What is Splenius capitis?
Splenius capitis is a thick, flat muscle at the posterior aspect of the neck arising from the midline and extending superolaterally to the cervical vertebrae and, along with the splenius cervicis, comprise the superficial layer of intrinsic back muscles.
What attachments of Spinalis Cervicis are found in the neck?
| Spinalis | |
|---|---|
| Origin | Thoracis: Spinous process of upper lumbar and lower thoracic vertebrae. Cervicis: nuchal ligament and spinous process of C7. |
| Insertion | Thoracis: Spinous process of upper thoracic vertebrae. Cervicis: Spinous process of cervical vertebrae except atlas. |
| Artery | Lateral sacral artery |
Where is the Semispinalis?
The semispinalis muscle is found lying on either side of the vertebral column spanning from the occipital bone to as far as to the tenth thoracic vertebrae. Of the three components, thoracis sits the most medially, and capitis the most laterally.
What is the splenius cervicis?
Musculus splenius cervicis is one of the deep (or intrinsic) muscles of the cervical and thoracic spine. Its fibres run superiorly and laterally. It assists in ipsilateral cervical side flexion and rotation, when both splenius cervicis muscles contract they extend the cervical spine.
What is the Sternocleidomastoid?
Sternocleidomastoid (SCM) (synonym musculus sternocleidomastoideus) is a paired superficial muscle in the anterior portion of the neck. The sternocleidomastoid muscle (SCM) is an important landmark in the neck which divides it into an anterior and a posterior triangle.
What is the spinalis cervicis?
Spinalis Cervicis belongs to the medial column of the erector spinae (Sacrospinalis) group of muscles. It is the cervical portion of the spinalis muscle with spinalis capitis superiorly and spinalis thoracis inferiorly.
What is the function of the spinalis?
spinalis muscle, any of the deep muscles of the back near the vertebral column that, as part of the erector spinae (sacrospinalis) muscle group, assist in extension (e.g., bending backward), lateral flexion (bending to the side), and rotation of the spine.
What is Semispinalis Cervicis?
Semispinalis cervicis runs from the transverse processes of the upper six thoracic vertebrae to the spinous processes of the second to fifth cervical vertebrae. The semispinalis capitis is a distinct structure overlying the semispinalis cervicis. It forms the largest muscle mass in the posterior aspect of the neck.
What is the function of the Semispinalis Cervicis?
Function. Maintains head posture. manual resistance done in extension over the vertebral arch of C1 and C4 emphasized the activation of the semispinalis cervicis muscle relative to the splenius capitis at the spinal level directly caudal to the site of resistance.
What Innervates the splenius cervicis?
Innervation. Splenius cervicis muscle is innervated by the lateral branches of the posterior rami of the lower cervical spinal nerves.
Is splenius cervicis the same as Splenius Colli?
The splenius cervicis (/ˈspliːniəs sərˈvaɪsɪs/) (also known as the splenius colli, /- ˈkɒlaɪ/) is a muscle in the back of the neck.
What Innervates the sternocleidomastoid?
Motor Function. The spinal accessory nerve innervates two muscles – the sternocleidomastoid and trapezius. Attachments – Runs from the mastoid process of the temporal bone to the manubrium (sternal head) and the medial third of the clavicle (clavicular head).