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Myology 1
Lecture 10
Question | Answer |
---|---|
superficial muscles of the posterior neck | trapezius,splenius capitis,splenius cervicis,levator scapulae. |
traps and SCM nn | CN 11 spinal accessor nn,CNXI |
suboccipital nn | suboccipital nn |
scalenes,preverterbrals, adn splenius capitis/cervicis nn | cervical spinal nn |
platysma nn | facial expression nn, CN VII, 7 |
infrahyoids nn | cervical nn |
suprahyoids nn | cranial nn |
upper trapezius OIAN | O=EOP,superior nuchal line,nucal ligament and SP of C7-T12.I=lateral 1/3 of clavicle and acromion.A=elevates,upwardly rotate and retract scap |
splenius capitis OAIN | O=nuchal ligament and SP of C7-T4,I=mastoid process of the occiput.A=bilaterally extends neck.unilaterally lateral flex and ipsilateral rot of neck.N=posterior rami of cervical spinal nn |
splenius cervicis OAIN | O=SP of T3-T6.I=TP of C1-C3.A=bilat extension of neck.unilat lateral flexion and ipsilateral rotation of neck.N=posterior rami of cervical spinal nn |
levator scapulae OAIN | O=TP of C1-C4.I=medial border of scap,from sup angle to root of spine.A=elevates,retracts and downwardly rot scap.rev mm action=bilat allows for extension of neck/unilat lateral flex neck and rotate to same side.N=dorsal scapular nn |
deep muscles of the posterior neck | suboccipitals |
suboccipital muscles | deep mm of posterior neck,rectus capitis posterior major,rectus capitis posterior minor,obliquus capitis inferior,obliquus capitis superior |
rectus capitis posterior major OIAN | O=SP of axis C2,I=occiput(lateral aspect).A=bilat extends head,unilat lateral flex and ipsilateral rot head.N=suboccipital nn |
rectus capitis posterior minor OIAN | O=post tubercle of atlas C1.I=occiput.A=bilat extends head.N=suboccipital |
obliquus capitis inferior OIAN | O=SP of axix C2.I=TP of atlas C1.A=pivot jt=rotation,ipsilateral rot atlas.N=suboccipital |
obliques capitis superior OIAN | O=TP of atlas C1.I=occiput.A=bilat extends head.unlilat lateral flex head.N=suboccipital |
suboccipital triangle | RCPM,OCS,OCI.covered by layer of dens fibro-fatty tissue.beneath semispinalis.floor formed by occipito-atlantal membrane and post arch of atlas. |
trapezius | tapezoid shape,superficial in neck and back.3 functional parts-upper,middle and lower traps. all retraction of scapula |
upper traps | elevate scap,retract |
middle traps | adduct scap,retract |
lower traps | depress scap,retract |
splenius capitis | shape like bandage=narrow rectangle attaches onto head.bilat form a V,aka golf tee |
splenius cervicis | bilat form V,attach to cervical spine |
levator scapulae | twist in mm at midpoint=mistaken for trigger point.trigger point usually superior angle of scap. |