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51 Cards in this Set
- Front
- Back
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Functions of muscle |
Produce movement Maintain posture Stabilize joints Generate heat |
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Sarcolemma |
Specialized plasma membrane |
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Myofibrils |
Long organelles inside muscle cell |
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Sarcoplasmic reticulum |
Specialized smooth endoplasmic reticulum |
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Frontalis |
Raises eyebrows |
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Orbicularis oculi |
Blinks and closes eyes |
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Obicularis oris |
Closes and protrudes lips |
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Temporalis |
Closes jaw |
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Zygomaticus |
Raises corner of mouth |
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Masseter |
Closes jaw |
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Buccinator |
Compresses cheek as in whistling and sucking. Hold food between teeth |
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Sternocleidmastoid |
Flexes neck. Rotated head |
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Platysma |
Pulls corners of mouth inferiorly |
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Pectoralis major |
Adducts and flexes humerus |
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Rectus abdominis |
Flexes vertebral column |
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External oblique |
Flexes and rotates vertebral column |
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Biceps brachii |
Flexes elbow and supinates forearm |
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External oblique |
Flexes and rotates vertebral column |
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Brachialis |
Flexes elbow |
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Deltoid |
Abducts arm |
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Iliopsoas |
Flexes hip |
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Adductor muscle |
Adduct thigh |
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Sartorius |
Flexes thigh on hip |
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Quadriceps group |
All extend knee. Rectus femoris also flexes hip and thigh |
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Tibialis anterior |
Dorsiflexes and inverts foot |
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Extensor digitorum Longus |
Extends toes and doesiflexes foot |
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Fibularis muscles |
Plantar flex and evert foot |
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Trapezius |
Extends neck and adducts scapula |
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Latissimus Dorsi |
Extends and adducts humerus |
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Erector spinae |
Extends back |
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Quadratus lumborum |
Flexes spine laterally. Extends spine |
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Deltoid |
Abducts humerus |
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Flexor |
Extends elbow |
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Flexor carpi radialis |
Flexes wrist and abducts hand |
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Flexor carpi ulnaris |
Flexes wrist and adducts hand |
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Deltoid |
Abducts humerus |
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Triceps brachii |
Extends elbow |
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Flexor carpi radialis |
Flexes wrist and abducts hand |
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Flexor carpi ulanris |
Flexes wrist and adducts hand |
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Flexor digitorum superficials |
Extends wrist and abducts hand |
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Extensor digitorum |
Extends fingers and wrist |
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Gluteus Maximus |
Extends hip |
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Gluteus medius |
Abducts thigh. Steadies pelvis during walking |
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Hamstring |
Flex knee and extend hip |
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Gastrocnemius |
Plantar flexes foot and flexes knee |
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Soleus |
Plantar flexes foot |
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Injection sites |
Deltoid Gluteus medius Vastus lateralis Rectus femoris |
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Twitch |
Single brief contraction. Not a normal muscle function |
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Tetanus |
One contraction immediately followed by another Does not return to a resting state |
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Unfused (incomplete tetanus) |
Some relaxation occurs between contractions The results are summed |
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Fused tetanus |
No evidence of relaxation before following contractions |
