Back Muscles Flashcards
What is the Shape of the Levator Scapulae
Strap-Like
What is the location of the Levator Scapulae
Deep to Trapezius
What is the Origin of the Levator Scapulae
Posterior Tubercles of TVP’s C1-C4 Vertebrae
What is the Insertion of the Levator Scapulae
Medial Border of the Scapula, Superior to the root of the Scapula Spine (superior angle)
What are the Actions of the Levator Scapula
- Scapular Elevation & Inferior Rotation
- Bilateral: C/S Extension
- Unilateral: Ipsilateral Side Flexion & Rotation of C/S
What is the Shape of Rhomboid Major
Broad Band
How much wider is Rhomboid Major to Rhomboid Minor
3-4 times
Where is the Location of Rhomboid Major
Deep to Trapezius
What is the Origin of Rhomboid Major
SP’s of T2-T5 Vertebrae
What is the Insertion of Rhomboid Major
Medial Border of Scapula from Root of the Spine - Inferior Angle
What are the Actions of Rhomboid Major & Minor
- Retract Scapula
- Inferior Rotation of Scapula
- Stabilize Scapula
What is the Origin of Rhomboid Minor
- Nuchal Ligament
- SP’s of C7-T1 Vertebrae
What is the Shape of the Trapezius
Very Large Diamond with 3 Parts
What is the Fibre Direction of the 3 Parts of Trapezius
- Upper Traps - Descending - Inferolateral
- Middle Traps - Transverse - Horizontal
- Lower Traps - Ascending - Superolateral
What are the Origins of the Trapezius
- Inion
- Medial 1/3 of Superior Nuchal Line
- Ligamentum Nuchae
- SP’s of C7-T12 Vertebrae
What are the Insertions of the Trapezius
- Lateral 1/3 of Clavicle
- Acromion
- Spine of Scapula
What are the Actions of the Upper Trapezius
- Elevate Scapula
- Bilateral: C/S Extension
- Unilateral: Ipsilateral Flexion & Contralateral Rotation of C/S
What is the Action of the Middle Trapezius
Retract Scapula
What is the Action of the Lower Trapezius
Depress Scapula
What is the Shape of the Latissimus Dorsi
Large, Fan-Shaped
Where is the Location of the Latissimus Dorsi
- Lower 1/2 of Back
- Upper Fibres Deep to Trapezius
What is the Fibre Direction of the Latissimus Dorsi
Superolateral
What are the Origins of the Latissimus Dorsi
- SP’s of T7-T12
- Thoraculumbar Fascia
- Iliac Crest
- Inferior 3/4 Ribs
What is the Insertion of the Latissimus Dorsi
Floor of Bicipital Groove of Humerus
What is the Action of the Latissimus Dorsi
Extends, Adducts & Medially Rotates the Humerus
What is the Shape of the Serratus Posterior Superior
Small, Thin & Flat
Where is the Location of the Serratus Posterior Superior
Junction of Neck & Back; Deep to Rhomboids
What is the Fibre Direction of the Serratus Posterior Superior
Inferolateral
What is the Origin of the Serratus Posterior Superior
SP’s of C7-T3
What is the Insertion of the Serratus Posterior Superior
Superior Border of Ribs 2-4
What is the Action of the Serratus Posterior Superior
Elevate Ribs
What is the Shape of the Serratus Posterior Inferior
Small, Thin & Flat
Where is the Location of the Serratus Posterior Inferior
Junction of Thorax & Lumbar Region (low back)
What is the Origin of Serratus Posterior Inferior
SP’s of T11-L2
What is the Insertion of Serratus Posterior Inferior
Inferior Border of Ribs 8-12
What are the Actions of Serratus Posterior Inferior
- Respiration
- Depress Ribs
What is the Shape of Splenius Capitis
Thin, Strap-Like
What is the Shape of Splenius Cervicis
Thin, Strap-Like
Where is the Location of Splenius Capitis
Posterior Aspect of C/S
Where is the Location of Splenius Cervicis
Posterior Aspect of C/S