Neck, Spine & Abs Flashcards
Sternocleidomastoid
Origin: Sternum and clavicle (and manubrium)
Insertion: Mastoid process
Function: Flexion of neck, lateral flexion of neck, rotation of neck
Scalenus anterior & medius
Origin: Cervical vertebrae
Insertion: First rib
Function: lateral flexion of neck, rotation of neck, elevate rib for inhalation
Erector Spinae Group: Spinalis
Origin: Cervical and Thoracic vertebrae
Insertion: ABOVE cervical and thoracic vertebrae
Function: Extension of spine/trunk, Lateral flexion of spine/trunk
Erector Spinae Group: Longissimus
Origin: Cervical, Thoracic and Lumbar vertebrae
Insertion: Mastoid process, cervical and thoracic vertebrae
Function: Extension of spine/trunk, Lateral flexion of spine/trunk, Extension of neck, Lateral flexion of neck
Erector Spinae Group: Iliocostalis
Origin: Sacrum, lumbar vertebrae and ribs
Insertion: ribs and cervical vertebrae
Function: Extension of spine/trunk, Lateral flexion of spine/trunk
Intercostals
Origin: Inferior aspect of ribs
Insertion: Superior aspect of ribs
Function: Elevate and depress ribs to breath (exhalation)
Diaphragm
Origin: Sternum, ribs and lumbar vertebrae
Insertion: Central tendon
Function: Increase thoracic cavity volume drawing air in while breathing (Inhalation)
Rectus Abdominis
Origin: Pubis Crest and Symphysis Pubis
Insertion: Xiphoid Process and inferior ribs
Function: Flexion of spine/trunk, exhalation
External Oblique
Origin: Lower 8 ribs
Insertion: Iliac crest and pubis
Function: Rotation of spine/trunk, Lateral flexion of spine/trunk, Flexion of spine/trunk, Exhalation
Flexion of Spine/Trunk (agonist & antagonistic pairs)
Agonist:
External Oblique
Rectus Abdominis
Antagonist:
Spinalis
Longissimus
Iliocostalis
Extension of Spine/Trunk (agonist & antagonistic pairs)
Agonist:
Spinalis
Longissimus
Iliocostalis
Antagonist:
External Oblique
Rectus Abdominis
Lateral Flexion of Spine/Trunk (agonist & antagonistic pairs)
Agonist: External Oblique Spinalis Longissimus Iliocostalis
Antagonist: OTHER SIDE External Oblique Spinalis Longissimus Iliocostalis
Rotation of Spine/Trunk (agonist & antagonistic pairs)
Agonist:
External Oblique
Antagonist: OTHER SIDE
External Oblique
Flexion of Neck (agonist & antagonistic pairs)
Agonist:
Sternocleidomastoid
Antagonist:
Longissimus
Extension of Neck (agonist & antagonistic pairs)
Agonist:
Longissimus
Antagonist:
Sternocleidomastoid