Muscles-AXIAL Flashcards
occipitofrontalis
frontal bely, occipital belly
Temporalis
above ear
Orbicularis oculi
A:
A: closes eye
Zygomaticus major
A:
A: elevates corner of mouth
Orbicularis oris
A:
A: purses lips
Masseter
A:
A: elevates jaw
Platysma
Digastric
Mylohyoid
Sternohyoid
Sternothyroid
Thyrohyoid
Scalene(s)
Sternocleidomastoid
medial head
lateral head
flexes neck
Pectoralis major
O.I.A.
O: sternal end of clavicle,
sternum, and cartilage of ribs 1-6
I: greater tubercle of humerus
A: flexes arm
Pectoralis minor
A:
A: protracts and rotates scapula
inferiorly
serratus anterior
External intercostal(s)
A:A: elevates ribs
angle in
Internal intercostal(s)
A:depresses ribs
Rectus abdominis
A:
flexes vertebral column
External oblique
Internal oblique
Transversus abdominis
ext- angles down and in
int- angles out
Linea alba
structure
Diaphragm
Trapezius
Latissimus dorsi
O.I.A.
O: lower six thoracic vertebrae via thoracolumbar fascia, lumbar vertebrae, iliac crest
I: intertubercular sulcus of
humerus
A: extends arm
Splenius capitis
A:
extends neck
Levator scapulae
Rhomboid minor
Rhomboid major
Teres major
inserts anterior humerus
Teres minor
O.I.A.
O: lateral border of scapula
I: greater tubercle of humerus
A: laterally rotates arm (synergist to infraspinatus)
Erector Spinae Group:
Name 3
A:
Erector Spinae Group: Spinalis (medial) Longissimus (intermediate) Iliocostalis (lateral) A: extends vertebral column
Subscapularis
Infraspinatus
O.I.A.
O: infraspinous fossa of scapula
I: greater tubercle of humerus
A: laterally rotates arm
Supraspinatus
O.I.A.
O: supraspinous fossa of scapula
I: greater tubercle of humerus
A: abducts arm
