What is the splenius capitis muscle?
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 is the origin of the semispinalis capitis muscle?
Semispinalis capitis muscle
|Origin||Articular processes of vertebrae C4-C7, transverse processes of vertebrae T1-T6|
|Insertion||Between superior and inferior nuchal lines of occipital bone|
Where does the splenius capitis refer to?
The splenius capitis (/ˈspliːniəs ˈkæpɪtɪs/) (from Greek spléníon ‘bandage’, and Latin caput ‘head’) is a broad, straplike muscle in the back of the neck. It pulls on the base of the skull from the vertebrae in the neck and upper thorax. It is involved in movements such as shaking the head.
What is the origin of splenius cervicis?
Splenius cervicis muscle
|Origin||Spinous processes of T3 – T6 vertebrae|
|Insertion||Transverse processes of C1 – C3 vertebrae|
|Action||Unilateral contraction: lateral flexion and rotation of neck (ipsilateral) Bilateral contraction: extension of neck|
|Innervation||Lateral branches of posterior rami of lower cervical spinal nerves|
Where is the origin of the sternocleidomastoid?
Sternocleidomastoid Attachments It originates on the anterior surface of the manubrium, and the superior border and anterior surface of the medial third of the clavicle. The SCM converges into one point and inserts on the lateral surface of the mastoid process and the nuchal line of the occipital bone.
What is the splenius?
Definition of splenius : either of two flat oblique muscles on each side of the back of the neck and upper thoracic region.
What causes splenius capitis?
Splenius Capitis Syndrome is a common and painful pain syndrome, first discussed in the 1980s. The pain is often onset by motor vehicle trauma, blunt trauma, a fall, or postural situations where inferior and superior lateral oblique head movements occurred.
What is the origin insertion and action of the sternocleidomastoid?
Origin and insertion The sternal head originates from the manubrium sterni, while the clavicular head from the medial third of the clavicle. The insertion is the lateral surface of the mastoid process of the temporal bone and the lateral half of the superior nuchal line of the occipital bone.
What is the origin of the Sternohyoid muscle?
Origin. The sternohyoid muscles are paired muscles that originate from the upper posterior surface of the manubrium and sternoclavicular joints.
What is the origin of the Splenius Cervicis muscle?
What is the origin of the Obliquus capitis inferior?
Obliquus capitis inferior muscle
|Origin||Spinous process of axis|
|Insertion||Transverse process of atlas|
|Action||Bilateral contraction – Atlantooccipital joint: Head extension Unilateral contraction – Atlantoaxial joint: Head rotation (ipsilateral)|
|Innervation||Posterior ramus of spinal nerve C1 (suboccipital nerve)|
Key facts about the splenius capitis muscle Origin Spinous processes of vertebrae C7-T3, nu Insertion Lateral superior nuchal line of occipita Action Bilateral contraction: Extends head/neck Innervation Lateral branches of posterior rami of sp Blood supply Muscular branches of occipital artery
What is the origin and insertion of the splenius capitis?
Origin and insertion The badge-like splenius capitis arises from the lower half of the nuchal ligament and spinous processes of the seventh cervical to the third thoracic vertebrae (C7-T3). The muscle fibers run superiorly and laterally, in order to insert into the mastoid process of the temporal bone.
Where does the badge like splenius capitis originate?
The badge-like splenius capitis arises from the lower half of the nuchal ligament and spinous processes of the seventh cervical to the third thoracic vertebrae (C7-T3). The muscle fibers run superiorly and laterally, in order to insert into the mastoid process of the temporal bone.
Origin. Splenius cervicis originates on the spinous processes of the vertebrae from T3 to T6. Splenius capitis originates on the spinous processes of the vertebrae from C7 to T3.