Male Repro Flashcards
Testicles descend into the scrotum through what area?
The inguinal canal
What is the role of the epididymis?
Creates a concentrated sperm fraction
What is a vasectomy?
Cut ductus deferens so they are not able to reproduce but the secondary sex characteristics will remain intact
Name the layers of the scrotum from external to internal.
Skin (epidermis and dermis)
Tunica Dartos
External spermatic fascia
Internal Spermatic Fascia
Parietal vaginal tunic
Visceral vaginal tunic
Where does the cremaster muscle originate?
Caudal free border of the internal abdominal oblique m.
Where does the cremaster muscle insert?
Spermatic fascia and parietal vaginal tunic
What is the action of the cremaster muscle?
Acts to pull the testis closer to the body in response to the cremasteric reflex
What nerve innervates the cremaster muscle?
the genitofemoral nerve
List all of the components of the spermatic cord (7 structures).
Testicular artery
Testicular vein and pampiniform plexus
Testicular nerve
Testicular lymphatics
Ductus deferens
Deferent artery and vein (artery and vein of the ductus deferens)
Internal cremaster muscle (smooth muscle)
List the functions of the prostate (4 functions)
1) adds volume to ejaculate to provide a vehicle for sperm
2) provides a source of energy for sperm
3) acts as a buffer system for sperm by neutralizing the pH in the urine and the CO2 produced by sperm
4) Production of prostaglandins that cause smooth muscle to contract in the female repro tract
What are the two parts of the male canine urethra?
Pelvic part
Penile part (spongy)
What are the 4 erectile tissues of the penis?
Corpus cavernosum penis
Corpus spongiosum penis
Corpus spongiosum glandis of the bulbus penis
Corpus spongiosum glandis of the pars longa glandis
The cura is composed of what two parts and what muscle is it surrounded by?
Corpus cavernosum penis and tunica albuguinea
Ischiocavernosus m.
What muscle surrounds the bulb of the penis?
Bulbospongious m
What are the three muscles associated with the canine penis?
Bulbospongious muscle (around the bulb of the penis)
Ischiocavernosus muscle (From ischiatic tuberosities to the crura of the penis)
Retractory penis muscle (From the external anal sphincter to the gland, caudal and ventral position)
What is the name of the bone in the penis?
Os penis
What is the muscle that keeps the penis inside the prepuce?
Retractor penis muscle
Erection is a _____________ function and ejaculation is a _____________ function.
parasympathetic function
sympathetic function
The scrotum of the cat is in the ___________ position and the scrotum of the dog is in the ___________ position.
perineal position
inguinal position
What are the two accessory sex glands in a male cat?
Prostate
Bulbourethral glands
What is the purpose of the keratinized spines on the glans penis of the cat?
Cats are induced ovulators, the spines trigger ovulation once they are in the vagina of the female
Label the diagram
1) Glans
2) Body
3) Root
Label the diagram
1) Retractor penis mm.
2) Ischiocavernosus mm.
3) Bulbospongious m.
Label the diagram
1) Ventral perineal a. (And vein)
2) Artery is the bulb (and vein)
3) Deep a. Of the penis (and vein)
4) Dorsal a. Of the penis (and vein)
5) Artery of the penis (and vein)
6) Internal pudendal a. (And vein)
Label the diagram
Tunica albuguinea
Bulbous gland is
Os penis
Penile Urethra
Corpus spongiosum
Retractor penis muscle
