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==Definition==
==Definition==
The '''rectus capitis posterior minor''' muscle is a skeletal muscle located on the neck. It belongs to the autochthonous back musculature. <dcembed ratio="16x9"><dcEmbedUrl src="https://www.doccheck.com/de/detail/photos/42950-musculus-rectus-capitis-posterior-minor"></dcEmbedUrl>
The '''rectus posterior minor capitis muscle''' is a [[Corpus:Muscle|skeletal muscle]] located in the [[Corpus:Neck|neck]] and is part of the [[Corpus:Autochthonous back musculature|autochthonous back musculature]]. <dcembed ratio="16x9"><dcEmbedUrl src="https://www.doccheck.com/de/detail/photos/42950-musculus-rectus-capitis-posterior-minor"></dcEmbedUrl>
<dcEmbedUrl src="https://www.doccheck.com/de/detail/photos/42951-musculus-rectus-capitis-posterior-minor"></dcEmbedUrl></dcembed>
<dcEmbedUrl src="https://www.doccheck.com/de/detail/photos/42951-musculus-rectus-capitis-posterior-minor"></dcEmbedUrl></dcembed>


==Course==
==Course==
The origin of the rectus capitis posterior minor muscle is the posterior tuberosity of the atlas (1st cervical vertebra). It attaches after a straight course to the linea nuchae inferior of the occipital bone.
The rectus posterior minor capitis muscle originates from the posterior tubercle of the [[Corpus:Atlas|atlas]] (the 1st [[Corpus:Cervical vertebra|cervical vertebra]]). It runs straight to attach to the inferior nuchal line of the [[Corpus:Occipital bone|occipital bone]].
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==Innervation==
==Innervation==
The innervation of the rectus capitis posterior minor muscle is provided by medial branches of the posterior rami from the spinal nerves of spinal cord segment C1. The dorsal ramus of the first spinal nerve is also known as the suboccipital nerve.
The rectus posterior minor capitis muscle is innervated by the medial branches of the posterior rami of the [[Corpus:Spinal nerve|spinal nerves]] from segment C1. The dorsal ramus of the first spinal nerve is also known as the [[Corpus:Suboccipital nerve|suboccipital nerve]].


==Function==
==Function==
When the rectus capitis posterior minor muscle contracts on one side, the head is slightly tilted and rotated to the same side. When contracted on both sides, the muscle supports the dorsiflexion of the head.
When the rectus posterior minor capitis muscle contracts on one side, it causes slight tilting and rotation of the [[Head-Cheese-Sign|head]] to the same side. When both sides contract simultaneously, the muscle aids in dorsiflexion of the head.


<dcembed ratio="16x9"><dcembedurl src="https://www.doccheck.com/de/detail/videos/3602-musculus-rectus-capitis-posterior-minor"></dcembedurl></dcembed>
<dcembed ratio="16x9"><dcembedurl src="https://www.doccheck.com/de/detail/videos/3602-musculus-rectus-capitis-posterior-minor"></dcembedurl></dcembed>


==Variety==
==Variety==
The rectus capitis posterior minor muscle can either be completely absent or very small on one side.
In some individuals, the rectus posterior minor capitis muscle may be completely absent or very small on one side.
 
''See also:'' Back muscles
[[Kategorie:Corpus]]
[[Kategorie:Corpus]]
[[Kategorie:Hea]]
[[Kategorie:Hea]]
[[Kategorie:Muscle]]
[[Kategorie:Muscle]]

Aktuelle Version vom 2. Dezember 2024, 17:06 Uhr


Definition

The rectus posterior minor capitis muscle is a skeletal muscle located in the neck and is part of the autochthonous back musculature.

Course

The rectus posterior minor capitis muscle originates from the posterior tubercle of the atlas (the 1st cervical vertebra). It runs straight to attach to the inferior nuchal line of the occipital bone.

Innervation

The rectus posterior minor capitis muscle is innervated by the medial branches of the posterior rami of the spinal nerves from segment C1. The dorsal ramus of the first spinal nerve is also known as the suboccipital nerve.

Function

When the rectus posterior minor capitis muscle contracts on one side, it causes slight tilting and rotation of the head to the same side. When both sides contract simultaneously, the muscle aids in dorsiflexion of the head.

Variety

In some individuals, the rectus posterior minor capitis muscle may be completely absent or very small on one side.