Is clavipectoral fascia a ligament?
Is clavipectoral fascia a ligament?
The clavipectoral fascia lies below the clavicular head of the pectoralis major. It fills in the space between the clavicle and the pectoralis minor. Between the 1st rib and the coracoid process of the scapula, the fascia is thickened to form the costocoracoid ligament.
What is in the Clavipectoral triangle?
It contains the cephalic vein, and deltopectoral fascia, which is a layer of deep fascia that invests the three structures that make up the border of the triangle. The deltoid branch of the thoracoacromial artery also passes through this triangle, giving branches to both the deltoid and pectoralis major muscles.
What is inside the Deltopectoral triangle?
The deltopectoral triangle is a triangular depression formed between the clavicle above, lateral border of the pectoralis major medially and the medial border of the deltoid laterally. This narrow triangular area contains investing layers of the clavipectoral fascia and the cephalic vein on its roof which it pierces.
What is the origin and insertion of the pectoralis minor?
Attachments of Pectoralis Minor Muscle: Origin & Insertion Origin: (proximal attachments): Anterior surfaces of the sternal ends of ribs 3-5. Insertion: (distal attachments): Coracoid process of scapula.
Where is the origin of 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. It originates from the margins of the third to fifth ribs adjacent to the costochondral junction.
What does Deltopectoral mean?
Deltopectoral definition Filters. (anatomy) Of or pertaining to both the deltoid muscle and the pectoralis major. adjective.
What is infraclavicular region?
Medical Definition of infraclavicular : situated or occurring below the clavicle the radiograph showed an opacity in the left infraclavicular area of the chest.
What is the origin of serratus anterior?
The serratus anterior (SA) is a fan-shaped muscle that originates on the superolateral surfaces of the first to eighth or ninth ribs at the lateral wall of the thorax and inserts along the superior angle, medial border, and inferior angle of the scapula.
What is pectoralis minor origin and insertion?
It originates from the margins of the third to fifth ribs adjacent to the costochondral junction. The fibers consequently pass upward and laterally to insert into the medial border and superior surface of the coracoid process of the scapula.
What is the origin and insertion of the pectoralis major?
The insertion of the pectoralis major is at the lateral lip of the intertubercular sulcus of the humerus. There are 2 heads of the pectoralis major, the clavicular and the sternocostal, which reference their area of origin. The sternocostal head is described as having between 2 to 7 distinct segments.
What lies in the Infraclavicular fossa?
The boundaries of the infraclavicular fossa are the pectoralis minor and major muscles anteriorly, ribs medially, clavicle and coracoid process superiorly and humerus laterally. Posterior to the brachial plexus in this region is the scapula.
What is the origin of Sternocleidomastoid?
Sternocleidomastoid Attachments It originates on the anterior surface of the manubrium, and the superior border and anterior surface of the medial third of the clavicle. The SCM converges into one point and inserts on the lateral surface of the mastoid process and the nuchal line of the occipital bone.
What does the clavipectoral fascia protect?
The clavipectoral fascia ( costocoracoid membrane; coracoclavicular fascia) is a strong fascia situated under cover of the clavicular portion of the pectoralis major. It occupies the interval between the pectoralis minor and subclavius, and protects the axillary vessels and nerves.
What is the difference between axillary fascia and clavipectoral fascia?
The axillary fascia is a dense fibrous sheet that extends across the base of the axilla. The clavipectoral fascia is a strong fascial sheet deep to the clavicular head of the pectoralis major muscle, filling the space between the clavicle and the pectoralis minor muscle.
How many muscles does the clavipectoral fascia enclose?
The clavipectoral fascia encloses 2 muscles—subclavius and pectoralis minor. Lateral pectoral nerve. Thoraco-acromial artery.
Where is the costocoracoid fascia?
Clavipectoral fascia. The clavipectoral fascia (costocoracoid membrane; coracoclavicular fascia) is a strong fascia situated under cover of the clavicular portion of the pectoralis major . It occupies the interval between the pectoralis minor and subclavius, and protects the axillary vein and artery, and axillary nerve .