animal/dairy science 434 lec 3: male reproductive tract anatomy
TRANSCRIPT
![Page 1: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/1.jpg)
Animal/Dairy Science 434 Lec 3:
Male Reproductive Tract Anatomy
![Page 2: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/2.jpg)
Learning Objectives
• To be able to describe the male reproductive system in the bull.– Structure– Function
![Page 3: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/3.jpg)
Factory• 1-25 X 109 sperm/day• “Plant” must be air
conditioned
Factory• 1-25 X 109 sperm/day• “Plant” must be air
conditioned
Warehouse and Delivery• Storage 10-50 X 109 sperm• Sperm for 5-10 ejaculates• Smooth muscle contractions
upon sexual stimulation
Warehouse and Delivery• Storage 10-50 X 109 sperm• Sperm for 5-10 ejaculates• Smooth muscle contractions
upon sexual stimulation
Finishing School• Fluid Absorption• 8-25 X 109 sperm
– membrane changes– nuclear & flagellar
stabilization– motility, fertility– cytoplasmic droplet
translocation
Finishing School• Fluid Absorption• 8-25 X 109 sperm
– membrane changes– nuclear & flagellar
stabilization– motility, fertility– cytoplasmic droplet
translocationDelivery System
• Erection• Protrusion• Ejaculation
Delivery System• Erection• Protrusion• Ejaculation
Alterations & Packaging• Metabolic substrates• Surface coatings• Transport for sperm
Alterations & Packaging• Metabolic substrates• Surface coatings• Transport for sperm
Testis Epididymis
Tail of Epididymis
Accessory Sex Glands
Penis
![Page 4: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/4.jpg)
Bull Reproductive Tract
![Page 5: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/5.jpg)
Reproductive Organs of the
Bull
![Page 6: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/6.jpg)
Reproductive Organs of the
Bull
Testis
Primary Sex Organ
![Page 7: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/7.jpg)
Bull Testis
![Page 8: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/8.jpg)
Bull Tract
Scrotum
• Thermosensor• Radiator• Protective sac
![Page 9: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/9.jpg)
Bull Tract
Cross Section
Longitudinal Section
![Page 10: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/10.jpg)
Scrotal Cross Section
![Page 11: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/11.jpg)
Scrotal Longitudinal
Section
![Page 12: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/12.jpg)
Structure of the Testis
Rete Testis(within the mediastinum)
Tunica Albuginea
Seminiferous Tubule
![Page 13: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/13.jpg)
The Testis
Mediastinum
SeminiferousTubule
Rete Testis
![Page 14: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/14.jpg)
Structure of the Testis
Rete Testis(within the mediastinum)
Tunica Albuginea
Seminiferous Tubule
![Page 15: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/15.jpg)
Structure of the Testis
Vas Efferentia6-12 tubules
Caput Epididymis
Cauda Epididymis
CorpusEpididymis
Vas Deferens
Spermatic Cord
• Vasectomy
Secondary Sex Organs
![Page 16: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/16.jpg)
Structure of the Testis
Rete Testis(within the mediastinum)
Tunica Albuginea
Vas Efferentia6-12 tubules
Caput Epididymis
Cauda Epididymis
CorpusEpididymis
Seminiferous Tubule
Vas Deferens
Spermatic Cord
• Vasectomy
![Page 17: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/17.jpg)
PampiniformPlexus
TesticularArtery
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
![Page 18: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/18.jpg)
Testis Arterial Pulse
Spermatic
Artery
TesticularArtery
PampiniformPlexus
TesticularArtery
![Page 19: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/19.jpg)
Spermatic Chord
PampiniformPlexus
![Page 20: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/20.jpg)
Bull Tract
Tunica Dartos
![Page 21: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/21.jpg)
Contraction of the Tunica Dartos
Tunica Dartos
• Smooth muscle
• Androgen dependent(Testosterone)
Testis
![Page 22: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/22.jpg)
Bull Tract
Gubernaculum
![Page 23: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/23.jpg)
Bull Tract
Pelvic Genitalia
![Page 24: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/24.jpg)
Pelvic Genitalia of the Bull
Pelvic UrethraMuscle
![Page 25: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/25.jpg)
Bull
![Page 26: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/26.jpg)
Bulb of the Penis
![Page 27: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/27.jpg)
Reproductive Organs of the
Bull
Cowpers Gland
Caput Epididymis
Cauda EpididymisTestis
ScrotumGlansPenis
Bladder
Ampulla
Seminal Vesicles
ProstateRectum
Vas Deferens
Gubernaculum
SigmoidFlexure
Retractor Penis
Muscle
![Page 28: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/28.jpg)
Cross Section of Bull Penis
![Page 29: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/29.jpg)
Penis Cross Section
![Page 30: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/30.jpg)
Glans Penis of the Bull
Free Part of Penis
Glans PenisRaphe
Urethral Process
Prepuce (Retracted)
![Page 31: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/31.jpg)
Glans Penis
Free Part of Penis
Glans Penis RapheUrethral Process
Prepuce (Retracted)
![Page 32: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/32.jpg)
Arterial Supply
![Page 33: Animal/Dairy Science 434 Lec 3: Male Reproductive Tract Anatomy](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649f2f5503460f94c48a8b/html5/thumbnails/33.jpg)
Reproductive Organs of the
Bull
Cowpers Gland
Caput Epididymis
Cauda EpididymisTestis
ScrotumGlansPenis
Bladder
Ampulla
Seminal Vesicles
ProstateRectum
Vas Deferens
Gubernaculum
SigmoidFlexure
Retractor Penis
Muscle
Prepuce