chapter 11 quiz Flashcards
What is the movements of the rectus abdominis?
right and left lumbar flexion, posterior pelvic rotation,
What is the origin of the rectus abdominis?
the crest of the pubis
what is the insertion of the rectus abdominis?
cartilage of the fifth, sixth, and seventh ribs and the xiphoid process
what nerve innervates the rectus abdominis?
intercostal nerve
what movements does the internal oblique perform?
lumbar flexion and posterior pelvic rotation
what is the origin of the internal oblique?
the upper half of the inguinal ligament and the interior 2/3 of the crest of the ilium and the lumbar fascia
internal oblique insertion
costal cartilage of the 8th 9th and 10th ribs and the linea alba
nerve of internal oblique
intercostal nerve
sternocleidomastoid actions
Unilateral contraction: cervical spine: neck ipsilateral flexion, neck contralateral rotation
Bilateral contraction: atlantooccipital joint/ superior cervical spine: head/neck extension; Inferior cervical vertebrae: neck flexion; sternoclavicular joint: elevation of clavicle and manubrium of sternum
sternocleidomastoid origin
anterior superior surface of the medial clavicle and manubrium of the sternum
sternocleidomastoid insertion
mastoid process
sternocleidomastoid nerve
spinal accessory nerve
Quadratus Lumborum action
lateral flexion of the ipsilateral side, stabilizes the pelvis on the lumbar spine and extends the lumbar spin, anterior pelvic rotation, lateral pelvic rotation to the contralateral side
Quadratus Lumborum origin
posterior inner lip of the iliac crest
Quadratus Lumborum insertion
1/2 length of the border of the 12th rib and transverse process of the upper 4 lumbar vertebrae
