Trunk - Name, Origin, Insertion, Action, Innervation
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85 Terms
name
Trapezius
origin
superior nuchal line, external occipital lobe, spinous process of thoracic vertebrae
insertion
upper- lateral clavicle, Middle- acromion process, Lower- medial scapular spine
action
elevates, retracts, and depresses scapula
innervation
accessory nerve (11th cranial nerve, C3, C4)
name
latissimus dorsi
origin
illiac crest, spinous processes T6-S5
insertion
bicipital groove of humerus
action
extension, adduction, and internal rotation of the arm
innervation
theracodorsal nerve
name
rhomboid major and minor
origin
major: spinous processes T2-T5
minor: spinous processes C7-T1
insertion
Major: medial border of the scapula
Minor: medial border of the scapula
action
major and minor: retractas and stabilizes scapula
innervation
major and minor: dorsal scapular nerve
name
levator scapulae
origin
transverse processes C1-C4
insertion
medial border of scapula above spine
action
elevates medial boarder of scapula
innervation
dorsal scapular nerve
name
spinalis
origin
spinous processes
insertion
spinous processes above
action
lateral spine flextion
innervation
posterior primary rami
name
longissimus
origin
transverse processes
insertion
transverse processes above
action
extends spine
innervation
posterior primary rami
name
iliocostalis
origin
iliac crest
insertion
ribs, cervical transverse processes
action
extends and laterally flexes spine
innervation
posterior primary rami
name
quadratus lumborum
origin
superior iliac crest
insertion
rib 12
action
unilateral: lateral flexion
bilateral:lubmar extension
innervation
T12-L4
name
pec major
origin
medial half of clavicle
lateral border of sternum
insertion
bicipital groove
action
adduction, medial rotation of arm
innervation
medial and lateral pectoral nerve
name
pectoralis minor
origin
ribs 3 4 & 5
insertion
coracoid process
action
draws scapula forward and down
innervation
medial pectoral nerve
name
subclavius
origin
medial boarder of 1st rib
insertion
under surface of clavicle
action
depresses and stabilizes clavicle
innervation
C5 C6
name
serratus anterior
origin
ribs 1-8
insertion
anterior surface of the medial boarder of scapula
action
protracts scapula
innervation
long thoracic nerve
name
sternocleidomastoid
origin
manubrium and clavicle
insertion
mastoid process
action
flexes and laterally rotates cervical spine
innervation
spinal accessory nerve
name
rectus abdominus
origin
pubic crest
insertion
xiphoid process
action
flexes trunk, aids in force expiration
innervation
T7-T12
name
external obliques
origin
lower 8 ribs
insertion
iliac crest and aponeurosis of rectus sheath
action
supports abdominal wall
innervation
T7-T12
name
internal oblique
origin
theraco lumbar fascia and iliac crest
insertion
costal margin and aponeurosis of rectus sheath
action
supports abdominal wall, aids in forced expiration
insertion
T7-T12
name
transverse abdominis
origin
thaco lumbar fascia
insertion
aponeurosis of rectus sheath
action
supports abdominal wall and aids in forced expiration
innervation
T7-T12