Thoracic muscles AHS1 Flashcards
(49 cards)
What are the main bony landmarks?
Cranial and caudal angle of the scapula Olecranon (front leg) Costal arch Tuber coxae
What shows the dorsal boundary of the scapula?
A line from the tuber coxae to the caudal border of the scapula
What is the thin muscle that covers the trunk region?
Cutaneous trunci
What is the reflex that causes the skin twitch?
Panniculus reflex
What is the layer that covers the muscles called?
Deep fascia/epimysium
What are the septa?
They divide muscles into functional groups, extend deep into the muscles and can carry infection
What are the 2 parts that the brachiocephalicus is divided into?
Cleidocephalicus and cleidobrachialis
What is the function of brachiocephalicus?
Protraction of the foreleg
Where does omotransversarius insert?
On the shoulder
Where does omotransversarius originate?
The transverse processes of the cranial cervical vertebrae
What is the function of omotransversarius?
Protraction of the forelimb
Where does trapezius originate?
The median/midline of the neck
Where does trapezius insert?
On the scapula
What is the function of trapezius?
Raises the scapula to protract the forelimb
Where does the latissimus dorsi originate?
In the deep fascia
Where does the latissimus dorsi insert?
On the caudal aspect of the humorous
What is the function of latissimus dorsi?
Retraction
Where do the pectoral muscles originate?
The sturnum
Where do the pectoral muscles insert?
On the medial aspect of the humorous
What is the function of the pectoral muscles?
Adduction of the forelimb
Sling to hold the body up
Where does serratus ventralis originate?
On the ventral parts of the ribs
Where does serratus ventralis insert?
On the medial aspect of the scapula
What is the function of serratus ventralis?
Known as a girdle muscle - acts as a sling to hold the body between the forelimbs
Not a part of respiration - is an extrinsic muscle
What are the respiratory muscles?
Serratus dorsalis
Scalenous
