Male Repro Flashcards
What is the inguinal canal?
Opening in the caudal part of the abdominal wall. Testes descend into scrotum here
Where does the inguinal canal extend?
Deep inguinal ring to the superficial inguinal ring
What forms the superficial inguinal ring?
Aponeurosis of the EAO where it splits into a pelvic insertion and an abdominal insertion
What are the boundaries of the deep inguinal ring?
Caudal: Inguinal ligament
Cranial: caudal free edge of IAO
Medial: lateral edge of prepubic tendon
Structures passing cranial to the inguinal ligament are..
Going through the inguinal canal
What structure are going through the inguinal canal in a stallion? (6)
- Vaginal ring
- Parietal vaginal tunic
- Spermatic cord
- Cremaster m
- Genitofemoral n
- External pudendal a
What is the parietal vaginal tunic?
Where the parietal peritoneum evaginates through the inguinal canal around the structures of the spermatic cord
What is the vaginal ring?
Ring of peritoneum around the spermatic cord as it leaves the abdominal cavity and passes through the deep inguinal ring
What structures pass through the inguinal canal in the mare?
- Genitofemoral n
- Branches of L2
- External pudendal artery
- NO vaginal process
What structures pass through the inguinal canal in the mare?
- Genitofemoral n
- Branches of L2
- External pudendal artery
- NO vaginal process
What is in the Clinical spermatic cord? (9)
- ductus deferens
- Mesoductus deferns
- Testicular artery
- Testicular veins
- Lymphatics of testis and epididymis
- Testicular nerve plexus
- Mesorchium
- Cremaster m
- Parietal vaginal tunic
What are the types of penis?
- Musculocavernous
2. Fibroelastic
Describe the musculocavernous penis?
- Blood filled spaces predominate over CT.
- No sigmoid flexure
- Flaccid when not erect
- Seen in stallions and carnivores
Describe the fibroelastic penis.
- Fibro-elastic trabeculae prodominate
- Sigmoid flexure
- Firm when not erect
- In pigs and ruminants
What is the corpus spongiosum?
Surrounds the urethra
What is the corpus spongiosum?
Surrounds the penile urethra and expands to form the glans and dorsal process of glans
What is the corpus cavernosum?
Provides rigidity
Where is the glans?
Caps the distal end of the corpus cavernosum
What is the dorsal process of the penis?
Caudal extension of the glans on the dorsal surface
What is the collum glandis?
Constriction of the middle of the glans
What is the corona glandis?
Circular edge that contains papillae
What is the fossa glandis?
Cranial indented surface of the glans
What is the dorsal recess of the fossa glandis?
Urethral sinus
What forms the prepuce?
External fold (prepuce proper) Internal fold (preputial fold)
What does the external fold of the prepuce consist of?
External and internal lamina that meet cranially at preputial orifice
What does the internal fold consist of?
Arises from the internal lamina of external fold and has an inner and out lamina that fold and meet cranially to form preputial ring
What is the preputial cavity?
Space between external and internal fold
What supplies blood to the penis?
- External pudendal artery
- gives off cranial artery of the penis
- Terminates as dorsal arter of the penis - Obturator artery
- middle artery of the penis
- Deep artery of the penis - Internal Pudendal artery
- Artery of the penis
- Artery of the bulb of the penis
What are the accessory Sex glands in the horse?
- Ampullary gland
- Vesicular gland
- Prostate gland
- Bulbourethral gland
What is the ampullary gland?
Terminal part of deferent duct is thickened by these glands. Form the ampulla of deferent duct
What is the vesicular gland?
(Seminal vesicle) Paired, elongated, pear shaped and hollow. Lie within genital fold
What is the prostate glands?
Retroperitoneal. Bilobed joined by isthmus, disseminate part is absent
What is the bulbourethral glands?
Paired club shaped tubular glands. Covered by bulboglandularis
