What does thoracoacromial artery mean?
The thoracoacromial artery, also referred to as the thoracoacromial trunk, is a short artery that arises from the axillary artery. The thoracoacromial artery supplies the pectoralis major and minor muscles, a part of the deltoid muscle and the skin overlying the clavipectoral fascia.
Where is the pectoral artery?
The pectoral artery is one of the dominant branches of the thoracoacromial artery. It pierces the clavipectoral fascia medial to the tendon of the pectoralis minor muscle and emerges at the groove between the clavicular and sternocostal heads of the pectoralis major muscle.
What does thoracoacromial artery supply?
Through its four main branches, the thoracoacromial artery contributes arterial supply to the pectoralis major and minor muscles, the anterior part of the deltoid muscle, and dermal sensation overlying the clavipectoral fascia 2.
What are the branches of axillary artery?
It has three branches that are variable in their order: the subscapular trunk, the anterior humeral circumflex artery, and the posterior humeral circumflex artery.
Where is superior thoracic artery?
The superior thoracic artery (highest thoracic artery) is a small artery located near the armpit in humans. It normally arises from the first division of the axillary artery, but may arise from the thoracoacromial artery, itself a branch of the second division of the axillary artery.
What does the circumflex scapular artery supply?
The circumflex scapular artery is the largest terminal branch of the subscapular artery. They contribute to the blood supply of three muscles (deltoid, teres minor, triceps brachii), glenohumeral joint and two small cutaneous areas partially overlying the scapula.
Where is the pectoralis minor?
The pectoralis minor is triangular in shape and is located under the pectoralis major, and both form the anterior wall of the axilla. The shortened , tight muscle can be easily palpated there.
What is the blood supply to the pectoralis major?
The pectoralis major muscle therefore derives its blood supply from the pectoral branch of the thoraco-acromial artery, the lateral thoraci: artery and to a lesser extent the superior thoracic artery(ies) (Fig. 2).
Where is clavicular branch of thoracoacromial artery?
Surgical anatomy It arises below the junction between the middle and lateral thirds of the clavicle. It appears as a large vessel originating from the anterior surface of the axillary artery, whose origin is hidden by the cranial edge of the pectoralis minor muscle.
What is the axillary artery?
The axillary artery is a large muscular vessel that travels through the axilla. It is responsible for carrying oxygen-rich blood to the upper limb, as well as to parts of the musculocutaneous system of the scapula and upper lateral thorax.
Is axillary anterior or posterior?
The axillary apex is the interval between the superior border of the scapula, the posterior border of the clavicle, and the external border of the first rib. The pectoralis major and the latissimus dorsi form the major anterior and posterior folds, respectively, of the axilla.
What is superior thorax?
The thoracic inlet, also known as the superior thoracic aperture, refers to the opening at the top of the thoracic cavity.
What is the thoracoacromial artery?
The thoracoacromial artery ( a. thoracoacromialis; acromiothoracic artery; thoracic axis) is a short trunk, which arises from the forepart of the axillary artery.
Where does the acromial artery branch off the coracoid process?
The acromial branch runs lateralward over the coracoid process and under the Deltoideus, to which it gives branches; it then pierces that muscle and ends on the acromion in an arterial network formed by branches from the transverse scapular, thoracoacromial, and posterior humeral circumflex arteries.
What is another name for the thoracic artery?
Origin, axillary; distribution, muscles and skin of shoulder and upper chest; anastomoses, branches of superior thoracic, internal thoracic, lateral thoracic, posterior and anterior circumflex humeral, and suprascapular. Synonym (s): arteria thoracoacromialis [TA] , acromiothoracic artery.