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A&P lab exam II
muscle & action
| Question | Answer |
|---|---|
| masseter | closes jaw, elevates mandible |
| temporalis | closes jaw, elevates & retracts mandible |
| orbicularis oculi | closes eye, blinkin, squinting |
| orbicularis oris | closes mouth, purses & protrudes lips |
| sternocleidomastoid | both sides together -> neck flexion acting independently -> rotates head toward opposite shoulder |
| trapezius | elevate, medially rotate, retract, depress scapula |
| deltoid | princliple abductor of the arm |
| latissimus dorsi | extend, adduct, medially rotate arm |
| suprasinatus | initiate abduction of arm |
| infraspinatus | laterally rotate arm |
| teres minor | laterally rotate arm |
| teres major | medially rotate, adduct, extend arm |
| subscapularis | medially rotate arm |
| rhomboideus minor | retract, elevate, laterally rotate scapula |
| rhomoideus major | retract elevate laterally rotate scapula |
| erector spinae | exten vertebral column |
| external oblique | flex & rotate vertebral column, increase abdominal pressure |
| internal oblique | flex & rotate vertebral column, increase abdominal pressure |
| rectus abdominus | flex & rotate vertebral column, increase abdominal pressure |
| transversus abdominus | increase abdominal pressure |
| pectoralis major | flex, adduct, medially rotate arm |
| pectoralis minor | depress, protract, laterally rotate scpula |
| serratus anterior | protract scapula (prevents winging) |
| coracobrachialis | flex shoulder |
| biceps brachii | flex elbow, supinate forearm |
| brachialis | flex elbow |
| brachioradialis | flex elbow |
| triceps brachii | extend elbow |
| anterior compartment of forearm | flex & pronate wrist & hand |
| posterior compartment of forearm | extend & supinate wrist & hand |
| gluteus maximus | extends, laterally rotates, adbucts thigh |
| sartorius | flex, abduct thigh, flex knee |
| gracilis | adduct thigh flex knee |
| biceps femoris | extend thigh flex knee |
| semimembranosus | extend thigh flex knee |
| semitendinosus | extend thigh flex knee |
| rectus femoris | extend knee, flex thigh |
| vastus lateralis, medialis, & intermedius | extend knee |
| gastrocnemius | platarflex foot |
| soleus | plantarflex foot |
| tibialis anterior | dorsiflex foot |