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ch 8
skeletal muscle groups
| Question | Answer |
|---|---|
| muscles move their____ bones | insertion |
| facial muscles | orbicularis oculi, orbicularis oris, zygomaticus |
| muscles of mastication (jaw) | masseter and temporal |
| sternocleidomastoid | flexes head |
| trapezius | elevates shoulders and extends head |
| muscles that move upper extremities | pectoralis major, latissimus dorsi, deltoid, biceps brachii, triceps brachii |
| pectoralis major | flexes arm |
| latissimus dorsi | extends arm |
| deltoid | abducts arm |
| biceps brachii | flexes forearm |
| triceps brachii | extends forearm |
| muscles of trunk | abdominal- rectus + transversus abdominus and external +internal oblique respiratory- intercostal muscles, diaphram |
| muscles of lower extremities | iliopsoas, gluteus maximus, adductor muscles, hamstring muscles, quads, tibialis anterior, gastrocnemius, peroneus group |
| iliopsoas | flexes thigh |
| gluteus maximus | extends thigh |
| adductor muscles | adduct thighs |
| hamstring muscles | flex leg : semimembranosus, semitendinosus, biceps femoris |
| quadriceps femoris group | extends lower leg; rectus femoris, vastus muscles |
| tibialis anterior | dorsiflexes foot |
| gastrocnemius | plantar flexes foot |
| peroneus group | flex foot |