Important muscles (chiro essentials pg 45-47) Flashcards
What is the origin of the sternocleidomastoid
Mastoid
Superior nuchal line
What is the insertion of the sternocleidomastoid
Manubrium
medial clavicle
What innervates the Sternocleidomastoid
CN XI
ventral rami C2 C3
What is the action of the Sternocleidomastoid
Tilt head to shoulder of same side
Rotate head to opposite side
What is the origin of the trapezius
Superior nuchal line EOP ligamentum nuchae C7 spinous All thorasic vertebra
What is the insertion of the trapezius
Lateral Clavicle
Acromion process
Spine of scapula
What innervates the Trapezius
Spinal part CN XI
C3
C4
What is the action of the Trapezius
Shrugs
Retracts + rotate scapula
What is the origin of the Latissimus dorsi
Lower throacic spinous process
Lumbar spinous process
What is the insertion of the Latissimus dorsi
Bicipital groove
What innervates the Latissimus dorsi
Thoracodorsal nerve (C6 C7 C8)
What is the action of the latissimus dorsi
Adducts arm
Extend arm
Medially rotate arm
What is the origin of the levator scapulae
Transverse process C1 C2
posterior tubercle C3 C4
What is the insertion of the levator scapulae
Spine of scapula
What is the innervation of the Levator scapulae
Dorsal Scapular nerve (C5)
What is the action of the Levator scapulae
Elevate the scapula
What is the origin on the Scalenus anterior
Anterior tubercle or C3 C4 C5 C6
What is the insertion of the anterior scalene
First rib
What innervates tthe anterior scalene
C4 C5 C6
What is the action of the anterior scalene
Ipsilateral lateral flexion of neck
What is the origin of the middle scalene
Transverse of C2-C6
What is the insertion of the middle scalene
1st wib
What innervates the middle scalene
C3-C7
What is the action of the middle scalene
Ipsilateral lateral flexion of the neck
What is the origin of the serratus anterior
lateral aspect of upper 8 ribs
What is the insertion of the serratus anterior
Medial aspect of scapula
What innervates the serratus anterior
Long thoracic nerve (C5, C6, C7)
What is the action of the serratus anterior
Draws scapula forward
Rotates the scapula
What is the origin of the Deltoid
Clavicle
Acromion process
Spine of Scapula
What is the insertion of the deltoid
Deltoid tubercel of humerous
What innervates the deltoid
Axillary nerve (C5 C6)
What is the action of the deltoid
abducts arm (15-90 degrees) Anterior = flex arm middle = medially rotate arm Posterior = medially rotate arm
What is the origin of the pectoralis major
Sternum
Upper 6 costal cartilage
Clavicle
What is the insertion of the pectoralis major
Bicipital groove
What innervates the pectoralis major
Medial (C5-C7) and lateral (C8-T1) pectoral nerve
what is the origin of the supraspinatus
Supraspinatus fossa
What is the insertion of the supraspinatus
Greater tuberosity of humerus
What innervates the supraspinatous
Suprascapular nerve (C5-C6)
What is he action of the supraspinatous
Initiates abduction of the arm (0-15 degrees)
What is the origin of the infraspinatous
Infraspinatous fossa
What is the insertion of the infraspinatous
Greater tuberosity of humerous
What innervates the infraspinatous
Suprascapular nerve (C5-C6)
What is the action of the infraspinatous
Externally rotates the humerous
What is the origin of the teres major
Lateral aspect of scapula
What is the insertion of the teres major
Bicipital groove