Pelvic Anatomy Flashcards
What is the paritoneal pouch located between the rectum and the genitals?
Rectogenital pouch
What is the peritoneal pouch located between the genitals and the bladder?
Vesiculogenital pouch
What is the peritoneal pouch located between the pubic bone and the bladder?
Pubovesicular pouch
What are the 2 poles of the kidney?
Cranial and caudal poles
What are the 2 capsules of the kidney called?
Renal capsule (connective tissue)
Adipose capsule (fat)
What word describes something covered on one side by peritoneum (like the kidney)
Retroperitoneal
Where is the right kidney located?
T16, T17, T18, L1
Where is the left kidney located?
T18, L1, L2, L3
What is the topographical region where vessels and ureter enter and leave kidney?
Renal hilus
What is the indented space on the kidney where vessels are located (usually filled with fat)?
Renal sinus
What is the funnel shaped structure to the start of the ureter?
Renal pelvis
What is something unique that is added to the horse’s urine in the pelvis?
Mucous
What is the extension of the pelvis towards the poles of a horse called?
Terminal recess
What is the ridge of tissue in the kidney that drains directly into the renal pelvis?
Renal crest
What 2 spots in the horse urinary system is mucous added?
Renal pelvis
Proximal 1/3 of ureter
Where is the ureter contained in the male horse?
In the genital fold
Where is the ureter located in the female horse?
Broad ligament
What are the 3 ligaments that hold the bladder in place?
Left lateral ligament
Right lateral ligament
Median ligament
What are the 3 parts of the bladder?
Apex
Body
Neck (junction with urethra)
What is the topographical region of the bladder located on the dorsal wall and formed by the left and right ureter as well as the internal urethral orifice?
Trigone
What are the 2 urethral orifices?
internal urethral orifice
external urethral orifice
What is the vestige of fetal connection of urachus of bladder to belly button
Patent urachus
Where is the adrenal gland located relative to each kidney?
Medial
How can you tell the difference between a lymph node and an adrenal gland?
Adrenal gland has a cortex and medulla
What is a singular hip bone?
os coxae
What are multiple hip bones (2 hip bones)
Ossa coxarum
What is 1 bony pelvis formed from?
Fusion of sacrum, 3 vertebrae, and 2 hip bones
What is the slope of the pelvis defined by?
The slope between the ischiadic tuberosity and the tuber coxae
What is found along the slope of the pelvis?
The greater trochanter of the femur
What is the dorsal boundary of the pelvic inlet?
Sacrum
What is the ventral boundary of the pelvic inlet?
Cranial edge of pubis
What is the lateral boundary of the pelvic inlet?
Arcuate line of ileum
What is the dorsal to ventral diameter of the pelvic inlet called?
Conjugate diameter
What is the lateral measurement of the pelvic inlet called?
Transverse diameter
What is the dorsal boundary of the pelvic outlet?
Caudal vertebrae 1-3
What is the ventral boundary of the pelvic outlet?
Ischial arch
What is the lateral boundary of the pelvic outlet?
Sacrosciatic ligament (very different in horse, much wider)
What fused vertebrae form the sacrum?
S1-S5
What is the prominence from S1 of the sacrum called?
Promontory
What does the fusion of the transverse processes of the vertebrae form?
Lateral sacral crest
(Median sacral crest may be present in old horses)
What is the hollow space inside the sacrum?
Sacral canal
What is the ligament from the tuber sacrale to lateral sacral crest?
Sacroiliac ligament
What is the ligament that passes from the lateral sacral crest to ischiadic spine and tuberosity?
Sacrosciatic ligament
What notch is located cranial to ischiadic spine?
Greater sciatic notch
What notch is located caudal to ischiadic spine?
Lesser sciatic notch
What passes through the greater sciatic notch?
Sciatic nerve
Cranial gluteal artery
What passes through the lesser sciatic notch?
Internal obturator
What is the dorsal superficial boundary of the perineum?
Root of the tail
What is the dorsal deep boundary of the perineum?
End of the sacrum
What is the ventral superficial perineum?
Scrotum or base of mammary gland
What is the ventral deep boundary of the perineum?
Ischial arch
What is the common term for perineal body?
Taint
What is the dorsal nerve of the penis/clitoris?
Pudendal nerve
What nerve innervate the anal sphincter and skin of perineum?
Caudal rectal nerve
What are the 3 nerves that the sciatic nerve gives off?
Cranial gluteal
Caudal gluteal
Caudocutaneous femoral
What is the flow of blood at the end of the aorta?
Deep circumflex iliac
External iliac
Internal iliac
What is the external iliac?
L4-L5
What is the last branch of the aorta?
Internal iliac
Where is the internal iliac artery?
L5-L6
What does the internal iliac split into?
Internal pudendal and caudal gluteal
What are the 4 layers of the scrotum?
1)Skin
2)Dartos
3) Fascia
4) Parietal vaginal tunic
What is the indentation at the midline of the scrotum called?
Raphe
What is the orientation of the testes?
Horizontally
What is the capsule of fibrous tissue and smooth muscle around the testis?
Tunica albuginea
What is the head of the epididymis for the horse?
Cranial pole
What are the contents of the spermatic cord?
TNAVL
ductus deferens
Visceral vaginal tunic
What does the ligament of the tail of the epididymis connect to?
Parietal vaginal tunic
What does the proper ligament of the testis attach to?
Connects to the the testis
What is the “stock” of the testis?
Mesofuniculus
What is the visceral tunic that attaches to the deferent ductus?
Mesoductus
What is the visceral vaginal tunic that surrounds the TNAVL?
Mesorchium
What are the 3 parts to the equine penis?
Root, body, and glans
What is the erectile tissue found in the left and right crus as well as the body?
Corpus cavernosum penis
What is th muscle that covers each crus of the penis?
Ischiocavernosus muscle
What is the tissue directly around the urethra?
Corpus spongiusum penis
What is the muscle that covers the corpus spongiosum penis?
Bulbospongiosus muscle
What is the glandular tissue located inside the glans and its dorsal process?
Corpus spongiusum glandis
What is the process that goes out the tip of the penis?
Urethral process
What is the “rim” of the glans?
Corona glandis
What is the space around the terminal part of the urethra?
Fossa glandis
What is the external prepuce opening?
Preputial opening
What is the internal preputial opening?
Preputial ring
What is the order of accessory sex gland felt on rectal palpation?
Bulbourethral gland
Prostate gland
Seminal vesicle
Ampulla
Where does the prostate gland open?
Lateral to colliculus seminalis
Where does the seminal vesicles and ampulla open?
Open ON colliculus seminalis (aka ejaculatory orifice)
What muscle covers the pelvic portion of the urethra?
Urethralis
What muscle covers the Bulbourethral gland?
Bulboglandularis
What muscle covers the corpus spongiosum penis?
Bulbospongiosus
What muscle covers the crus of the penis?
Ischiocavernosus
What is the band of tissue running along the midline of the penis?
Retractor penis
What is the triple blood supply of the penis?
Internal pudendal artery
Obturator artery
External pudendal artery
What are the branches of the internal pudendal artery?
Artery of the penis>Artery of the bulb of the penis>Dorsal artery of the penis
What are the branches of the obturator artery
Middle artery of the penis>Deep artery of the penis and a branch to form dorsal artery of penis
What are the branches of the external pudendal artery
Cranial artery of the penis>Bifurcates to form anastomotic branches of the dorsal artery of the penis
What are the 3 anatomical branches that contribute to the dorsal artery of the penis?
Artery of the penis, middle artery of the penis, and cranial artery of the penis
What is the sympathetic innervation to the penis/clitoris?
Hypogastic nerve
What is the parasympathetic innervation to the penis/clitoris?
Pelvic nerve
What is the lymphatic drainage for the penis and scrotum?
Superficial inguinal lymph nodes
What is the lymphatic drainage for testes and epididymis?
Medial iliac lymph nodes (orchitis)
What is the lymphatic drainage for the stifle?
Lateral iliac lymph nodes (gonitis)
What part of the broad ligament suspends the uterus?
Me some trim
What part of the broad ligament suspends the ovary?
Mesovarium
What part of the broad ligament suspends the uterine tube?
Mesosalpinx
Where is the ovary typographically located?
Half way between last rib and tuber coxae
What is the concave surface of ovary?
Ovulation fossa (eggs are released)
What is the convex surface of the ovary of the horse?
Ovarian hilus
What is the pocket surrounding equine ovary?
Ovarian bursa
What is the ligament that connects the ovary to the uterus?
Proper ligament of the ovary
What ligament is NOT in the equine species?
Suspensory ligament
What is the main blood supply to the ovary?
Ovarian artery
What artery supplies the uterus?
Uterine branch of the ovarian artery
What is the funnel shaped opening of the uterine tube?
Infundibulum
What are the foot processes off of the uterine tube?
Fimbrea
What is the entrance into the uterine tube?
Abdominal ostium
What is the exit out of the uterine tube into the uterine horn?
Uterine ostium
What is the entrance into the cervix?
Internal uterine orifice
What is the exit out of the cervical into the vagina?
External uterine orifice
What is the primary supply to the uterus?
Uterine artery
What is the space surrounding the vaginal portion of the cervix?
Fornix
What divides the vagina and the vestibule?
The hymen (transverse fold)
What are the glands in the vestibule to lubricate?
Vestibular glands (major and minor)
What is the fold over the clitoral fossa?
Frenular fold
What is the rapid in and out motion of the clitoris during estrus called?
Vulvar winking
What is the groove the runs down the midline of the equine mammary gland?
Intermammary groove
How many milk glands are present in the horse?
4
How many openings are on each teat of the horse?
2
What drains the parenchyma
Lactiforis ducts
What is the milk storage unit called?
Lactiforis sinus
Where is the right kidney located on the bovine?
L1-L3
Where is the left kidney located on the bovine?
THE RIGHT SIDE! L3-L5
Is there a renal pelvis in a ruminant?
NO (Caylx)
What is the outpouch at the external urethral orifice?
Suburethral diverticulum
What is the function of the protractor muscle of the bovine penis?
Cover the glans of the penis
What is the function of the retractor function for the bovine penis?
Expose the glans
What is unique about the bovine penis body?
Sigmoid flexure
What is the penis surrounded by?
Tunica albuginea
What is unique about the urethral process of the small ruminant?
It is very long
What is the single supply to the bovine penis? (Compared to triple supply to horse)
Internal iliac
What is the orientation of the bovine testicals?
Vertical
What is the muscle that covers the Bulbourethral gland in the bovine?
Bulbospongiosus
What are the 2 parts of the prostate in the bovine?
Body and disseminate parts
(ONLY DISSEMINATE PART IN SMALL RUMINANT)
What is the ovary shaped like in the bovine?
Small, bean
Wha this the ligament between each horn of the uterus?
Intercornual ligament
What is much larger in the cow, the horns or the body?
The horns
What are the bumps on the uterine horn mucosa?
Maternal caruncles (oval)
Crater-like in small ruminant
What is the tissue that actually produces milk?
Parenchyma
What is the function of the suspensory apparatus of the bovine?
Support weight of the udder
What is the principal blood supply for the bovine mammary gland?
External pudendal artery
What are the 3 routes of venous return from the udder in the bovine?
External pudendal vein
Milk (subcutaneous abdominal) vein
Dorsal labial vein
Where does the milk vein pass through?
Milk well
What is the lymphatic drainage of the udder?
Supramammary lymph node
What nerve innervate the parenchyma of the udder?
Genitofemoral
What nerve innervate the cutaneous cranial part of the udder?
L1 and L2
What nerve innervate the cutaneous middle part of the udder?
Genitofemoral nerve
What nerve innervate the cutaneous caudal part of the udder?
Mammary branch of pudendal nerve
How many milk producing units does a small ruminant have?
2
What direction do nerves travel as they leave the spinal foramina?
Caudally
What spinal nerve segment is T13 at transverse process of L1?
Caustoabdominal nerve
What spinal nerve segment is L1 at transverse process of L2?
Ileohypogastric nerve
What nerve is from spinal nerve L2 and passes over L4 transverse process?
(NO NERVES OVER L3 transverse process)
Ileoinguinal nerve
Where is rumenotomy done?
1/2 way between last rib and tuber coxae on LEFT SIDE
Where does the primary oocyte arrest at prenatal?
End of first meiotic prophase
How many polar bodies are released during fertilization?
2 polar bodies
What hormone induces myometrial contractions?
PGF2alpha from increased cortisol and thus estradiol
What is the “water breaking”
Chorioallantois which causes lubrication
What is Furgusson’s Reflex
Pressure on cervix causing massive dump of oxytocin into blood