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1. sternocleidomastoid
noun. one of two thick muscles running from the sternum and clavicle to the mastoid and occipital bone; turns head obliquely to the opposite side; when acting together they flex the neck and extend the head.
Synonyms
- striated muscle
- skeletal muscle
- neck
- sternocleidomastoid muscle
- cervix
- sternocleido mastoideus
Antonyms
- flexor
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Sentences with sternocleidomastoid
1. Noun, singular or mass
The erector spinae muscles in the back of your neck and sternocleidomastoid muscles on either side of your neck stabilize your head and maintain proper posture.
2. Adjective
A strained sternocleidomastoid muscle, which can be irritated by looking upward too much or sleeping with a pillow that does not provide much support, may also cause a headache as well as neck pain.
3. Verb, base form
The splenius is the main muscle targeted, but the traps, levator scapulae and sternocleidomastoid all get worked as well.