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What Muscles Are Worked During Neck Extensions?

author image Michelle Zehr
Michelle Zehr started writing professionally in 2009. She has written on health, fitness, fashion, interior design, home decorating,sports and finance for several websites. Zehr possesses a Bachelor of Arts in communication from the University of Pittsburgh, a Master of Arts in professional writing from Chatham University and a graduate certificate in health promotion from California University of Pennsylvania.
What Muscles Are Worked During Neck Extensions?
Young man sits at his desk while stretching his neck Photo Credit: Rostislav_Sedlacek/iStock/Getty Images

Neck extensions are performed for a variety of reasons, including physical therapy after a neck or upper body injury, to relieve arthritis or joint pain, and as a strength building exercise. By gently stretching and strengthening the muscles, you can gradually alleviate your neck pain. Weight lifters use neck extensions with weights to build up their neck muscles. There are eight muscles involved in neck extensions.

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Basic Neck Extension Exercise

The basic neck extension exercise is simple. Stand with your feet set shoulder width apart and your arms by your sides. Slowly tip your head back toward the ceiling, keeping your body straight and your shoulders relaxed. Hold for 15 to 30 seconds, then slowly bring your head forward to its normal position. Repeat two to four times. Variations include using your hand to add slight pressure as you tip your head back and, once you've mastered the neck extension, weights to intensify the exercise.

Splenius Capitus

The splenius capitus is a thick muscle that resembles a strap. It is located in the back of your neck. It begins at the base of your skull and ends at the top of your thoracic spine. This muscle allows for head extension, as well as lateral flexion and rotation of the cervical spine.

Cervicis Muscles

The cervicis are a group of muscles -- including the semispinalis cervicis and the splenius cervicis -- located deep in the back of your neck. These muscles are narrow bands of tendons that run from the top of your neck to the sixth thoracic vertebrae. With the help of these muscles, you can rotate your head to the side, and extend and arch your neck.

Semispinalis Cervicis

The semispinalis cervicis is a thick band of muscle that contains a series of fibers and tendons. It is located in the upper back and runs into the cervical spinous processes. It rotates the head and extends the ribs.

Spinalis Capitus

The spinalis capitus is a bundle of muscles and tendons that comprise a portion of the erector spinae. This muscle is closely connected to the semispinalis capitis and also works to rotate your head.

Semispinalis Capitus

The semispinalis capitis is located in the upper back portion of your neck. It's a broad muscle that originates in the seventh cervical verteabrae and inserts into the occipital bone. This muscle allows you to extend and rotate your head.

Upper Trapezius

The upper trapezius is the largest muscle in the back. It extends from the occipital bone to the shoulder blade. The function of the upper trapezius is to move and support the arms and shoulders.

Longissimus Cervicis

The longissimus cervicis is part of the longissimus muscle group, and is located at the posterior portion of the cervical spine. The longissimus cervicis begins in the thoracic vertebrae and ends in the cervical vertebrae. It allows you to flex and extend your neck.

Levator Scapula

The levator scapula is located on the back and on the sides of your neck. The levator scapula begins at the base of your skull and ends at the scapula, or your shoulder blade. This muscles helps to lift your shoulders. If you carry weight on your shoulders, this muscle becomes tense in order to support the weight.

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