What artery supplies rectus capitis posterior major?
vertebral artery
Just like the other suboccipital muscles, rectus capitis posterior major receives its blood supply from the vertebral artery and deep descending branches of the occipital artery. The vertebral vein is responsible for its venous drainage through the posterior external vertebral venous plexus.
What is the rectus capitis posterior major?
The rectus capitis posterior major (or rectus capitis posticus major, both being Latin for larger posterior straight muscle of the head) arises by a pointed tendon from the spinous process of the axis, and, becoming broader as it ascends, is inserted into the lateral part of the inferior nuchal line of the occipital …
What is the main action of the Suboccipital 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.
What does the rectus capitis posterior minor do?
| Rectus capitis posterior minor muscle | |
|---|---|
| Nerve | Branch of the dorsal primary division of the suboccipital nerve |
| Actions | extends the head at the neck, but is now considered to be more of a sensory organ than a muscle |
| Identifiers | |
| Latin | Musculus rectus capitis posterior minor |
How do you strengthen posterior major rectus capitis?
Forward and backward stretches Sit on the edge of a chair with the back straight and chin parallel to the floor. Tilt the head forward slowly until the stretch is felt in the back of the neck. Hold for five seconds. Lift chin and tilt head back until the stretch is felt in the upper neck.
Why do researchers believe that the rectus capitis posterior minor may be the cause of some headaches?
It is a possibility that increased activity of the RCPmi may cause hypertrophy and thereby dural tension via this myodural bridge. This may result in increased nociceptive input from upper cervical and dural afferents, which could contribute to migraine headache.
What are the 4 suboccipital muscles?
The suboccipital muscles are a group of four muscles that are located inferior to the occipital bone. These four muscles include the rectus capitis posterior major, rectus capitis posterior minor, obliquus capitis superior, and obliquus capitis inferior.
Which of the following is an action of the rectus capitis posterior minor?
Rectus capitis posterior minor muscle is a paired muscle located in the suboccipital compartment of the neck….Rectus capitis posterior minor muscle.
| Origin | Posterior tubercle of atlas |
|---|---|
| Action | Bilateral contraction – Atlantooccipital joint: Head extension |