anatomy Flashcards
erector spinae
O: iliac crest, sacrum, lumbar, supraspinous ligament
I: angle of ribs and cervical TVP, TVP in thoracic area and mastoid process, SPs in thoracic regions
N: posterior rami of cervical nerves
A: extensors of vertebral column, lateral flexion of trunk
sternocleidomastoid
O: manubrium of sternum and medial clavicle
I: mastoid process of temporal lobe and nuchal line of occipital lobe
N: spinal accessory nerve
A: contralateral rotation and lateral flexion. flexion and elevation of neck
temporalis
O: temporal fossa and fascia
I: coronoid process and ramus of mandible
N: mandibular nerve
A: elevation and retraction of mandible
masseter
O: zygomatic arch
I: lateral surface of ramus of mandible
N: mandibular N.
A: elevation and protraction of mandible
rectus abdominus
O: pubic symphysis and crest
I: xiphoid process, ribs 5,6,7
N: intercostal nerves T6-T12
A: flexion of trunk, posterior tilt
external abdominal oblique
O: surface of bottom 8 ribs
I: linea alba, pubic tubercle, iliac crest
N: intercostal N. (T7-T12)
A: contralateral rotation, flexion
rhomboid major and minor
O: minor: C7-T1 major: T2-T5
I: minor: medial border of scapula, major: medial border of scapula below spine
N: Dorsal scapular N.
A: retraction, elevation of scapula and downwards rotation
trapezius
O: upper: occipital protuberance, nuchal line, C7. middle: T1-T5. lower: T6-T12
I: acromion, lateral 1/3 clavicle, spine of scapula
N: spinal accessory N.
A: extension of head, contralateral rotation of head
retraction of scapula
upwards rotation of scapula
latissimus dorsi
O: SP of T7-L5
I: bicipital groove of humerus
N: thoracodorsal N.
A: extension of arm, adduction, medial rotation
serratus anterior
O: upper 9 ribs
I: anterior surface of medial border of scapula
N: long thoracic N
A: upwards rotation of scapula, protraction of scapula
pectoralis major
O: medial scapula, upper 7 ribs
I: lateral lip of bicipital groove
N: Pectoral N.
A: flexion, adduction, medial rotation
deltoid
O: clavicle, acromion, spine of scapula
I: deltoid tuberosity of humerus
N: Axillary
A: flexion, extension, medial and lateral rotation, abduction
subscapularis
O: subscapular fossa
I: lesser tubercle of humerus
N: subscapular N.
A: medial rotation of shoulder joint
supraspinatus
O: supraspinatus fossa
I: greater tubercle of humerus
N: suprascapular N.
A: Abduction of arm
infraspinatus
O: infraspinatus fossa
I: greater tubercle of humerus
N: suprascapular N
A: lateral rotation