Anatomy Quiz 1 Flashcards
Descending Trapezius
O: Spinous process C1-C7, Occipital bone
I: Clavicle
Inn: Motor Accessory Nerve XI (C3 and C4)
A: Elevates and superiorly rotates scapula
Transverse Trapezius
O: Spinous process T1-T4
I: Acromion
Inn: Motor Accessory Nerve XI (C3 and C4)
A: retract scapula
Ascending Trapezius
O: Spinous Process T5-T12
I: Scapular spine
Inn: Motor Accessory Nerve XI (C3 and C4)
A: depress scapula
Latissimus Dorsi
O: Spinous process T7-T12, sacrum, thoracolumbar fascia, ribs 10-12
I: Intertubercular groove of humerus
Inn: Thoracodorsal nerve C6-C8
A: extends, adducts, and medially rotates humerus
Levator Scapulae
O: Transverse process of C1-C4
I: scapula (superior angle)
Inn: Dorsal scapular nerve
A: elevates scapula!, tilt glenoid cavity inferiorly, tilt neck to the side
Rhomboid Major
O: Spinous process T2-T5
I: medial border of scapula below the spine of the scapula
Inn: Dorsal scapular nerve
A: retract, elevate, and steady the scapula
Rhomboid Minor
O: Nuchal Ligament, spinous process C7-T1
I: medial border of scapula at the spine of the scapula
Inn: Dorsal scapular nerve
A: retract (adduct), elevate, and steady the scapula
Serratus Posterior Superior
O: Nuchal Ligament, spinous process C7-T3
I: ribs 2-5
Inn: anterior rami of upper thoracic nerve
A: elevate ribs during respiration
Serratus Posterior Inferior
O: spinous process T11-L2
I: ribs 9-12
Inn: anterior rami of upper thoracic nerve
A: depress ribs 9-12 during expiration
Splenius Cervicis
O: Nuchal Ligament, spinous process C7-T6
I: tubercles of transverse process of C1-C3/C4
Inn: Posterior Rami
A: laterally flex and rotate to active side, extend head and neck
Splenius Capitis
O: Nuchal Ligament, spinous process C7-T6
I: Mastoid process and lateral superior nuchal line of occipital bone
Inn: Posterior Rami
A: laterally flex and rotate to active side, extend head and neck
Iliocostalis
O: broad tendon from iliac crest and sacrum
I: lower ribs and cervical transverse process
Inn: Posterior Rami
A: laterally flex the vertebral column, extend vertebral column and head
Longissimus
O: broad tendon from iliac crest and sacrum
I: ribs, mastoid process, transverse process of all thoracic vertebra and C2-C6
Inn: Posterior Rami
A: Laterally flex vertebral column, extend vertebral column and head
Spinalis
O: broad tendon from iliac crest and sacrum
I: spinous process in T1-T8 and C2
Inn: Posterior Rami
A: laterally flex vertebral column, extend vertebral column and head
Semispinalis
O: transverse process of C4-T12
I: run superomedially to occipital bone and spinous process in thoracic and cervical, spanning 4-6 segments
Inn: Posterior Rami
A: extends head and thoracic and cervical regions, rotates them contralaterally
Multifidus
O: posterior sacrum, posterior superior iliac spine, mammillary process of lumbar vertebra, transverse process of T1-T3, articular process of C4-C7
I: run superomedially to spinous process located 2-4 segments above origin
Inn: Posterior Rami
A: stabilize vertebra
Rotatores
O: transverse process
I: lamina and transverse and spinous process of vertebra immediately or 2 segments above
Inn: Posterior Rami
A: stabilize vertebra, assist with extension and rotatory movements
Interspinales
O: Superior surface of spinous process in cervical and lumbar vertebra
I: inferior surface of spinous process superior to vertebra
Inn: Posterior Rami
A: aid in extension and rotation
Intertransversarii
O: transverse process of cervical and lumbar vertebra
I: transverse process of adjacent vertebra
Inn: Posterior and anterior rami
A: aid in lateral flexion, stabilize vertebral column
Levatores Costarum
O: transverse process of C7-T11
I: rib just below
Inn: Posterior Rami of C8-T11
A: assist with contralateral rotation
Rectus Capitis Posterior Major
O: spinous process of C2 (axis)
I: lateral aspect of inferior nuchal line on occipital bone
Inn: Posterior Rami of C1
A: extension of head, rotation of face to same side as muscle
Rectus Capitis Posterior Minor
O: posterior tubercle of posterior arch of C1 (atlas)
I: medial part of inferior nuchal line of the occipital bone
Inn: Posterior Rami of C1
A: extend head
Obliquus Capitis Superior
O: transverse process of C1 (atlas)
I: occipital bone between superior and inferior nuchal lines
Inn: Posterior Rami of C1
A: extend head, laterally flex head to the same side as the muscle
Obliquus Capitis Inferior
O: spinous process of C2 (axis)
I: transverse process of C1 (atlas)
Inn: Posterior Rami of C1
A: rotate face to same side
