The sternocleidomastoid muscles are involved in cervical side bending. Welcome to Innerbody.com, a free educational resource for learning about human anatomy and physiology. All three act to ipsilaterally side bend the neck. The back contains the origins of many of the muscles that are involved in the movement of the neck and shoulders. With very few exceptions, the arrangement of smooth muscle and cardiac muscle in humans is identical to the arrangement found in other vertebrate animals. The motion of the neck is described in terms of rotation, flexion, extension, and side bending (i.e., the motion used to touch the ear to the shoulder). KS2 Science Human body learning resources for adults, children, parents and teachers. Let us know if you have suggestions to improve this article (requires login). It is accomplished primarily by the sternocleidomastoid muscles, with assistance from the longus colli and the longus capitis, which are found in the front of the neck. We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. Visible Body - Virtual Anatomy to See Inside the Human Body Resources Thank Your Hypothalamus, Without a Hippocampus, Your Long-term Memory Is History, 5 Ways Homeostasis Keeps Your Body Humming Along, Toilet Stools, Like Squatty Potty, Really Get Things Moving, Study Says, Scientists Grow Human Blood Vessels in Lab, Sitting Is Not the New Smoking. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Moody? What Does It Mean If Your Blood Oxygen Level Is Low? Together, the sternocleidomastoid muscles on both sides of the neck act to flex the neck and raise the sternum to assist in forced inhalation. The human body is the structure of a human being. Multiple muscles in the back function specifically in movements of the back. Learn about the human body and how its systems work together. You consent to our cookies if you continue to use our website. The BBC is not liable for the contents of any external internet sites listed, nor does it endorse any commercial product or service mentioned or advised on any of the sites. Lateral view of the human muscular system. Skeletal muscles are attached to the bones by tendons. Please select which sections you would like to print: Corrections? By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. Weird & Wacky, Copyright © 2020 HowStuffWorks, a division of InfoSpace Holdings, LLC, a System1 Company. The BODY WORLDS exhibitions inspire visitors all over the world. Cardiac muscle makes up the mass of the heart and is responsible for the rhythmic contractions of that vital pumping organ; it too is under involuntary control. This article is concerned with the skeletal muscles of the human body, with emphasis on muscle movements and the changes that have occurred in human skeletal musculature as a result of the long evolutionary process that involved the assumption of upright posture. Tired? Changes in the muscles of the head and neck, https://www.britannica.com/science/human-muscle-system, British Broadcasting Corporation - Muscles. Side bending also is an important action of the cervical spine. Always consult your own GP if you're in any way concerned about your health. BBC SCIENCE is provided for general information only, and should not be treated as a substitute for the medical advice of your own doctor, psychiatrist or any other health care professional. Rotation is one of the most-important actions of the cervical (neck) spine. The BBC is not responsible for the content of external websites The erector spinae muscles (iliocostalis, longissimus, and spinalis) are large, deep muscles that extend the length of the back. Learn about the inner workings of the human body and the effects of healthy lifestyles. The various muscle groups work in a coordinated fashion to control the movements of the human body. Author of. Neck extension is the opposite of flexion and is accomplished by many of the same muscles that are used for other neck movements, including the splenius cervicis, splenius capitis, iliocostalis, longissimus, and spinalis muscles. Human eye muscles can move 100,000 times a day. Broadly considered, human muscle--like the muscles of all vertebrates--is often divided into striated muscle, smooth muscle, and cardiac muscle. The splenius capitis and splenius cervicis also assist in neck side bending. The following sections provide a basic framework for the understanding of gross human muscular anatomy, with descriptions of the large muscle groups and their actions. 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The small muscles of the vertebrae (the multifidi and rotators) help rotate, extend, and side bend the back. Learn the causes and treatment of back pain.

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