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Sep 27, 2024 · Borders. The overall 3D shape of the axilla looks slightly like a pyramid. It consists of four sides, an open apex and base: Apex – also known as the axillary inlet, it is formed by lateral border of the first rib, superior border of scapula, and the posterior border of the clavicle. Lateral wall – formed by intertubercular groove of the humerus.
- Humerus
The humerus is a long bone of the upper limb, which extends...
- Quadrangular Space
The quadrangular space is a passageway that allows...
- Humerus
Jul 24, 2023 · There are five anatomic borders of the axilla: the superior, anterior, posterior, lateral, and medial walls [1]. The medial wall is the serratus anterior and the first four ribs. The humerus, the coracobrachialis, and the short head of the biceps form the lateral wall. The pectoralis major and minor muscles make up the anterior wall.
Anatomically, the boundaries of the axilla are: superiorly: by the outer border of first rib, superior border of scapula, and posterior border of clavicle [4] medially: serratus anterior [5] and by the ribcage. anteriorly: by the pectoralis major, minor, [6] and subclavius [5]
There are five groups of axillary nodes present in the axilla including pectoral, lateral, posterior (subscapular), central, and apical. In addition to the neurovascular bundle, the axillary region also contains the short head of the Biceps Brachii muscle, coracobrachialis muscle, fascia and adipose tissue.
Now, let’s start with the boundaries of the axilla. The axilla is located at the junction of the arm and thorax, and connects superiorly to the neck, anteriorly to the pectoral region, inferolaterally to the upper limb, and inferomedially to the thoracic wall.
Dec 30, 2022 · The medial boundary of the axilla is made up of: Serratus anterior. the upper ribs and their intercostal muscles. The lateral boundary comprises the intertubercular groove on the medial part...
Oct 29, 2023 · The quadrangular space is a passageway that allows structures to travel between the axilla and posterior compartment of the upper arm. It contains the axillary nerve and posterior circumflex humeral artery (and accompanying vein) as they travel into the posterior upper arm.
