Lecture 19: Male Repro Sys (Exam 2) Flashcards
What are the parts of the male repro sys
- Testis
- Epididymis
- Deferent duct
- Penis
- Accessory genital glands
Describe the gubernaculum testi
- Pulls the testicle out of the abdominal wall & into the testicular sack
- Occurs around birth (1 to 2 days after)
- Widens & opens the inguinal canal
What is cryptorchidism
- “hidden testicle”
- Stuck in the abdominal cavity/inguinal canal
Label the picture showing the layers that the testicle will go through
Label the picture showing the layers covering the testicle in the scrotal sac
Describe the scrotum in equine
- More cranial to the perineal region
What are the layers of the scrotum from most superficial to deep
- Skin
- Dartos tunic
- Visceral vaginal tunic
- Dortos tunic (fibromuscular & SubQ layer of skin)
- External spermatic fascia
- Cremaster muscle & cremaster fascia
- Internal spermatic fascia
- Parietal vaginal tunic
Label the following:
Label the following:
What is found in the funiculus spermaticus (spermatic cord)
- Testicular a
- Testicular v (pampiniform plexus)
- Ductus deferens
- Deferens blood vessels
- Nerves & lymphatics
- Vaginal tunic
What is the difference the equine testis & epididymis
- The body is in the lateral view not medial
- The tail is a longer structure
How do spermatozoa travel through the testicle/epididymis
From the cranial pole -> head -> body -> tail -> Ductus deferens
Label the following
Describe the ductus deferens
- Go from the tail of the epididymis -> to spermatic cord -> dorsal into the abdomen & open into the very beginning of the urethra
Why is the colliculus seminalis important
- Has ejaculatory orifices that are the opening of the ductus deferens into the urethra
Describe the layers of the penile tissue
- Corpus cavernosum - root of the body all the way to the glans
- Corpus spongiosum - erectile tissue; surrounds the penile urethra from the root to the glans; makes the bulbus penis in the most caudal part of the penis
T/F: Equine have an os penis bone
False; they do not
Label the following:
What forms the root of the penis
The pilars of the penis & the bulb of the penis
What forms the pilars of the penis
The corpus cavernosus & ischiocavernous muscle
What erectile tissue surrounds the penis
- Albugineous tunic surround the cavernous body of the penis
- bulbospongious m surround the spongy body of the penis that surrounds the urethra
Label the following:
Describe the prepuce & glans of the penis
- The urethra has a urethral procces that is inside the fossa of the glands
- The prepucial ring
- The prepucial orifice (more external)
- External laminia lines prepuce (The inside of the prepucial cavity
- Internal lamina is the inside of the prepucial ring until the skin of the glans
Label the following:
Label the following
Why is it important to know about the lamina & skin of the glans
- B/c they clinically have to be cleaned before a stallion can mate with a mare
What is a difference in the accessory genital glands in equine
- They have 4 glands
- The prostate
- the Vesicular gland (storage of semenal fluid)
- Ampullary gland (ampulla of the ductus deferens; open near the colliculus seminalis)
- Bulbourethralis gland (same as seen in cats; open to the urethra)
Label the following:
What muscle covers the urethra in males in females
Urithralis m
