Exam 3 Written (Cross) Flashcards
Extrinsic vs. Intrinsic Mm
extrinsic: attach forelimb to trunk
intrinsic: attach only within limb
What is Brachial Plexus Avulsion
excessive pulling on thoracic limb
disrupts nerves originating from plexus
How does brachial plexus avulsion present?
cannot extend muscle
“dangling” limb
Elbow Dysplasia
instability or detachment of anconeal process –> inflammation / OA
What patients have elbow dysplasia most commonly?
large breed dogs
Two Types of Angular Limb Deformities
Carpal valgus
Carpal varus
Carpal valgus
angulation away from midline
Carpal varus
angulation toward midline
Orthogonal Views
see 3D structure in 2D, need several views for full pic
Radiopacities (in order)
Air
Fat
Water/soft tissue
Bone
Metal
Is metal radiolucent or radiopaque?
And is it black or white?
radiopaque
white
Summation
bone over bone = more radiopaque
Conus Arteriosus
cone-shaped part of right ventricle that leads to pulmonary trunk
Foramen Ovale
opening in fetal heart between atria | bypasses lungs
What occurs if foramen ovale doesn’t close after birth?
less oxygenated blood to aorta = growth/exercise problems
Ligamentum Arteriosum
CT remnant of ductus arteriosus in adult
Which valve = tricuspid? Which is bicuspid?
tricuspid = right AV
bicuspid = left AV
What are the 3 cusps of right AV valve?
parietal
septal
angular
What are the 2 cusps of the left AV valve?
parietal + septal
How many valvules are in the pulmonary & aortic valves?
3 semilunar valvules
Define non-congruent joint
two opposing joints not contouring each other
What is an example of a non-congruent joint in pelvic limb?
stifle (femoral condyles articulate with tibial condyles)
What is present to compensate for the non-congruent joint of the stifle?
menisci
Triceps Surae
soleus M + gastrocnemius M in cat
Coxofemoral Luxation
dislocated hip joint
cause: hit by car, person, horse
What directional location is a coxofemoral luxation displaced?
craniodorsal displacement
How does coxofemoral luxation present?
unilateral NWB lameness
limb toward median (carried adducted)
What are consequences of not treating coxofemoral luxation?
lose joint capsule
lose ligament of femoral head
lose transverse acetabular ligament
What occurs if coxofemoral luxation is not treated immediately?
continued soft tissue damage
degeneration of cartilage
Patellar Luxation
displacement of patella from trochlear sulcus
In what animals is medial patellar luxation most common?
small breed dogs
In what animals is lateral patellar luxation most common?
large breed dogs
Two Treatment Options for Patellar Luxation
Trochlear Wedge Resection Sx
Build up Quadriceps M
Hip Dysplasia
malformed hip joint
osteofites cause extra bone growth –> advanced arthritis
large breed common
Osteochondrosis Dissecans (OCD)
loss of blood supply to joint –> cell death
What type of animals does OCD affect?
young, fast-growing animals
Perineum
part of body wall that covers pelvic outlet
Perineal region
visible external part of perineum
Perineal Body (Male)
area between anal canal + bulb of penis
Perineal Body (Female)
area between anus + vulva
What occurs if there is a loss of neural function to the muscles?
muscle atrophy
leg/joint collapse
What is the patella known for?
largest sesamoid bone in body
What type of joint is the stifle?
Non-congruent joint
Fabellae
small sesamoid bones of gastrocnemius M
Name two ligaments of the stifle prone to rupture
Cranial & caudal cruciate ligament
What is the “drawer sign”? And what is it accompanied by?
= CCL tear
accompanied by meniscus tear
What kind of joint is the Coxofemoral Joint?
ball & socket
Laborum
rim of fibrocartilage in acetabulum to deepen socket
Sacrotuberous Ligament
stiff structure (NOT present in cat)
part of coxofemoral joint
Function of Transverse Acetabular Ligament
keep head of femur from popping out
Name the 4 tarsus joints
Tarsocrural joint
Proximal intertarsal joint
Distal intertarsal joint
Tarsometatarsal joint
Which tarsal joint had the most mobility?
Tarsocrural joint
Innervated by Obturator N
Adductor M
Gracilis M
Pectineus M
External Obturator M
Innervated by Femoral N
Quadriceps femoris M
Sartorius M
Iliopsoas M
Innervated by Caudal Rectal N
external anal sphincter
Innervated by Perineal Nn
Mm of penis OR vestible/vulva
Which nerve is sensory to penis/clitoris?
Dorsal N of penis
Dorsal N of clitoris
Innervated by Caudal Gluteal N
superficial gluteal M
Innervated by Cranial Gluteal N
middle gluteal
deep gluteal
piriformis
tensor fasciae latae
Innervated by Sciatic N
Biceps femoris
Semitendinosus
Semimembranosus
Gemelli
Quadratus femoris
Innervated by Tibial N
Gastrocnemius
Superficial digital flexor
Deep digital flexor
Innervated by Common Fibular N
Cranial tibial N
Long digital extensor N
Fibularis longus
List Mm that Extend Hip
Adductor
Gracilis
Piriformis
Gluteal Mm
Biceps femoris
Semitendinosus
Semimembranosus
Quadratus femoris
Mm that Flex Hip
Quadriceps femoris
Sartorius
Iliopsoas
Tensor fasciae latae
Mm that Extend Stifle
Quadriceps femoris
Tensor fasciae latae
Biceps femoris
Mm that Flex Stifle
Gracilis
Semitendinosus
Gastrocnemius
Mm that Adduct Limb
Adductor
Gracilis
Pectineus
Muscle that Abducts hip
All gluteal Mm
Mm that Extend Hock
Gracilis
Biceps femoris
Semitendinosus
Mm that rotate limb medially
popliteus
middle gluteal
deep gluteal
piriformis
Mm that rotate limb laterally
obturators
gemelli
quadratus femoris
Muscle that rotates paw lateral
cranial tibial
Muscle that rotates paw medial
fibularis longus
Muscle that flexes digits
deep digital flexor
Muscle that extends digits
long digital extensor
What is the tarsus composed of?
soft tissue between leg and metatarsals
Rows of tarsal bones
Proximal Row (central tarsal bone)
Distal row (tarsal bone 1,2,3)
Large 4th tarsal bone
Collateral Ligaments
ligament that provides medial + lateral stability of joints
on either side of hinge joint
Congenital urinary incontinence
involuntary uriantion from birth
Trigone
where urethral orifices open
(male- orifices of ductus deferens)
Renal Lobe
renal pyramid + renal cortex above it
Renal Pelvis
expanded mucosa of ureter in kidney (beginning of ureter)
Renal Sinus
fat-filled cavity around renal pelvis
Pelvis recess
diverticula extending into renal parenchyma
Hilus
where arteries/nerves of kidney leave
Nephron
functional unit of kidney
What are the two capsules of the kidney?
fibrous capsule + adipose capsule
What kind of muscle is in the ureter?
smooth muscle
What process allows urine movement?
peristalsis
Which muscle contracts/empties bladder?
Detrusor M
Do SNS/PSNS inhibit/allow bladder contraction?
SNS: inhibit contraction
PSNS: allow contraction
What nerve controls physiological sphincter at the neck of the urinary bladder?
Hypogastric N
What nerve is PSNS innervation of the urinary system?
Pelvic Nn
What nerve is somatic of the bladder?
Pudendal N
What muscle is used for voluntary control of the bladder and surrounds urethra?
Urethralis M
Where does the urethral tubercle open on floor of vestibule (female)?
Vestibulovaginal junction
Root of penis
two crura + bulb of penis
Bulb of penis
caudal expansion of corpus spongiosum penis
What muscle covers the bulb of the penis
Bulbospongiosus M
What are the crura of the penis?
proximal end of each corpus cavernosum attached to the ischiatic arch
What muscle covers the crura of the penis?
Ischiocavernosus M
What is the core of the crura made of?
Corpus Cavernosum Penis
What covers the testicles before descending?
Visceral Peritoneum by the kidneys
Gubernaculum testis
mesenchymal tissue from testis through inguinal canal that attach to testicles
shrinks/pulls testis during development
What structure do the testicles pass through?
deep inguinal ring
What tissue starts after the testicles descend through the deep inguinal ring?
parietal peritoneum
What do the parietal & visceral peritoneum turn into after passing through the deep inguinal ring?
parietal + vaginal tunics
Vagina Cavity
space between parietal + vaginal tunic
Function of Semiferous tubules
where sperm production occurs
Tunica albuginea
thick capsule around testes
Testicular bursa
space between epididymis & testes
Prostate gland
R & L lobes with a dense capsule
bulk around urethra
Superficial inguinal ring
slit in aponeurosis of external abdominal oblique M
What are the components of the superficial inguinal ring?
2 crura + 2 commissures
What are the two directional terms for location of the commissures of the superficial inguinal ring?
craniolateral & caudomedial
Deep inguinal ring
caudal border of internal abdominal oblique M
Orientation of deep inguinal ring
obliqued oriented dorsoventrally & lateromedially
Inguinal Ligament (Arcus Inguinalis)
thickened caudal portion of aponeurosis of external abdominal oblique M
Inguinal canal
space between inguinal rings
Priapism
persistent abnormal erection
Phimosis
construction of preputial ostium
Paraphimosis
inability to retract penis due to swelling or preputial constriction
Cryptorchidism
testes don’t descend
Clinical Significance of Cryptorchidism
NO sperm production but produce testosterone
Visceral Vaginal Tunic
directly adhered to testes
Parietal Vaginal Tunic
outer later surrounding testes
Open castration vs. Closed
open: penetrated parietal vaginal tunic (open to peritoneal cavity)
closed: not penetrated parietal tunic
Which castration (open/closed) has a greater chance for infection?
open
List Mm associated with penis
Ischiocavernosus M
Bulbospongiosus M
Ischiourethralis M
Retractor Penis M
List accessory sex glands of dog
prostate
ampullary glands
List accessory sex glands of cat
prostate
small bulbourethral glands