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38 Cards in this Set
- Front
- Back
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Masseter
(O/I and action?) |
elevate mandible
zygomatic/mandible |
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Temporalis
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elevate mandible
temporal/mandible |
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Pterygoids
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elevate/protract mandible
lateral excursion of mandible greater wing of sphenoid/mandible |
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Trapezius
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elevate/adduct scapula
helps you shrug, bend neck back and to the side at nape of neck. vertebrae/scapula |
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Levator Scapula
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stabilize and elevate scapula
cervical vertebrae/scapula |
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Rhomboids
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stabilize, elevate, retract scapula
vertebrae/scapula |
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Pectoralis Major
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flex, adduct, medially rotate humerus
sternum/humerus |
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Latissimus dorsi
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adduct, extend, medially rotate humerus
thoracic vertebrae/humerus |
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Deltoid
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abduct, flex, extend, rotate humerus
clavicle/scapula and humerus |
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Subscapularis
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medially rotate humerus
scapula/humerus Rotator Cuff muscle. |
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Supraspinatus
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abduct humerus
scapula/humerus Rotator Cuff muscle. |
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Infraspinatus
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extend, laterally rotate humerus
scapula/humerus Rotator Cuff muscle. |
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Teres Minor
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adduct, laterally rotate humerus
scapula/humerus Rotator Cuff muscle. |
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Biceps brachii
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flex humerus and elbow
scapula, radius |
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Triceps brachii
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extend humerus and elbow (antagonizes biceps brachii)
scapula, ulna |
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Rectus abdominis
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flex trunk, increase abdominal pressure
pubis/xiphoid process |
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External abdominal oblique
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flex, rotate trunk toward contracted muscle
lower ribs/linea alba, inguinal lig., iliac crest |
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Internal abdominal oblique
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flex and rotate trunk diagonally downward toward iliac crest
iliac crest/lina alba and lower ribs |
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Transversus abdominis
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compress abdomen, increase pressure
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Iliopsoas
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flex trunk and femur
lumbar vertebrae/femur |
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Tensor fascia lata
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flex, abduct, medially rotate femur
ilium/tibia |
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Gluteal muscle group
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extend, abduct femur
ilium/femur |
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Piriformis
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abduct, laterally rotate femur
ilium/femur |
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Adductor group
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adduct femur
pubis/femur |
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Quadriceps group
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flex femur, extend (unbend) knee
pelvis and femur/tibia via patellar tendon |
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Hamstring group
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extend femur, flex (bend) knee
ischium/tibia and fibula |
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Tibialis anterior
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dorsiflex ankle, invert foot
tibia/medial foot arch |
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Gastrocnemius
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plantarflex ankle, flex knee
femur/heel via achilles tendon |
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Aponeurosis
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broad sheets of tendon fibers.
ex. the tendon connecting frontalis and occipitalis; the abdominal rectus sheath |
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Endomysium
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loose connective tissue sleeve around each muscle fiber; supplies fibers w/capillaries and nerves
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Perimysium
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sheath that wraps muscle fibers into fascicles
forms visible "grain" of meat. |
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Epimysium
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fibrous sheath around entire muscle.
inner projections form perimysium. |
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Fascia
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sheet of connective tissue that separates neighboring muscles from each other and subcutaneous tissue
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Function and Example of prime mover?
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produces majority of force during a movement.
ex. flexing elbow = brachialis |
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Function and Example of synergist?
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helps prime mover/agonist perform a movement.
ex. flexing elbow = biceps aids brachialis |
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Function and Example of antagonist?
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opposes movement of a prime mover/agonist.
ex. flexing elbow = triceps brachii opposes brachialis |
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Function and Example of fixator?
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stabilizes/immobilizes a bone during movement of another part of the body.
ex. rhomboids hold scapula against ribcage during arm movements |
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4 Functions of Muscle?
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-movement
-support -protection of viscera (esp abdominal wall) -generate warmth |
