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7 Μαρ 2024 · Anatomy, bony landmarks and function of the humerus. The deltoid tuberosity is a prominent rough triangular area located at approximately the mid-point of the lateral aspect of the shaft of the humerus. It serves as the distal attachment site for the deltoid muscle.
- Deltoid Muscle
Deltoid and acromial branches of thoracoacromial artery,...
- Deltoid Muscle
30 Οκτ 2023 · Deltoid and acromial branches of thoracoacromial artery, subscapular artery, anterior and posterior circumflex humeral arteries, deltoid branch of deep brachial artery. Function. Clavicular part: flexion and internal rotation of the arm, Acromial part: abduction of the arm beyond the initial 15°.
30 Ιαν 2024 · The deltoid distally attaches to the deltoid tuberosity of the humerus. Function. When the 3 parts of the deltoid contract simultaneously, the muscle can assist in abducting the arm past 15°. The deltoid cannot initiate abduction because it contracts parallel to the humeral axis.
11 Αυγ 2021 · It bears a roughened surface on the lateral side, known as the deltoid tuberosity, as the deltoid muscle gets attached there. The width of the bone gradually increases past the deltoid tuberosity, becoming double as it moves towards the elbow joint.
9 Οκτ 2022 · It is shaped like an inverted triangle and can be divided into three parts (anterior, middle and posterior). Attachments: Originates from the lateral third of the clavicle, the acromion and the spine of the scapula. It attaches to the deltoid tuberosity on the lateral aspect of the humerus. Innervation: Axillary nerve.
25 Οκτ 2024 · The deltoid has three distinct functions that correspond to the three bands of muscle fibers. Contraction of the anterior fibers flexes and medially rotates the arm by pulling the humerus towards the clavicle.
The deltoid tuberosity (deltoid tubercle) is the rough, triangular prominence found at the middle third of the anterolateral surface of the humerus. It provides an insertion site for the deltoid muscle.
