What bones are involved in shaking your head?
Answer and Explanation: To shake one’s head in disagreement, one requires the use of the atlas and axis bones. These two bones form together the atlanto-axial joint, which…
What accessory on C2 is responsible for the ability for us to shake our heads no?
C2 is known as the axis. It has a bony projection called the odontoid process that articulates with C1. C1 can pivot around C2, allowing us to rotate our head/shake head “no”. You just studied 5 terms!
Which muscles flex and extend your head?
Muscles are named according to their shape, location, or a combination. They are further categorized according function such as flexion, extension, or rotation….Muscles of the Spinal Column.
| CERVICAL MUSCLES | FUNCTION | NERVE |
|---|---|---|
| Sternocleidomastoid | Extends & rotates head, flexes vertebral column | C2, C3 |
Which vertebrae allows you to turn your head left and right?
axis
C2 is called the “axis” because it enables the head’s rotation around a longitudinal axis with left and right rotation as when shaking the head “no” (Figure 2, C2 – Axis). To accomplish this feat, the axis has a unique feature among the vertebrae: the dens (or odontoid process).
What muscles rotate the head?
The major muscle that laterally flexes and rotates the head is the sternocleidomastoid.
What muscles rotate the neck?
In the cervical spine, the erector spinae muscles play key roles in supporting posture, rotating the neck, and extending the neck backward. The suboccipital muscles are 4 pairs of small muscles that connect the top of the cervical spine with the base of the skull.
Which type of joint allows the nodding of our head?
The atlas and the occipital bone form the atlanto-occipital joint, which allows neck flexion. When you nod your head as if to say “yes,” that is neck flexion. The atlas and axis form the atlanto-axial joint, which allows head rotation.
What does C4 C5 C6/C7 control?
C5, as mentioned earlier, along with C3 and C4, contributes to the phrenic nerve that innervates the diaphragm. Roots C5, C6, and C7 produce the long thoracic nerve, responsible for controlling the serratus anterior.
What muscle helps turn the neck?
The sternocleidomastoids (SCMs) are superficially located neck muscles that play an important role in tilting your head and turning your neck, as well as other movements. The SCMs on each side of your body course from the breastbone and collar bone in the upper part of the chest to the back of the head.
What muscles turn your head?
The sternocleidomastoid is a superficially located neck muscle that plays an important role in tilting your head and turning your neck, as well as other things.