Neck/Back/Pelvis Muscles Flashcards
O: Directly deep of the rhomboids Spinous proces of C7-T3 I: Ribs 2-5 superior borders Mv: Elevation of ribs (during inspiration) NI: Intercostal nerves
Serratus Posterior Superior
O: Directly deep to LD Spinous process of T11-L2 I: Ribs 9-12 inferior borders Mv: Depression of ribs (during expiration) NI: Intercostal N
Serratus Posterior Inferior
O:Spine of T3-T6 I:C1-C3 Mv: Extension and rotate Same side NI: Middle and Lower cervical nerves
Splenius Cervicis
O:Lower half of nuchal ligament and spine of
C7-T3
I: Lateral occipital bone and mastoid process
Mv:Extend and rotate
NI:Middle and lower cervical nerves
Splenius Capitis
O: Transverse Process of T6-7
I:Articular processes of C4-6 (area between superior and inferior nuchal line)
Mv: Extends the head
NI: Greater occipital nerve
Semispinalis Capitis
O: Spinous process of T9-12 thoracic vertebrae
I: T1-2 and cervical vertebrae
Mv: Extends the vertebral column
IN: Posterior branch of spinal nerve
Erector Spinae
Origin:Sacrum, Iliac crest, ribs and TP of C4-6 Insertion: ICL, ICT, ICC M:Ext, Ipsilateral rotation Fixed: Elevation of Pelvis Contralateral rotation NI: Dorsal rami of spinal N
Iliocostalis
Sacrum, Iliac crest, TP of L1-T5
Ribs, mastoid process
LT, LC, L capitis
Longissimus
Spinous P of lower to higher & nuchal line
ST, SC,S capitis
Spinalis
Transverse Process to Spinal Process and Occipital bone (SScapitis, SS cervicis & SS T
Extension, contralateral rotation
Semispinalis
Sacrum, TP to SP (higher)
Ext, Contralateral rotation (fixed: elevation of pelvis, ipsilateral rotation)
Multifidus
TP to Lamina 1-2 level superiorly
Rotatores
O: Crest of Pubis
I: Costal cartilage of 5th,6th, and 7th
Mv:Trunk flexion, compression (moves pelvis towards chest)
NI: 7-12 intercostal N
Rectus Abdominis
Lower 8 ribs
I:Iliac crest and linea alba 8-12 intercostal N
Rotates contralaterally
External Oblique
Inguinal ligament, iliac crest
10,11,12 ribs abdominal aponeurosis 8-12
Intercostal N
Rotates to same side
Internal Oblique
Inguinal ligament last six ribs
Abdominal aponeurosis, compression,7-12 N
Transverse Abdominis
O: Iliac crest
I: 12 the rib, transverse process of L2-L5
Mv: Trunk bending (lateral flexion) and hip hiking
NI: 12th thoracic and 1st lumbar
Quadratus Lumborum
(CN VII)
Styloid process to hyoid
Elevates and retracts hyoid during swallowing; elongates floor of mouth
Stylohyoid
(CN V3 and CN VII)
Mandible to hyoid to mastoid
Anterior (V3) and posterior (VII) belly joined by intermediate tendon at hyoid
Depresses mandibleCareers against resistance or elevates hyoid bone during swallowing or eating
Trigeminal and Facial nerves
Digastric
(CN V3)
Mandible tomylohyoid raphe and body of hyoid
Elevates hyoid, floor of mouth and tongue during swallowing and speaking
Mylohyoid