The Erector Spinae Muscle group extend the neck and rotate the head. True False

The Erector Spinae Muscle group extend the neck and rotate the head.

True

False

Expert Solution

True-

Erector Spinae muscle are large, disorganized group of muscles that consists of 3 columns of muscles-(9 Muscles)

1.iliocostalis- Iliocostalis cervicis , Iliocostalis thoracis & Iliocostalis lumborum

2.Longissimus- Longissimus capitis , Longissimus cervicis & Longissimus thoracis

3.Spinalis - Spinalis capitis , Spinalis cervicis & Spinalis thoracis

These Muscles run vertically on either side of the spine from lower back of the skull alongside the lumbar, thoracic,& cervical sections of the spine down to the Pelvis .

Action:

1. Back extension

2. Lateral back flexion

3. Lateral back rotation

*Spinalis capitis , Spinalis cervicis: Extends neck & rotates head

*Spinalis thoracis: Extends vertebral column

* Longissimus Capitis :Rotates head & pulls backward
*Longissimus Cervicis:Longissimus Cervicis

*Longissmus Thoracis: Extension, lateral flexion of vertebral column, rib rotation

*iliocostalis Cervicis: Extends cervical vertebrae

* Iliocostalis Thoracis : Extension, lateral flexion of vertebral column, rib rotation

* Iliocostalis Lumborum : Extension, lateral flexion of vertebral column, rib rotation

Sydney Mullin answered 1 year ago

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