Avian MSK Flashcards
how does the atlas-axis structure in birds compare with mammals?
same
what is the notarium?
fused T1-T5
what is the shape of the scapula?
long and slender
what provides the solid skeletal link between the forelimb and the axial skeleton?
coracoid
what does the coracoid link together?
scapula to sternum
where is the site of attachment for pectoral muscles?
sternal keel
what is the synsacrum?
lumbar, sacral, and first few caudal vertebrae are fused (also includes fused bones on pelvis)
why is there no pubic symphysis in birds?
for egg to get through
true or false: there is no pubic symphysis in birds
true
what are the fused clavicles in a bird called?
furcula
label this image
A: notarium
B: synsacrum
C: pubis
D: fibula
E: tibiotarsus
F: tarsometatarsus
G: keeled sternum
H: coracoid
I: furcula
what powers the upstroke of the wings?
supracoracoideus
what powers the downstroke of the wings?
pectoralis
what bones make up the triossues canal?
scapula, coracoid, and clavicle
where does the supracoracoideus attach to?
triosseus canal
label muscles 1 and 2
which one is deep to the other?
1: pectoralis
2: supracoracoideus
supra deep to pec
what is pinioning?
surgically removing one pinion joint to prevent flight (used most commonly in waterfowl)
what muscle is affected during pinioning?
extensor carpi radialis
what joint geometric shape is the hock? what movement does it permit?
condylar
mostly F/E
quads are to mammals as ___ is to birds
femorotibialis
glutes are to mammals as ___ is to birds
iliotrochantericus
tensor fascia lata is to mammals as ___ is to birds
iliotibialis
