Lecture 15: Muscles of the neck

Anatomy Basics Section 5: Muscles of the abdomen, back, and neck
4 minutes
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Transcript

Hi, and welcome to the final lecture of anatomy basics. We are going to explore the muscles that make your head rotate, flex and extend some of these muscles you have met before in the previous lecture about the muscles of the back. You will understand that from erector spinae group and transfer cells bananas group, only the circle and capital parts will move the neck. The lumber parts do not contribute in moving the neck and head of course, most muscles are active in more than just one movement. So that makes it hard to classify them as strictly back or strictly neck muscles. However, let's get started with an overview of the muscles in this lecture.

We are going to start at the posterior side splenius services and splenius capitis arise from the spinal process splenius services from t three to T six and capitals from C seven to T for the lower fibers of splenius services, and that the transfers processes of C One, two and three, and the upper fibers of splenius capitis insert at the cranium at the mastoid process. Then we have a bunch of small muscles that will be referred to as one group, the sub occipital. They arise mainly from the occiput and insert at various spots at the posterior sides of C one and C two. These small ones are often cause of tension headaches, and you can easily find them when you put your fingers to the base of your cranium and extend your head against your fingers. They enable rotation and extension depending on unilateral or bilateral contractions.

Now we move on to the lateral side where screens are. All three screens start at the transverse processes of the cervical spine. scaling is anterior from C three to C six, squalene is medius, C two to C seven eskalene is posterior from C five to C seven. They inserted the first and second ribs, anterior and medius and rib one and posterior at rib to not only enable the scalenes side flexion of the cervical spine, they also lift up with one and two when inhaling deeply. They help getting extra air when you do sports or when you're crying. Now we have arrived at the sternocleidomastoid This is a long word bits no more than a description of its origin and insertions.

Its origins It's tournament playdough which is the same as clavicle, and it's insertion is at the mastoid process of cranium. It rotates the head to the opposite side, and when acting bilateral it flexes the spine and lifts the head like this. where sternocleidomastoid is a superficial flexor, there are some deeper flexes as well. We have longest cavities and longest Cali. Cali means the front side of the neck. Longest capitis arises from the anterior side of the transverse processes of C three to C five or six.

And inserts at the anterior occipital is as you can see here. Longest Collie arises from the anterior side of the vertebral bodies of C one to T three and inserts at the transverse processes of C three to C six. Any other smaller muscles in this region are left out of this course. Well, this is the end of lecture three of section five. You have finished the complete course of anatomy basics. I really hope you have enjoyed the videos as I had a good time making them on behalf of my friend and me, I want to compliment you for being such a good student.

We are going to take some rest now, off to hot work. I wish you all the best. Bye bye

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