Aug 31, 2022 · The pectoralis minor muscle is one of the most superficial muscles on the anterior aspect of the chest or thoracic wall, located deep only to the pectoralis major muscle. It is one of the anterior axioappendicular (thoracoappendicular) muscles, together with the pectoralis major, subclavius and serratus anterior .

The pectoralis minor is triangular in shape and is located under the pectoralis major, and both form the anterior wall of the axilla. It originates from the margins of the third to fifth ribs adjacent to the costochondral junction.

Pectoralis minor muscle (/ ˌpɛktəˈrælɪs ˈmaɪnər /) is a thin, triangular muscle, situated at the upper part of the chest, beneath the pectoralis major in the human body. It arises from ribs III-V; it inserts onto the coracoid process of the scapula. It is innervated by the medial pectoral nerve.

May 5, 2023 · The pectoralis minor is a triangular muscle lying in the anterior thoracic region underneath its larger counterpart, the pectoralis major. It is one of the 4 anterior axioappendicular muscles, with the other 3 being the pectoralis major, serratus anterior , and subclavius .

Oct 7, 2022 · The pectoralis minor is a muscle of the anterior chest wall. It lies underneath the larger pectoralis major and contributes to the anterior wall of the axilla. Attachments: Originates from the 3rd-5th ribs and inserts into the coracoid process of the scapula. Function: Stabilises the scapula by drawing it anteroinferiorly against the thoracic wall.

Dec 6, 2024 · The pectoralis minor presents as a triangular muscle situated in the anterior thoracic wall, deep to the more prominent pectoralis major muscle. Its distinctive triangular shape contributes to its efficient mechanical function.

Nov 4, 2021 · Pectoralis Minor. Origin. 3rd to 5th ribs near their costal cartilages. Insertion. Medial border and superior surface of coracoid process of scapula. Action. Stabilizes scapula by drawing it inferiorly and anteriorly against thoracic wall. Innervation. Medial pectoral nerves (C8 and T1)

Nov 23, 2023 · The pectoralis minor muscle is a thin triangular shaped muscle which lies deep to the much larger and more powerful pectoralis major muscle. Interactive 3D model of the pectoralis minor muscle and information on its origin, insertion, action, innervation, and blood supply.

Nov 2, 2022 · Pectoralis Minor Muscle (Insertion, Origin, Actions & Innervations); explained beautifully in an illustrated and interactive way. Click and start learning now!

Jan 30, 2025 · The pectoralis minor muscle is a muscle of the pectoral region lying deep to and completely covered by the pectoralis major muscle. It is an important anatomical landmark in two senses: it arbitrarily divides the axillary artery into three parts. it arbitrarily divides the axillary lymph nodes into three levels. Summary