Myology Flashcards
suboccipital triangle contents
suboccipital nerve and vertebral artery
name the superior lateral border of the suboccipital triangle
superior oblique
name the medial border of the suboccipital triangle
rectus capitis posticus major
name the inferior lateral border of the suboccipital triangle
inferior oblique
which artery traverses through the suboccipital triangle
vertebral artery
which nerve traverses through the suboccipital triangle
suboccipital nerve
muscles of superficial neck
platysma and SCM
suprahyoid muscles (4)
digastric (2 bellies), stylohyoid, mylohyoid, geniohyoid
infrahyoid muscles (TOSS)
sternohyoid, sternothyroid, omohyoid (2 bellies), thyrohyoid
head and neck vertebral muscles
longus colli, scalenus anterior medius and posterior
muscles of mastication
temporalis, masseter, medial (internal) pterygoid, lateral (external) pterygoid
roof of suboccipital triangle
semispinalis capitis muscle
floor of suboccipital triangle
posterior atlanto-occipital membrane
deep muscles of the back
multifidus, rotatores, intertransversarii, interspinalis, iliocostalis, longissimus, spinalis
erector spinae muscle group (i love spinal) lat to med
iliocostalis, longissimus, spinalis
muscles of thorax
external intercostals, internal intercostals, transverse thoracic, subcostalis
muscles of anterior abdominal wall
external oblique, internal oblique, transverse, rectus abdominis, cremaster
muscles of posterior abdominal wall
quadratus lumborum, psoas major, psoas minor
muscles of lateral pelvis wall
piriformis, obturator internus
muscles of pelvic floor
levator ani muscles ( pubococcygeus, puborectalis, iliococcygeus) coccygeus
muscles of urogenital diaphragm (deep perineus)
sphincter urethrae, deep transverse perinei
superficial perineum muscles
ischicavernosus, bulbospongiosus, superficial transversus perinei
piriformis origin
anterior sacrum and sacrotuberous ligament
piriformis insertion
greater trochanter
piriformis innervation
S1-S2
piriformis action
external hip rotation, abduction of thigh
