Circumflex scapular artery
Encyclopedia
The circumflex scapular artery
(scapular circumflex artery, dorsalis scapulae artery) is a branch of the subscapular artery
and part of the scapular anastomoses.
It curves around the axillary border of the scapula, traveling through the anatomical "Triangular space
" made up of the Teres minor superiorally, the Teres major inferiorally, and the long head of the Triceps laterally.
It enters the infraspinatous fossa
under cover of the Teres minor, and anastomoses with the transverse scapular artery (suprascapular) and the descending branch of the transverse cervical (a.k.a. dorsal scapular artery
).
In addition to these, small branches are distributed to the back part of the Deltoideus and the long head of the Triceps brachii, anastomosing with an ascending branch of the profunda brachii
.
Artery
Arteries are blood vessels that carry blood away from the heart. This blood is normally oxygenated, exceptions made for the pulmonary and umbilical arteries....
(scapular circumflex artery, dorsalis scapulae artery) is a branch of the subscapular artery
Subscapular artery
The subscapular artery, the largest branch of the axillary artery, arises at the lower border of the Subscapularis muscle, which it follows to the inferior angle of the scapula, where it anastomoses with the lateral thoracic and intercostal arteries and with the descending branch of the transverse...
and part of the scapular anastomoses.
It curves around the axillary border of the scapula, traveling through the anatomical "Triangular space
Triangular space
The triangular space is an axillary space....
" made up of the Teres minor superiorally, the Teres major inferiorally, and the long head of the Triceps laterally.
It enters the infraspinatous fossa
Infraspinatous fossa
The infraspinatous fossa of the scapula is much larger than the supraspinatous fossa; toward its vertebral margin a shallow concavity is seen at its upper part; its center presents a prominent convexity, while near the axillary border is a deep groove which runs from the upper toward the lower...
under cover of the Teres minor, and anastomoses with the transverse scapular artery (suprascapular) and the descending branch of the transverse cervical (a.k.a. dorsal scapular artery
Dorsal scapular artery
The dorsal scapular artery is a blood vessel which supplies thelevator scapulae, rhomboids, and trapezius.-Origin:...
).
Branches
In its course it gives off two branches:- one (infrascapular) enters the subscapular fossaSubscapular fossaThe costal or ventral surface of the scapula presents a broad concavity, the subscapular fossa.It provides an attachment for the subscapularis muscle.-External links: - "Scapular Region: Scapula "...
beneath the Subscapularis, which it supplies, anastomosing with the transverse scapular artery and the descending branch of the transverse cervical. - the other is continued along the axillary border of the scapula, between the Teres major and minor, and at the dorsal surface of the inferior angle anastomosis with the descending branch of the transverse cervical (dorsal scapular).
In addition to these, small branches are distributed to the back part of the Deltoideus and the long head of the Triceps brachii, anastomosing with an ascending branch of the profunda brachii
Profunda brachii
The arteria profunda brachii is a large vessel which arises from the lateral and posterior part of the brachial artery, just below the lower border of the Teres major.-Course:...
.