-
Rectus abdominus
- (ventral)
- Pulls sternum and rubs caudally causing flexion of the trunk.
Homology in shark: Hypaxial musculature
-
Tranversus costarum
- (ventral)
- Pulls the ribs cranially.
Homology in shark: Hypaxial musculature
-
Serratus ventralis
- (ventral)
- Draws the scapulae toward the thoracic wall, stabilizing the scapula.
Homology in shark: Hypaxial musculature
-
Scalenes
- (ventral)
- Bends the neck and puls ribs cranially.
Homology in shark: Hypaxial musculature
-
Subcapularis
- (ventral)
- Adducts the humerus.
Homology in shark: Pectoral musculature.
-
Coracobrachialis
- (ventral)
- Adducts the humerus.
Homology in shark: Pectoral fin adductor
-
Splenius
- (ventral)
- Together left and right elevate or extend the head. Individually, each flexes the head laterally.
Homology in shark: Epaxial musculature
-
Rhomboideus
- (dorsal)
- Adducts scapula.
Homology in shark: Hypaxial musculature
-
Rhomboideus capitis
- (dorsal)
- Rotates and pulls scapula cranially.
Homology in shark: Hypaxial musculature
-
Infraspinatus
- (dorsal)
- Rotates the humerus laterally.
HIS: Pectoral fin adductor
-
Supraspinatus
- (dorsal)
- Protracts the humerus.
HIS: Pectoral fin adductor
-
Teres major
- (dorsal)
- Retracts humerus and rotates it medially.
HIS: Pectoral fin abductor
-
Teres minor
- (dorsal)
- Helps rotate the humerus laterally.
HIS: Pectoral fin abductor
-
Serratus dorsalis
- (dorsal)
- Anterior portion draws he ribs cranially, posterior portion draws the ribs caudally.
HIS: Hypaxial musculature
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