5c - Muscular System; Forelimb Flashcards
extrinsic foreleg muscles function
attach leg to body and move whole limb
intrinsic foreleg muscle function
move particular joints e.g. shoulder, elbow
what is syncarnosis
when a limb is attached through muscle only and not skeleton
name 4 extrinsic muscles of forelimb
pectorals
brachiocephalicus
trapezium
latissimus dorsi
pectorals origin and insertion
origin: sternum
insertion: humerus
pectorals function
adduct foreleg
pectorals location
under surface - ventral
brachiocephalicus origin and insertion
origin neck and skull
insertion humerus
brachiocephalicus function
protract forelimb
brachiocephalicus location
from neck running parallel to humerus
trapezius origin and insertion
origin spine
insertion scapula
trapezius function
lifts leg to allow movement
trapezius location
next to neck along spine to scapula
latissimus dorsi origin and insertion
origin spine (thoracic and lumbar)
insertion humerus
latissimus dorsi function
retract forelimb
latissimus dorsi location
next to trapezius along dorsal aspect of back
name 4 intrinsic muscles of forelimb
infraspinatus
supraspinatus
triceps brachii
biceps brachii
infraspinatus origin and insertion
origin scapula
insertion humerus
infraspinatus function
shoulder flexion
infraspinatus location
below the spine of scapula
supraspinatus origin and insertion
origin scapula
insertion humerus
supraspinatus function
shoulder extension
supraspinatus location
above the spine of scapula
triceps brachii origin and insertion
origin humerus and scapula
insertion ulna
triceps brachii function
elbow extension
triceps brachii location
behind humerus
biceps brachii origin and insertion
origin scapula
insertion radius and ulna
biceps brachii function
elbow flexion
biceps brachii location
on top of humerus
