Corpus: Subclavius muscle: Unterschied zwischen den Versionen

Aktuelle Version vom 11. September 2024, 15:42 Uhr

from Latin: clavus - nail

Definition

The subclavius muscle is a narrow, short muscle that lies between the first rib and the clavicle.

Course

The subclavius muscle originates from the first rib and the first costal cartilage via a strong, short tendon. Its muscle fibers then extend obliquely laterally and upward. The muscle inserts on the underside of the clavicle, specifically in the middle and lateral third, between the costoclavicular ligament and the conoid ligament.

Innervation

The subclavius muscle is innervated by the subclavian nerve, which arises from the supraclavicular part of the brachial plexus, specifically from spinal segments C5 and C6.

Function

The subclavius muscle functions to pull the lateral end of the clavicle downward (caudally). Along with the pectoralis minor muscle, it helps keep the subclavian vein open by stretching the clavipectoral fascia. Additionally, when the trapezius muscle lifts the thorax, the subclavius muscle stabilizes the clavicle by anchoring it to the first rib.

Clinic

Scar tissue shortening of the subclavius muscle can contribute to thoracic outlet syndrome (TOS), a condition that compresses the nerves and blood vessels passing through the thoracic outlet.

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-{{Raw}}
-''from Latin: clavus - nail''<br>
+''from Latin: clavus - nail''
-''Synonym: subclavian muscle''
 ==Definition==
-The '''subclavius muscle''' is a narrow and short [[Corpus:Muscle|muscle]] that lies between the first rib and the collarbone (clavicle). <dcembed ratio="16x9"><dcEmbedUrl src="https://www.doccheck.com/de/detail/photos/43402-musculus-subclavius"></dcEmbedUrl>
+The '''subclavius muscle''' is a narrow, short [[Corpus:Muscle|muscle]] that lies between the first [[Ribose|rib]] and the [[Corpus:Clavicle|clavicle]]. <dcembed ratio="16x9"><dcEmbedUrl src="https://www.doccheck.com/de/detail/photos/43402-musculus-subclavius"></dcEmbedUrl>
 <dcEmbedUrl src="https://www.doccheck.com/de/detail/photos/43403-musculus-subclavius"></dcEmbedUrl></dcembed>
-==Progression==
+==Course==
-The strong, short ''tendon of origin'' of the subclavius muscle originates from the first rib and the first costal cartilage. From there, its fleshy fibres extend obliquely laterally and cranially. The ''insertion'' of the muscle lies in the middle and lateral third of the underside of the clavicle, between the costoclavicular ligament and the conoid ligament.
+The subclavius muscle originates from the first rib and the first [[Corpus:Costal cartilage|costal cartilage]] via a strong, short [[Corpus:Tendon|tendon]]. Its muscle fibers then extend obliquely laterally and upward. The muscle inserts on the underside of the clavicle, specifically in the middle and lateral third, between the [[Corpus:Costoclavicular ligament|costoclavicular ligament]] and the [[Corpus:Conoid ligament|conoid ligament]].
 <dcembed><dcembedurlskatchfab src="https://sketchfab.com/3d-models/6855d540ef4f4a2a8a82c28b013a108f" ui_controls="1"></dcembedurlskatchfab></dcembed>
 ==Innervation==
-Innervation is provided by the subclavian nerve from the supraclavicular part of the brachial plexus (segments: C5 and C6).
+The subclavius muscle is innervated by the [[Corpus:Subclavian nerve|subclavian nerve]], which arises from the supraclavicular part of the [[Corpus:Brachial plexus|brachial plexus]], specifically from spinal segments C5 and C6.
 ==Function==
-The subclavius muscle pulls the lateral end of the clavicle caudally. Together with the pectoralis minor muscle, it ensures that the subclavian vein is kept open by stretching the clavipectoral fascia.
+The subclavius muscle functions to pull the lateral end of the clavicle downward (caudally). Along with the [[Corpus:Pectoralis minor muscle|pectoralis minor muscle]], it helps keep the [[Corpus:Subclavian vein|subclavian vein]] open by stretching the [[Corpus:Clavipectoral fascia|clavipectoral fascia]]. Additionally, when the [[Corpus:Trapezius muscle|trapezius muscle]] lifts the [[Corpus:Thorax|thorax]], the subclavius muscle stabilizes the clavicle by anchoring it to the first rib.
-When the trapezius muscle lifts the thorax, the subclavius muscle fixes the collarbone to the first rib.
 <dcembed ratio="16x9"><dcembedurl src="https://www.doccheck.com/de/detail/videos/3553-musculus-subclavius"></dcembedurl></dcembed>
 ==Clinic==
-Cicatricial shortening of the subclavius muscle can lead to thoracic outlet syndrome (TOS).
+Scar tissue shortening of the subclavius muscle can contribute to thoracic outlet syndrome (TOS), a condition that compresses the nerves and blood vessels passing through the thoracic outlet.
 [[Kategorie:Corpus]]
 [[Kategorie:Head]]
 [[Kategorie:Muscle]]