Sternocleidomastoid and Trapezius Muscles

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clavicle

For those lymph nodes near the ________ such as the inferior deep cervical, accessory, and supraclavicular lymph nodes, it is important to use the trapezius muscle as a base during palpation.

flex

If both sternocleidomastoid muscles contract at the same time the head will ____ at the neck and extend at the junction between the neck and skull.

bend

If one sternocleidomastoid muscle contracts, the head and neck ____ tothe ipsilateral side, and the face and front of the neck rotate to the contralateral side.

sternocleidomastoid muscle

One of the largest and most superficial cervical muscles is the paired ___________________ ______.

trapezius muscle

The _________ ______ is a paired superficial cervical muscle, which appears as a broad flat triangular muscle that is superficial to both the lateral and posterior surfaces of the neck.

lift

The cervical fibers of the trapezius muscle act to ____ the clavicle and scapula as when the shoulders are shrugged.

superior nuchal line

The curved ridges on the external surface of the occiptal bone serve as sites for muscle attachments such as for the origination of both the sternocleidomastoid and trapezius muscles from the _________ ______ ____.

occipital artery

The descending branches of the _________ ______ supply the trapezius muscle.

external acoustic meatus

The insertion of the sternocleidomastoid muscle is just posterior and inferior to the ________ ________ ______ of each ear.

mastoid process of the temporal bone

The steinocleidomastoid muscle passes posteriorly and superiorly to insert on the _______ _______ __ ___ ________ ____.

cervical triangles

The sternocleidomastoid muscle divides the neck region into anterior and posterior ________ _________, which helps define the location of other structures, such as the lymph nodes of the head and neck.

neck

The sternocleidomastoid muscle is a thick cervical muscle and thus serves as a primary muscular landmark of the ____.

accessory nerve

The sternocleidomastoid muscle is innervated by the eleventh cranial nerve or the _________ _____.

clavicle; sternum

The sternocleidomastoid muscle originates from the medial part of the ________ and the superior and lateral surfaces of the _______.

clavicle; scapula

The trapezius muscle inserts on the lateral third of the _________ and parts of the ________.

accessory nerve

The trapezius muscle is innervated by the eleventh cranial nerve or the _________ _____ as well as the third and fourth cervical nerves.

occipital bone; cervical and thoracic regions

The trapezius muscle originates from the external surface of the _________ ____at the superior nuchal line and the posterior midline of the ________ ___ ________ _______.

cervical muscles

The two superficial ________ _______ include the sternocleidomastoid and trapezius muscles.


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