Muscles of Spine/Thorax Flashcards
What are the 3 muscle groups that comprise the Erector Spinae Group and what do they do?
“I”- Iliocostalis, “Love”-Longissimus, Spagetti”- Spinalis. They controle extension and lateral flexion of the vertebral column.
The Erector Spinae are ______ and they run from the ______ to the _______ along the _______ and _______.
superficial, sacrum, occiput, spinous processes, ribs.
The origin of the Quadratis Lumborum is the ____, the insertion is ______ and the action is to _____.
O:posterior iliac crest, I: The last rib and TP’s of L1-4, A:Laterally tilt pelvis and lateral flexion of spine.
The origin of the Multifidi is ____ the insertion is _____ and the action is to _____.
O: Sacrum and TP’s of lumbar through cervicals, I: SP’s of lumbars through C-2 (2-4 vertebrae), A: Rotation of Spine
The Posterior Group of The Muscles of the Pectoral girdle are: _______, ________ and _________.
Trapezius, Levator Scapula and Rhomboids (major and minor)
The origin of the Trapezius is ___, the insertion is ____ and the action is to ____.
O:Occiput and SP’s C1 through T-12 (Ligamentum Nuchae) I: Spine of scapula and acromion, A:Scapular retraction/elevation,cervical extension/rotation/lateral flexion
The origin of the Levator Scapula is ____, the insertion is ______ and it’s action is to _____.
O: TP’s C-1 through 4 I:Superior medial border of Scapula A:Scapular Elevation, Lateral flexion (C-S),rotate neck to same side
The origin of the Rhomboids (major and minor) are _____, the insertion is ______ and their action is to _________.
O: SP’s C-7 through T-5, I: Medial border of Scapula, A: Adduct (retract) Scapula
Of the ___ muscles that cross the shoulder and insert on the Humerus, which two are Axial and what are their Actions on the Humerus?
9 , Pectoralis Major - A: Flexes, Adducts , Medially Rotates,
Latissimus Dorsi A: Adducts and Medially Rotates
The origin of the Pectoralis Major is _____, the insertion is _____, and its action is to _______.
O: Medial Clavacal, Sternum and Intercostal cartilage (1-6 ribs) I: Crest of the greater tubercle of Humerus, A:Extend and Adduct Humerus
The origin of the Latissimus Dorsi is _____, the insertion is _______ and it’s action is to ______.
O: SP’s T6-12, Ribs 8-12,TL Aponeurosis,Iliac Crest, I: Crest of Lesser Tbercle of Humeros A:Extend and Adduct Humeros
The origin of the Rectus Abdominis is ____ the insertion is _____ and its action is to _____.
O: Pubic Crest/Pubic Symphysis I: Cartilage of Ribs 5-7 and Zyphoid Process A: Flex the Spine
The origin of the External Obliques is ____ the insertion is ____ and it’s action is to ____.
O: Lower 8 Ribs I:Anterior Iliac Crest (Linea Alba), A:Lateral flexion of spine to same side, and rotation of spine to opposite side
The main muscles of respiration are the _____, _____ and _______.
External Intercostals, Internal Intercostals and Innermost Intercostals
