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36 Cards in this Set
- Front
- Back
What does inguinus mean? Where is it located?
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Inguinis = groin (L)
Located between abdomen and thigh |
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What is and/or can be found coursing through the inguinal canal?
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External pudendal a. and v.
Genitofemoral n. Lymphatics Vaginal tunic (male) Vaginal process (bitch) Spermatic cord (male) |
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Where is the superficial inguinal ring found?
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Slit in the aponeurosis of the external abdominal oblique
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What are the boundaries of the deep inguinal ring?
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(Cranial boundary) - Caudal border of internal abdominal oblique
(Medial boundary) - lateral border of rectus abdominis (Caudal boundary) - inguinal ligament |
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Where is the inguinal ligament found?
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Between the tuber coxae and iliopubic eminence of the pelvis
(caudal border of internal abdominal oblique) |
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What are these structures (areas)? What do A + C comprise?
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A - Deep Inguinal Ring
B - Vascular lacuna C - Superficial inguinal ring A + C = inguinal canal |
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What courses through the vascular lacuna? What separates this from the inguinal canal?
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Femoral vessels
Inguinal ligament |
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Describe the branching of the aorta giving rise to the external pudendal a.
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Descending aorta
External iliac a. Femoral a. Deep femoral a. Pudendoepigastric trunk External pudendal a. |
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What provides the major blood supply to the cow's udder?
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External pudendal a.
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What comprises the genitofemoral n.?
What does it innervate? |
Ventral brs. of L3 and L4 spinal nn.
Motor to cremaster m. Sensory to inguinal region and proximal medial thigh. |
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T or F
Yo dawg! That bitch gots a vaginal process! |
True. Dogs (not dawgs) are thought to be the only females with a vaginal process.
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What membrane wraps around the testis? What are the layers of this membrane called?
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Vaginal tunic (vaginal process during development)
Visceral and parietal layers |
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What are these structures?
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A - Spermatic fascia
B - Parietal vaginal tunic C - Visceral vaginal tunic D - Cremaster m. E - Vaginal cavity |
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What comprises the clinical vaginal tunic?
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Spermatic fascia (from transversalis fascia)
Parietal vaginal tunic |
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What are these structures? What surrounds structure F?
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A - Parietal vaginal tunic
B - Ductus deferens C - Vaginal tunic (cut) D - Ligament of tail of epididymis E - Proper ligament of testis F - Testis (surrounded by visceral vaginal tunic) |
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What is the proximal boundary of the spermatic cord?
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Vaginal ring
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What components comprise the spermatic cord?
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Testicular a., v. and n.
Pampiniform plexus Ductus deferens Deferent a. and v. Internal cremaster m. (smooth) Mesofuniculum |
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What venous network keeps the testes cool?
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Pampiniform plexus
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Where do the R and L testicular vv. drain?
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R - caudal vena cava
L - left renal v. |
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T or F
The testicular aa. branch off of the internal iliac arteries. |
False fool!
These arteries branch off of the descending aorta! |
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Which vein or veins do the right and left testicular veins drain into?
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R. Testicular V. - caudal vena cava
L. Testicular V. - left renal v. |
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What structure carries sperm from the epididymis to the urethra?
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Ductus deferens (vas deferens)
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Name these structures in this transverse section of a spermatic cord.
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A - Mesofuniculum
B - Mesoductus deferens C - Mesorchium D - Cremaster m. |
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T or F
The cremaster m. is one of many structures coursing within the spermatic cord. |
False you silly!
The cremaster m. courses OUTSIDE of the vaginal tunic. |
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Compare/contrast the scrota of the dog and cat.
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Dog - scrotum is inguinal and has little hair
Cat - scrotum is perineal and has hair |
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What type of autonomic fibers comprise the testicular n.?
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Postganglionic sympathetic fibers from L4, 5, and 6 of sympathetic trunk
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T or F
The internal cremaster m. is one of many structures coursing within the spermatic cord. |
Yup. The internal cremaster is smooth muscle while the cremaster m. is skeletal.
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What is the perineal region?
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The region between the anus and scrotum.
As defined by Urban Dictionary: "The jagged or wavy line between your marble bag and balloon knot." |
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What tunics cover the testes?
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Tunica albuginea (fibrous capsule)
Visceral vaginal tunic |
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What is the function of the testes? The epididymis?
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Testis - sperm and hormone production
Epididymis - sperm storage and maturation |
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Name these structures (medial view)
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A - Cremaster m.
B - Pampiniform plexus C - Head of epididymis D - Testis E - Tail of epididymis |
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How is the head of the epididymis positioned in the dog? In the cat?
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Dog - craniodorsally
Cat - cranioventrally |
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What is the function of the tunica dartos?
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Helps to pull testes to body
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Name these structures
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A - Skin and tunica dartos
B - External spermatic fascia C - Internal spermatic fascia D - Parietal vaginal tunic E - Vaginal cavity F - Visceral vaginal tunic G - Tunica albuginea |
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What structure is responsible for the developmental descent of the testes? What kind of tissue is this structure comprised of?
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Gubernaculum testis
Condensation of mesenchymal tissue |
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What are the remnants of the gubernaculum in the male? How 'bout the female?
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Proper ligament of testis
Ligament of the tail of the epididymis (female) round ligament of the uterus |