sternocleidomastoid muscle
paired muscle of the neck that traverses the neck between the manubrium sterni and the mastoid process
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Summary
sternocleidomastoid muscle is a class of anatomical entity[1]. It draws 8,757 Wikipedia views per month (class of anatomical entity category, ranking #179 of 1,372).[2]
Key Facts
- Instance of: chiral muscle organ type[3]
- Subclass of: superficial muscle of neck[4], particular anatomical entity[5]
- Part of: muscle of neck[6]
- Commons category: Sternocleidomastoid muscles[7]
- Commons gallery: Sternocleidomastoid muscle[8]
- Described by source: Gray's Anatomy (20th edition)[9]
- Arterial supply: sternocleidomastoid branches of occipital artery[10], inferior thyroid artery[11], sternocleidomastoid branch of superior thyroid artery[12]
- Venous drainage: sternocleidomastoid vein[13]
- Innervated by: Anterior ramus of sixth cervical nerve[14], spinal part of the accessory nerve[15], Anterior ramus of third cervical nerve[16], spinal accessory nerve[17]
- Muscle action: flexion of the neck[18], flexion of the head[19], lateral flexion of the neck[20], lateral flexion of the head and neck[21], rotation of the head[22], rotation of the neck[23]
- Muscle origin: clavicle[24], manubrium[25]
- Muscle insertion: mastoid process[26], superior nuchal line[27]
Why It Matters
sternocleidomastoid muscle has Wikipedia articles in 24 language editions, a strong signal of global cultural recognition.[28] It is known by 63 alternative names across languages and contexts.[29]