Thorax and abdomen Muscles

Question 1

Brachiocephalicus

Answer 1

Between head and neck
Inserts on cranial aspect of humerus
Protracts forelimb

Question 2

Omotransversarius

Answer 2

From transverse processes of vertebrae
Inserts on scapula
Protracts forelimb

Question 3

Trapezius

Answer 3

Inserts on scapula spine

Rotates scapula

Question 4

Latissimus dorsi

Answer 4

Inserts on caudal aspect of humerus

Retracts forelimb

Question 5

Pectorals

Answer 5

Originates at cranial aspect of sternum
Inserts on medial aspect of humerus
Adducts forelimb

Question 6

Rhomboideus

Answer 6

Dorsal neck region

Inserts on dorsal border of scapula

Question 7

Scalenus

Answer 7

Stabilizes ribcage during inspiration

Question 8

Serratus dorsalis cranialis

Answer 8

Aids inspiration

Question 9

Serratus dorsalis caudalis

Answer 9

Aids expiration

Question 10

Serratus ventralis

Answer 10

Ventral parts of ribs to medial aspect of scapula

Question 11

Rectus abdominis

Answer 11

Xiphoid cartillage to prepubic tendon

Question 12

External abdominal oblique

Answer 12

Ribs and lumbodorsal fascia
To linea alba and prepubic tendon
Fibres run caudoventrally

Question 13

Internal abdominal oblique

Answer 13

Illiac crest and lumbodorsal fascia
To ribs and linea alba
Fibres run cranioventral

Question 14

Transverse abdominis

Answer 14

Lumbodorsal fascia and ribs
To linea alba
Fibres run dorsoventral