Shared Flashcard Set

Details

Extrinsic Muscles of Thoracic Limb
Attachments and Actions
16
Anatomy
Professional
07/11/2012

Additional Anatomy Flashcards

 


 

Cards

Term

Attachments for

Superficial pectoral m.

Definition

 

Origin: Sternum

 

Terminations:

-crest of greater tubercle

-cranial humeral border

Term

Actions of

Superficial Pectoral m.

Definition
Adduct thoracic limb
Term

Attachments for

deep pectoral m.

Definition

Origin: sternum

 

Terminations:

- greater, lesser tubercles of humerus

Term

Actions of

deep pectoral m.

Definition

- adduct thoracic limb

- draw thoracic limb caudally

 

Term

Attachments for

brachiocephalicus m.

Definition

Origin: clavicular intersection

 

Terminations:

- distal cranial humerus

- mastoid process of temporal bone

- dorsal midline of neck

Term

Actions of

brachiocephalicus m.

 

Definition

- draw thoracic limb cranially and/or

- depress and pull head and neck laterally

Term

Attachments for

omotransversarius m.

Definition

Origin: wings of atlas

 

Termination: distal spine of scapula

Term

Actions of

omotransversarius m.

Definition

- pull thoracic limb cranially, and/or

depress and pull head and neck laterally

Term

Attachments for

trapezius m.

Definition

Origins:

- cervical part: dorsal neck

- thoracic part: dorsal thorax

 

Termination: spine of scapula

Term

Actions of

trapezius m.

Definition
- Elevate thoracic limb
Term

Attachments for

rhomboideus m.

Definition

Origins:

- dorsal thorax

- dorsal neck

- occipital bone

 

Termination: dorsal border of scapula

Term

Action of

rhomboideus m.

Definition
- Elevate thoracic limb
Term

Attachments for

serratus ventralis m.

Definition

Origins:

- cervical vertebrae

-thoracic wall (ribs)

Termination: serrated face of scapula

Term

Actions of

serratus ventralis

Definition
- Support and/or elevate the trunk
Term

Attachments for

latissimus dorsi m.

 

Definition

Origin: thoracolumbar fascia

 

Termination: teres major tuberosity on medial side of proximal humerus

Term

Actions of

latissimus dorsi m.

Definition

- Draw thoracic limb caudally

-flex humeral joint when foot is free (ie. swimming)

- extend humeral joint when foot is on ground

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