Assignment 13 (Equine) Flashcards
What is the most lateral splint bone?
MC IV
What are the buttons of the metacarpus and are they palpable?
distal most portion of the splint bones; they are palpable
What sesamoidean bone is absent in the horse?
Dorsal sesamoid
O, A, I, and bursa of CDE
O: lateral epicondyle of the humerus
I: extensor process of the distal phalanx & proximal and middle phalannx (dorsal surface)
A: extend carpal and digital joints; flexes the elbow joint
bursa: at the fetlock joint; between its tendon and the fetlock joint capsule
What other tendons join the CDE?
extensor tendons from the susensory ligament to its tendon
The CDE is invested with a ______ _____, bound by the ______ ______. What other tendon also fits this?
synovial sheath; extensor retinaculum
LDE
What groove of the radius does the CDE pass through?
the lateral groove
What is the action of LDE?
extends the carpal and digital joints (fetlock and pastern)
O, A, I, and bursa of SDF
O: medial epicondyle of the humerus
I: middle phalanx and proximal phalanx
A: flexes the carpal and digital joint (fetlock, pastern), extends the elbow joint
No bursa
What are the structures associated with SDF?
proximal check ligament, carpal synovial sheath, manica flexoria, palmar annular ligament of the fetlock, proximal digital annular ligament
O, A, I, and bursa of DDF
O: medial epicondyle of the humerus
I: distal phalanx
A: flexes the carpal and digital joints, extends the elbow joint
What are the heads of DDF?
humeral, radial, and ulnar heads
What is the carpal synovial sheath?
sheath formed by SDF around DDF as they pass through the carpal canal; bound by flexor retinaculum
What structures are associated with the DDF?
carpal synovial sheath, distal check ligament, distal digital annular ligament, navicular bursa
What structure is a direct contunuation of the palmar carpal ligament?
Distal check ligament of the DDF
What are the branches of the medial palmar artery?
medial palmar digital a.
lateral palmar digital a.
What does the median artery bifurcate into?
medial palmar a.
lateral palmar a.
The radial artery is a branch of what main artery?
median a.
Where is the metacarpal tuberosity located?
proximal end of MC III
The third metacarpal bone is the only weight bearing metacarpal bone. True or false?
True
Common name of MC III?
cannon bone
The proximal phalanx contains the solar foramen and solar canal. True or false?
False; the proximal phalanx is a roughened triangular area for dital sesamoiden ligaments.
The distal phalanx contains the solar foramen and solar canal. True or false?
True
What shaped is the proximal digital annular ligament?
x-shaped
Manica flexor is associated with what muscled tendon?
SDF
What are the branches of the medial and lateral palmar digital arteries?
arteries of the P1 (dorsal and palmar branches)
arteries of PII (dorsal and palmar branches)
arteries of PIII (dorsal branches)
What are the branches of the medial palmar nerve?
dorsal branch and medial palmar digital nerve
What are the branches of the lateral palmar nerve?
dorsal branch and lateral palmar digital nerve
What is the common name of the 4th MC bone?
splint bone
The solar canal is found on which phalanx?
Distal, P3
The proximal check ligament fuses with which muscle tendon?
SDF
Which muscle tendon forms the manica flexoria?
SDF
Name the heads of the DDF muscle.
Humeral, radial, ulnar heads
Just proximal to the fetlock joint, the ______ artery divides into the medial palmar digital artery and the lateral palmar digital artery.
Medial palmar artery
What nerve gives off the lateral palmar digital nerve directly?
lateral palmar nerve from the median nerve
