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29 Νοε 2023 · The innervation is supplied by the long thoracic nerve (C5-7), a branch of the brachial plexus. The innervation for the serratus anterior is very easy to remember if you just know the right mnemonics!
14 Ιουν 2024 · The long thoracic nerve (C5-C7) is the primary and common source of innervation for the entire muscle. The superior and inferior parts have an additional innervation as well. An independent nerve branch with its roots in the C4, C5, and C6 innervates the superior part.
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.
It is innervated by the long thoracic nerve from the brachial plexus. The serratus anterior acts to pull the scapula forward around the thorax. The muscle is named from Latin: serrare = to saw (referring to the shape); and anterior = on the front side of the body.
10 Σεπ 2024 · The long thoracic nerve, which originates from the upper portion of the superior trunk of the brachial plexus and is typically composed of cervical nerves C5, C6, and C7, is responsible for the innervation of the serratus anterior.
18 Ιαν 2024 · Function: Rotates the scapula, allowing the arm to be raised over 90 degrees. It also protracts the scapula, holding it against the ribcage. Innervation: Long thoracic nerve. Blood supply: Thoracodorsal artery, superior thoracic artery, lateral thoracic artery. The serratus anterior and pectoralis minor muscles. Access this feature with pro.
The action of the serratus anterior muscle includes: Protraction of the scapula; Upward rotation of the scapula; Posterior tilting/tipping of scapula during arm elevation; Stabilization of the scapula.
