Orgin & Insertions Flashcards
External Oblique
O: ribs & thoracolumbar fascia
I: linea alba
Action: compress abdomen
Internal Oblique
O: pelvis & thoracolumbar fascia
I: linea alba
Action: compress abdomen
Transversus abdominis
O: ribs, ilium, vertebra
I: linea alba
Action: compress abdomen
Rectus abdominis
O: pubis
I: sternum & costal cartilage
Action: compress abdomen & flexes trunk
Latissimus Dorsi
O: thoracolumbar fascia & vertebra
I: humerus
Action: elevates and draws humerus caudally
Serratus Ventralis
O: ribs
I: scapula
Action: draws scapula ventrally & cranially
Scalenus
O: ribs
I: vertebra
Action: flexes neck & draws ribs anteriorly
External intercostal
O: ribs
I: rib
Action: elevates ribs
Internal intercostals
O: rib
I: rib
Action: depresses ribs
Rhomboideus capitas
O: skull
I: scapula
Action: draws scapula cranially
Supraspinatus
O: supraspinous fossa
I: humerus
Action: extends humerus
Infraspinatus
O: infraspinous fossa
I: humerus
Action: rotates humerus
Teres Major
O: scapula
I: humerus
Action: draws humerus medially
Subscapularis
O: subscapular fossa
I: humerus
Action: draws humerus medially
Acromiodeltoid
O: scapula
I: humerus
A: flexes and rotates humerus
Levator scapulae ventralis
O: atlas and skull
I: scapula
A: draws scapula cranially
Spinotrapezium
O: vertebra
I: scapula
A: draws scapula dorsally and caudually
Acromiotrapezium
O: vertebra
I: scapula
A: draws scapula dorsally and medially
Clavotrapezium
O: skull
I: clavicle & clavobrachialias
A: draws humerus cranially
Digastric
O: skull
I: mandible
A: depresses lower jaw
Sternomastoid
O: sternum
I: mastoid process
A: rotates head
Masseter
O: zygomatic arch
I: mandible
A: elevates lower jaw
Pectoantebrachialis
O: sternum
I: fascia of forearm
A: adducts and rotates forelimbs
Pectoralis major
O: sternum
I: humerus
A: abducts and rotates forelimbs
