What does thoracodorsal artery supply?
The thoracodorsal artery supplies predominantly the latissimus dorsi muscle but also gives branches to the serratus anterior muscle, the axillary skin, the subscapular and teres major muscles.
What does superior thoracic artery supply?
The main function of this artery is to provide blood supply for the pectoralis major, pectoralis minor, subclavius and serratus anterior muscles. Additionally, it supplies the muscles and adjacent skin of the first two intercostal spaces.
What does the lateral thoracic artery supply?
The lateral thoracic artery supplies the axillary lymph nodes, serratus anterior, pectoralis major, pectoralis minor and subscapularis muscles. Additionally, it can provide blood supply to the breast in females.
What muscles does the axillary artery supply?
It follows the lateral margin of the muscle to the thoracic wall and supplies the serratus anterior and pectoral muscles, axillary lymph nodes, and subscapularis. It anastomoses with the internal thoracic, subscapular, and intercostal arteries and the pectoral branch of the thoracoacromial artery.
What does anterior circumflex humeral artery supply?
The anterior circumflex humeral artery provides part of the blood supply to the glenohumeral joint, teres major and minor, and deltoid muscles. The ascending branch provides supply to the head of the humerus 1.
What does the Musculophrenic artery supply?
The function of the musculophrenic artery is to provide blood supply to the muscles of the thoracic wall, together with the superior intercostal artery, branches from the thoracic part of the descending aorta, and the subcostal and superior thoracic arteries.
Where is the Suprascapular artery?
neckThe suprascapular artery is a branch of the thyrocervical trunk, which emerges from the first part of the subclavian artery. It runs across the front of your neck and behind the clavicle (collarbone) to supply blood to the muscles, skin, and bones in your chest and shoulder.
What does superior epigastric artery supply?
• Superior Epigastric Artery: Terminal branch of the internal mammary artery that supplies the upper central abdominal skin through the upper rectus muscle. • Thoracic and Lumbar Intercostal Arteries: Travel between the external and internal oblique muscles with direct lateral skin perforators.
What is the subscapular artery?
The subscapular artery is the largest branch of the axillary artery. It distributes blood to the muscles of the scapular and shoulder regions. The subscapular artery branches off posteriorly into two stems, approximately four centimeters from its origin; its first branch is the circumflex scapular artery and its second is the thoracodorsal artery. The circumflex scapular artery supplies the clavicle and scapula, collectively known as the pectoral girdle, which help connect the upper limbs to the axial skeleton. The axial skeleton consists of the skull, vertebral column, and the thoracic cage. The thoracodorsal artery supplies the latissimus dorsi, the broadest muscle of the back.
Which artery supplies the clavicle and scapula?
The circumflex scapular artery supplies the clavicle and scapula, collectively known as the pectoral girdle, which help connect the upper limbs to the axial skeleton.
Where does blood come from in the subscapularis muscle?
Blood supply to the subscapularis muscle comes from a series of branches of the subclavian artery; Axillary artery, a continuation of the subclavian artery. Subscapular artery, a branch of the axillary artery. Suprascapular artery, which branches off the subclavian artery via the thyrocervical trunk.
Where is the subscapularis muscle located?
Reading time: 6 minutes. Subscapularis muscle (Musculus subscapularis) Subscapularis is a triangular shoulder muscle located in the subscapular fossa of scapula. Attaching between the scapula and the proximal humerus, it is one of the four muscles of the rotator cuff, along with supraspinatus, ...
What is the lower triangular space?
Lower triangular space (triangular interval), here the subscapularis makes up the anterior border . Teres major, long head of triceps brachii and the humerus comprise the posterior, medial and lateral borders of this space, respectively. This space serves as a passageway for the radial nerve and deep brachial artery.
What is the posterior surface of the muscle?
The posterior surface of the muscle’s tendon is blended with the fibrous capsule of the glenohumeral joint, and is continuous with the tendons of supraspinatus, infraspinatus, teres minor and long head of triceps brachii. These tendons together comprise the rotator capsule around the shoulder joint.
Which muscle is responsible for concavity compression?
Along with the rest of the rotator cuff muscles, subscapularis contributes to the creation of concavity compression, a stabilizing mechanism in which compression of the humerus into the concavity of glenoid fossa prevents its dislocation by translating forces.
Where does the subscapular bursa connect to the shoulder?
The large subscapular bursa that communicates with the shoulder joint separates the subscapularis tendon from the neck of the scapula. The tendon then inserts to the lesser tubercle of humerus and anterior part of the articular capsule of the glenohumeral joint.
Which muscle is the only medial rotator cuff?
Function. The subscapularis muscle is the only medial (internal) rotator of all the rotator cuff muscles. Due to its unique axis of pull, from the proximal humerus to the costal scapular surface, subscapularis medially rotates ( internal rotation) the humeral head within the glenoid fossa.
Where is the subscapular artery located?
The subscapular artery, the largest branch of the axillary artery, arises from the third part of the axillary artery 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, ...
Which artery is the largest branch of the axillary artery?
The scapular and circumflex arteries. The subscapular artery, the largest branch of the axillary artery, arises from the third part of the axillary artery 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, ...
INTRODUCTION
The axillary artery has a distal part. The largest branch of this part is known as the subscapular artery (SA) which proceeds inferiorly on the wall of the posterior axillary. It follows the subscapularis muscle exactly on the lateral margin. Two terminal branches are the end part of the subscapular artery (SA).
ORIGIN
In addition to serving as the largest branch, the subscapular artery is also the most variable part of the axillary artery. This branch usually arises from the third part of the axillary artery at the inferior border of the subscapularis muscle.
BRANCHES
The subscapular artery (SA) consists of two large terminal branches including the thoracodorsal artery and circumflex scapular artery. The function of these two branches is as follows:
SUPPLY
The subscapular artery is part of the axillary artery which has a large diameter and has two terminal branches. Due to these characteristics, the subscapular artery is responsible for supplying many of the muscles in the shoulder area. The muscles supplied by the subscapular artery are as follows:
ANATOMICAL VARIANTS
The subscapular artery is part of the axillary artery which is quite stable from an anatomical point of view, with more than 80% showing its basic anatomy. Anatomical variations of the subscapular artery that may occur include:
FUNCTION
The subscapular artery has the main function as a provider of blood supply to the shoulders, thoracic wall muscles, skin, and upper extremities. The muscles supplied by the subscapular artery have been mentioned above.
ABNORMALITIES
Some anatomical and physiological abnormalities case reports of the subscapular artery are as follows:
What is the arterial supply of the hand?
The hand has a rich arterial supply with many anastomoses between vessels. This allows the hand to be perfused even when under high resistance to flow (such as when grasping or applying pressure). Arterial supply to the hand begins with the ulnar and radial arteries.
Which arteries supply deeper structures in the forearm?
Also gives rise to the anterior and posterior interosseous arteries, which supply deeper structures in the forearm. These two arteries anastomose in the hand by forming two arches – the superficial palmar arch, and the deep palmar arch. Fig 5 – Arterial supply to the forearm via the radial and ulnar arteries.
What is the first part of the subclavian artery?
First part – origin of the subclavian artery to the medial border of the anterior scalene. Second part – posterior to the anterior scalene. Third part – lateral border of anterior scalene to the lateral border of the first rib.
What is an axillary artery aneurysm?
An axillary artery aneurysm is a dilation of the vessel to more than twice its original size. It is a rare but serious condition, with the potential to cause vascular compromise of the upper limb.
Which artery supplies the triceps brachii?
It is the main supply of blood for the arm. Immediately distal to the teres major, the brachial artery gives rise to the profunda brachii (deep artery), which travels with the radial nerve in the radial groove of the humerus and supplies structures in the posterior aspect of the upper arm (e.g. triceps brachii).
Which arteries are renamed the brachial artery?
At the lower border of the teres major muscle, the axillary artery is renamed the brachial artery.
Which artery supplies a branch to the thumb, the index finger and to the superficial palmar arch?
The radial artery supplies a branch to the thumb, the index finger and to the superficial palmar arch – it then continues as the deep palmar arch. As a result, two arterial arches are formed: Superficial palmar arch – located anteriorly to the flexor tendons in the hand and deep to the palmar aponeurosis.
