pampiniform Plexus Counter Current Exchange 39°C - 34°C 70 ng T/ml - 4.8 ng T/ml Vascular, lymphatic and nerves Heat exchanger Houses cremaster muscle

22. Spermatic Chord Parietal Tunica Vaginalis Cremaster Muscle Vas Deferens Pampiniform Plexus

23. Bull Tract Tunica Dartos

24. Contraction of the Tunica Dartos Tunica Dartos Smooth muscle Androgen dependent (Testosterone) Testis

25. Bull Tract Gubernaculum

26. Bull Tract Pelvic Genitalia

27. Pelvic Genitalia of the Bull Pelvic Urethra Muscle

28. Bulb of the Penis

29. Cross Section of Bull Penis

30. Penis Cross Section Corpus Cavernosum Corpus Spongiosum Urethra

31. Glans Penis of the Bull Free Part of Penis Glans Penis Raphe Urethral Process Prepuce (Retracted)

32. Glans Penis Free Part of Penis Glans Penis Raphe Urethral Process Prepuce (Retracted)

33. Arterial Supply

34. Suggested Reading: Pathways to Pregnancy and Parturition. 2005. by P.L. Senger; Chapter 03: Pages 44-77.

35. Thank You