In this article we will discuss about Scalenus posterior muscle. So let’s get started.
Scalenus posterior muscle
It originates from the posterior tubercles of transverse processes of C5-C7 and gets inserted into the outer surface of second rib. It is innervated by the spinal nerves C6,C7 and C8 and artery supply is through the ascending cervical artery. It’s chief action is elevation of second rib and ipsilateral flexion of neck.
In this article we will discuss about the Scalenus medius muscle. So let’s get started.
Scalenus medius muscle
It originates from the posterior tubercles of transverse processes of C2-C7 and gets inserted into the scalene tubercle of first rib. It is innervated by the anterior rami of C3-C8 and artery supply is through the ascending cervical artery. It’s chief action is elevation of first rib and ipsilateral flexion of neck.
In this article we will discuss about the Splenius cervicis muscle. So let’s get started.
Splenius cervicis
It originates from the transverse processes of T3-T6 and gets inserted into the posterior tubercles of transverse processes of C1-C3. It is innervated by the posterior rami of C5-C6 and artery supply is through the transverse cervical artery and occipital artery. It’s chief action is extension of cervical spine along with ipsilateral rotation and flexion of neck.
In this article we will discuss about Splenius capitis muscle. So let’s get started.
Splenius capitis
It originates from the lower half of the nuchal ligament and spinous process of C7 and upper three or four thoracic vertebrae and gets inserted into the mastoid process of temporal bone, occipital bone and lateral part of the superior nuchal line. It is innervated by the posterior ramus of spinal nerves C3-C4 and artery supply is through the muscular branches of aorta. It’s chief action is head extension along with lateral flexion and rotation of cervical spine.
In this article we will discuss about Omohyoid muscle. So let’s get started.
Omohyoid muscle
It originates from the upper border of the scapula and superior transverse scapular ligament and gets inserted into the lower border of hyoid bone lateral to the sternohyoid muscle. It is innervated by the ansa cervicalis (C1-C3) and artery supply is through the inferior thyroid artery. It’s chief action is depression of hyoid bone and larynx. It also helps in terminal phase of swallowing.
