Exam 2 OINA Flashcards
(27 cards)
Trapezius
O - External occipital protuberance, ligamentum nuchae, spinous processes C7-T12
I - Posterior border of lateral third of clavicle, acromion process, spine of scapula
N - Spinal root of accessory n. CN XI
A - Upper fibers: elevation; middle fibers: retraction; lower fibers: depression
Latissimus Dorsi
O - Spinous processes of T7-L5, thoracolumbar fascia, iliac crest, inferior 3 or 4 ribs, inferior angle of scapula
I - Medial lip of intertubercular groove of humerus
N - Thoracodorsal n.
A - Extention, adduction, medial rotation of humerus; elevates body when climbing
Levator Scapulae
O - Posterior tubercles of transverse processes of C1-C4
I - Superior part of medial border of scapula
N - Dorsal scapular n. C4-C5
A - Elevation of scapula, rotation of head to same side
Rhomboid Major
O - Spinous processes of T2-T5
I - Medial border of scapula from spine to inferior angle
N - Dorsal scapular n. C4-C5
A - Retraction and downward rotation of scapula
Rhomboid Minor
O - Ligamentum nuchae, spinous processes of C7-T1
I - Medial border of scapula from spine to superior angle
N - Dorsal scapular n. C4-C5
A - Retraction and downward rotation of scapula
Serratus Posterior Superior
O - Ligamentum nuchae, spinous porcesses of C7-T3
I - 2nd-5th ribs
N - Ventral primary rami of first 3 or 4 thoracic n.
A - Elevation of superior ribs to increase size of thorax
Serratus Posterior Inferior
O - Spinous processes of T11-L2
I - Inferior 3 or 4 ribs
N - Ventral primary rami of last 4 thoracic n.
A - Depression of inferior 3 or 4 ribs to prevent superior pull by diaphragm
Splenius Capitis
O - Ligamentum nuchae, spinous processes of C7-T3
I - Mastoid process, occipital bone
N - Dorsal primary rami of C1-C6
A - Rotation of head/neck to same side, head/neck extension
Splenius Cervicis
O - Spinous processes of T3-T6
I - Transverse processes of C1-C4
N - Dorsal primary rami of C1-C6
A - Rotation of head/neck to same side, head/neck extension
Iliocostalis Lumborum
O - Arises from iliac crest
I - Angles of lower 6 ribs
N - Dorsal primary rami
A - Extension and lateral flexion of vertebral column
Iliocostalis Thoracis
O - Arises from lower 6 ribs
I - Angles of upper 6 ribs
N - Dorsal primary rami
A - Extension and lateral flexion of vertebral column
Iliocostalis Cervicis
O - Arises from upper 6 ribs
I - Transverse processes of C4-C6
N - Dorsal primary rami
A - Extension and lateral flexion of vertebral column
Longissimus Thoracis
O - Lower lumbar spinous processes and sacrum
I - Lower 9 ribs and associated transverse processes
N - Dorsal primary rami
A - Extension and lateral flexion of vertebral column
Longissimus Cervicis
O - Arises from transverse processes of T1-T4 or T6
I - Transverse processes of C2-C6
N - Dorsal primary rami
A - Extension and lateral flexion of vertebral column
Longissiums Capitis
O - Arises from lower 4 cervical vertebrae
I - Mastoid process
N - Dorsal primary rami
A - Extension and lateral flexion of vertebral column
Spinalis
O - Spinous processes of T11-L2
I - Spinous processes of upper 4 to 8 thoracic vertebrae
N - Dorsal primary rami
A - Extension and lateral flexion of vertebral column
Semispinalis (Capitis, Cervicis, Thoracis)
O - Transverse processes of C4-T12
I - Occipital bone (fibers tend to span 5-6 segments)
N - Dorsal rami of cervical spinal n.
A - Bilateral: extension of head; unilateral: rotation of head to same side
Multifidus
O - Vertebral arches (C2-S4)
I - Spinous processes 1-3 vertebrae from Origin (C2-S4)
N - Dorsal rami of spinal n.
A - Unilateral: flexion and lateral rotation to opposite side of trunk; bilateral: extension of trunk
Rotatores
O - Transverse processes of each vertebra
I - Base of spinous process of superior vertebra
N - Dorsal rami of spinal n.
A - Rotation of superior vertebra to opposite side (probably more proprioceptive than anything)
External Oblique
O - External surface of 5th-12th ribs
I - Linea alba, pubic crest, iliac crest, pubic symphysis
N - Inferior 5 thoracic n. (T7-T11), subcostal n. (T12), iliohypogastric n, (L1)
A - Flexion and rotation of trunk, compress abdominal contents
Internal Oblique
O - Thoracolumbar fascia, anterior iliac crest, lateral half of inguinal ligament
I - Linea alba, pubic crest, inferior surface of 10th-12th ribs
N - Thoracoabdominal n. (ventral rami of T6-T12 spinal nerves), 1st lumbar n.
A - Flexion and rotation of trunk, compress abdominal contents
Transversus Abdominus
O - Thoracolumbar fascia, anterior iliac crest, lateral third of inguinal ligament, inferior surface of costal cartilages 7-12
I - Linea alba, pubic crest, pubic symphysis
N - Thoracoabdominal n. (ventral rami of T6-T12 spinal nerves), 1st lumbar n.
A - Compress and support abdominal viscera
Rectus Abdominus
O - Pubic symphysis, pubic crest
I - Xyphoid process, 5th and 7th costal cartilages
N - Thoracoabdominal n. (ventral rami of T6-T12 spinal nerves)
A - Flexion of trunk, tension of anterior abdominal wall
Psoas Major
O - Transverse processes, bodies, and IV discs of T12-L5
I - Lesser trochanter of femur with iliacus
N - Ventral primary rami of L1-L3
A - Flexion of thigh, flexion and lateral flexion of trunk
