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In humans, the epicranial aponeurosis originates from the external occipital protuberance and highest nuchal lines of the occipital bone. [1] It merges with the occipitofrontalis muscle. In front, it forms a short and narrow prolongation between its union with the frontalis muscle (the frontal part of the occipitofrontalis muscle).
The epicranial aponeurosis is a tough layer of dense fibrous tissue that covers the upper part of the skull. The epicranial muscle (also called the epicranius) has two sections: the occipital belly, near the occipital bone, and the frontal belly, near the frontal bone.
It inserts into the epicranial aponeurosis. [2] the frontal belly, near the frontal bone. [1] It originates from an intermediate tendon that connects to the occipital belly. [2] It inserts in the fascia of the facial muscles and in the skin above the eyes and nose. [2] Some sources consider the occipital and frontal bellies to be two distinct ...
An aponeurosis (/ ˌ æ p ə nj ʊəˈr oʊ s ɪ s /; pl.: aponeuroses) is a flattened tendon [1] by which muscle attaches to bone or fascia. [2] Aponeuroses exhibit an ordered arrangement of collagen fibres, thus attaining high tensile strength in a particular direction while being vulnerable to tensional or shear forces in other directions. [ 1 ]
A: Aponeurosis. The epicranial aponeurosis or galea aponeurotica is a tough layer of dense fibrous tissue which anchors the above layers in place. It runs from the frontalis muscle anteriorly to the occipitalis posteriorly. L: Loose areolar connective tissue. This layer has a gel-like consistency, and allows the more superficial layers of the ...
epicranial aponeurosis: facial nerve [CNVII] fixes galeal aponeurosis 2 1 auricularis anterior: head, ear, auricular, extrinsic (left/right) temporal fascia: front of helix of ear: posterior auricular artery: facial nerve [CNVII] pulls auricle forwards 2 1 auricularis superior: head, ear, auricular, extrinsic (left/right) epicranial aponeurosis
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The upper, often faintly marked, is named the highest nuchal line, but is sometimes referred to as the Mempin line or linea suprema, and it attaches to the epicranial aponeurosis. Below the highest nuchal line is the superior nuchal line. To it is attached, the splenius capitis muscle, the trapezius muscle, [1] and the occipitalis. [2]