review
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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epimysium | surrounds entire muscle
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perimysium | surrounds fascicles d(groups of muscle fibers)
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endomysium | surround each individual muscle fiber
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myofibrils | 80% cell volume. striations of dark A bands and light I bands
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M line | holds thick filaments together
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Thick filaments | A band
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Thin Filament G Actin | has active sites for myosin head
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regulatory proteins bound to actin | tropomyosin, troponin
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terminal cisternae form | perpendicular cross channels
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sarcoplasmic reticulum functions in | regulating intracellular CA+ levels
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Triads | T tubule and terminal cisternae
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Available sources of ATP are depleted in | 4-6 seconds
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anaerobic pathway (gylcolysis) | glucose---pyruvic acid+ atp
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aerobic pathway (cellular respiration) | pyruvic acid---CO2+H20 +ATP + Heat.
produces 95% of atp during rest
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slow oxidative | dark red. fatigue resistant. postural muscles
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fast oxidative | red-pink. moderate fatigue resistance. leg muscles
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fast glycolitic | white, explosive. shoulder muscles
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facial nerve | VII
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orbicularis oris | purses lips
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muscles of anterior neck and throat | suprahyoid
infrahyoid
*synergists to head flexion
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suprahyoid | digastric
stylohyoid
mylohyoid
geniohyoid
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infrahyoid | sternohyoid
sternothyroid
omohyoid
thyrohyoid
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scalene muscles | lateral head movements. elevate ribs 1 and 2 during inspiration
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semispinalis capitis | synergist with sternocleidomastoid
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splenius capitis | look up to same side
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prime movers of back extension and lateral bending | erector spinae
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external intercostals | inspiration
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internal intercostals | expiration
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diaphragm | prime mover in respiration
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transversus abdominis | compresses abdomen
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rectus abdominis | 6 pack. Flexes vertebral column
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pelvic diaphragm | levator ani
coccygeus
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pectoralis minor | pulls scapula forward and downward
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serratus anterior | boxer muscle. Pulls scapula forward and downward
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prime mover of shoulder flexion | pectoralis major
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trapezius | shrugs , elevates, depresses scapula
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antagonist of rectus abdominis | erector spinae
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prime mover of shoulder abduction | deltoids
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prime mover of shoulder adduction | latissimus dorsi, pectoralis major
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which muscle crosses your leg | sartorius
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supinates forearm and hand | supinator
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pronator teres pronator quadratus | pronates forearm and hand
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brachialis connects | ulna to humerus
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tricep surae | plantar flexion (gastrocnemius,soleus)
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retracts the shoulder blades | trapezius, rhomboid major and minor
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rotator cuff | supraspinatus
infraspinatus
teres minor
subscapularis
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internal rotator of shoulder | subscapularis
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externally rotates shoulder | infraspinatus, teres minor
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two muscles that insert on the calcaneus through the achilles tendon | gastrocnemius, soleus
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