Comparative anatomy Flashcards
(13 cards)
What anatomical difference in equine makes them more prone to damage to the suprascapular nerve?
Lack of an acromion
Which species is directly known for being selectively bred for predominant “hooks” (tuber coxae) and “pins” (tuber ischii)?
Bovine (dairy cattle)
What is a major anatomical difference between the humerus of a horse and that of a dog?
The greater tubercle of the horse is more prominent and divided
Which structure on the femur is present in canine but not in bovine?
The third tochanter
Which species’ femur is structurally similar to the ovine femur?
bovine
In which species are the radius and ulna completely fused except at the proximal portion?
Equine
Which species has the most flexible syndesmosis of the antibrachium?
feline
In which species is the fibula considered vestigial?
vestigial = Remaining in a form that is small or imperfectly developed and not able to function
cattle
Which species has fused 3rd and 4th metacarpal/ metatarsal bones, forming a large weight-bearing ‘cannon bone’?
Cattle
In horses, the cannon bone is a fusion of only metacarpal 3
While the cannon bone of a horse is MCIII or MTIII, in a cow it is a fused MCIII+IV or MTIII+IV
In pigs, which digits and corresponding metacarpal/metatarsal bones are well developed and bear weight?
Digits 3 and 4
Which bones make up the splint bones of the equine hindlimb?
Metacarpals/metatarsals 2 & 4
What are phalanges 1, 2, & 3 commonly called in a horse?
- 1 = long pastern bone
- 2 = short pastern bone
- 3 = coffin bone
What are the different stances of canine and equine?
- canine = digitigrade
- equine = unguligrade
