Items tagged “spinal muscles”
6 results
Article
Atlas (C1)
The atlas (plural: atlases) is the first cervical vertebra, commonly called C1. It is an atypical cervical vertebra with unique features. It articulates with the dens of the axis and the occiput, respectively allowing rotation of the head, and flexion, extension and lateral flexion of the head. ...
Article
Suboccipital muscle group
The suboccipital muscle group contains four paired muscles, three of which pairs belong to the suboccipital triangle. These muscles all lie below the occipital bone and are responsible for postural support of the head, as well as extension, lateral flexion and rotation. As these muscles are smal...
Article
Splenius capitis muscle
The splenius capitis is a strap-like muscles that, along with the splenius cervicis, comprise the superficial layer of intrinsic back muscles.
Gross anatomy
Attachments
origin: ligamentum nuchae, and the tips of the spinous processes and associated supraspinous ligaments of C7 and the upper t...
Article
Splenius cervicis muscle
The splenius cervicis is part of the superficial layer of the intrinsic back muscles. It is one of the two muscles in this group, the other being the splenius capitis.
Summary
origin: spinous processes of T3-T6
insertion: transverse processes of C1-C3
innervation: dorsal rami of the lower ce...
Article
Erector spinae group
The erector spinae group is the intermediate layer of the intrinsic muscles of the back. This group is made of three subgroups, with the group divisions occurring by location.
spinalis subgroup is the most medial
longissimus subgroup is between spinalis and iliocostalis
iliocostalis subgroup ...
Article
Transversospinalis muscle group
The transversospinalis muscle group is the deep layer of the intrinsic back muscles. These muscles lie between the transverse and spinous processes and are grouped by length of the fascicles, as well as region covered. The groups are rotatores, multifidus, and semispinalis.
Gross anatomy
Rotat...