Lecture 12 2/16/24 Flashcards
Where does the omohyoideus m. run?
from the scapular fascia near the humeral joint to the basihyoid bone
What are the characteristics of the subclavius m.?
-runs from sternum to supraspinatus m.
-swings medial and lateral
Which accessory structure is associated with the infraspinatus m.?
infraspinous bursa
Why does the deltoideus m. only have a single head in the equine?
the scapula has no acromion, and therefore it does not divide the muscle belly into two
What is different about the coracobrachialis between the equine and the canine?
the muscle is much larger in the equine
What are the characteristics of the biceps brachii m. in the equine?
-tendon wraps around both sides of intermediate tubercle
-associated with intertubercular bursa
-lacertus fibrosus blends with extensor carpi radialis m.
How does the triceps brachii m. differ between the equine and the canine?
-equine only has 3 heads
-lack accessory head
What is unique about the anconeus m. in the equine?
often fuses with lateral head of triceps brachii m.
Which digit does the common digital extensor m. go to in the equine?
digit #3
What are the characteristics of the extensor carpi obliquus m.?
-from lateral border of radius to the base of metacarpal 2
-same as abductor pollicis longus in the canine
What are the characteristics of the SDF m. in the equine?
has a proximal check lig. only on thoracic limbs
-proximal check comes off distomedial radius to SDF
What are characteristics of the DDF m. in the equine?
-has a distal check lig.
-distal check originates at origin of interosseus m. and runs to the DDF tendon
How do the thoracic and pelvic limbs differ on cross-section?
-thoracic limb has an oval metacarpal 3 and more robust distal check lig.
-pelvic limb has round metatarsal 3 and less apparent distal check lig.
