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muscle funct&nerves

back & lowe extremeties

trapezius -elevation, rotation, & retraction of scapula, -helps in adduction-spinal root of accessory nerve
levator scapulae -elevates scapula-dorsal scapular nerve
rhomboid maj & minor -retraction of scapula medially-dorsal scapular nerve
lattisimus dorsi -adduction, extension of arm, raises body toward arm when climbing-thoracodorsal nerve
serratus posterior superior -rib elevation-
serratus posterior inferior -accessory in respiration-intercostal nerves
intrinsic muscles of back -erect posture, 2 splenii rotate head-all by spinal dorsi rami
suboccipital triangle -turning head backwards & laterally-suboccipital nerve
Tensor fascia latae -abduction, flexion of thigh, protects knee joints-superior gluteal nerve
gluteas maximus powerful extensor of hip joint, active in rising, sitting or climbing-inferior gluteal nerve
gluteus medius & minimus -abduction, keeps pelvis level when opposite leg is raised- superior gluteal nerve
piriformis -abductor of the thigh, keeps femur head in acetabulum-sacral plexus
obturator internus -abductor of thigh, controls balance-nerve to obturator internus
Superior gemellus -same as obturator internus-nerve to obturator
inferior gemellus -same as obturator internuss
Quadratus femoris - same as obturator internus.-
hamstring -flexers of knee joint extensor of hip joint-tibial nerve
biceps femoris long head -extension at hip-tibial nerve
biceps femoris short head -may be absent-common peroneal nerve
semtendineous -extension at hip, medial rotationat knee-tibial nerve
semimembranous -hip extensor, knee flexor-tibial nerve
adductor magnus -powerful adductor, hip extensor-
soleus muscle -sustain motion-tibial nerve
gastrocnemius -fast movements-tibial nerve
plantaris muscles -active in walking-tibial nerve
tibialis posterior -plantar flexion & supination of the foot-tibial nerve
flexor hallucis longus. -plantar flexion & supination of the foot.-tibial nerve.
flexor digitorum longus -plantar flexion. & supination of the foot-Tibal Nerve
popliteus muscle flexion & unlocking of knee, protection of lateral miniscus-tibial nerve
Created by: xogcu8chickox