Superficial and Intermediate Muscles of the Back

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Last updated 5:05 PM on 9/9/24
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13 Terms

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Superficial Muscles of the Back

Muscles including trapezius, latissimus dorsi, rhomboid major, rhomboid minor, and levator scapulae that are located on the surface of the back.

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Trapezius

A muscle that originates on the occipital bone and thoracic vertebrae, inserts on the scapula, and functions to fix, rotate, and elevate the scapula.

<p>A muscle that originates on the occipital bone and thoracic vertebrae, inserts on the scapula, and functions to fix, rotate, and elevate the scapula.</p>
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Accessory Nerve

The nerve that innervates the trapezius muscle.

<p>The nerve that innervates the trapezius muscle.</p>
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Latissimus Dorsi

A muscle that originates on the lower thoracic to sacral vertebrae and iliac crest, inserts on the humerus, and functions to adduct, extend, and medially rotate the arm.

<p>A muscle that originates on the lower thoracic to sacral vertebrae and iliac crest, inserts on the humerus, and functions to adduct, extend, and medially rotate the arm.</p>
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Thoracodorsal Nerve

The nerve that innervates the latissimus dorsi muscle.

<p>The nerve that innervates the latissimus dorsi muscle.</p>
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Rhomboid Major

A muscle that originates on the spinous process of thoracic vertebrae, inserts on the scapula, and functions to retract and downwardly rotate the scapula.

<p>A muscle that originates on the spinous process of thoracic vertebrae, inserts on the scapula, and functions to retract and downwardly rotate the scapula.</p>
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Rhomboid Minor

A muscle that originates on the spinous process of T1, inserts on the scapula, and functions similarly to the rhomboid major.

<p>A muscle that originates on the spinous process of T1, inserts on the scapula, and functions similarly to the rhomboid major.</p>
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Levator Scapulae

A muscle that originates on the transverse process of cervical vertebrae, inserts on the scapula, and functions to elevate the scapula and laterally flex the neck.

<p>A muscle that originates on the transverse process of cervical vertebrae, inserts on the scapula, and functions to elevate the scapula and laterally flex the neck.</p>
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Intermediate Muscles of the Back

Muscles including serratus posterior inferior and serratus posterior superior that are located deeper than the superficial muscles.

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Serratus Posterior Inferior

A muscle that originates on the spinous process of lumbar vertebrae, inserts on the lower ribs, and functions to depress the ribs.

<p>A muscle that originates on the spinous process of lumbar vertebrae, inserts on the lower ribs, and functions to depress the ribs.</p>
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Serratus Posterior Superior

A muscle that originates on the spinous process of upper thoracic vertebrae, inserts on the upper ribs, and functions to elevate the ribs.

<p>A muscle that originates on the spinous process of upper thoracic vertebrae, inserts on the upper ribs, and functions to elevate the ribs.</p>
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Supraspinous Ligament

A ligament that connects the spinous processes of each vertebrae and spans the entire vertebral column.

<p>A ligament that connects the spinous processes of each vertebrae and spans the entire vertebral column.</p>
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Ligamentum Nuchae

A thickened supraspinous ligament in the cervical region of the spinal column.

<p>A thickened supraspinous ligament in the cervical region of the spinal column.</p>