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Throwing a ball overhead
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Deltoid
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Action: Arm abduction, which means raising your arm out to the side of your body
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Innervation: Axillary nerve
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Subscapularis
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Action: Internally rotates and adducts the humerus
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Innervation: Upper and lower subscapular nerve
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Kicking a ball
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Rectus femoris
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Action: Helps with thigh flexion
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Innervation: Femoral nerve
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Gluteus maximus
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Action: Extension, external rotation, abduction, and adduction of the thigh
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Innervation: Inferior gluteal nerve (L5-S2)
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Doing sit-ups
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Rectus abdominis
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Action: Flexion of the trunk (flexion of thoracic and lumbar spine)
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Innervation: Thoracoabdominal nerves
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Transversus abdominis
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Action: Maintain abdominal tension and support abdominal viscera
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Innervation: Terminal branches of intercostal nerves T7-T11, subcostal nerve (T12), iliohypogastric nerve (L1), and ilioinguinal nerves (L1)
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Breathing
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Diaphragm
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Action: Contraction of the muscle facilitates expansion of the thoracic cavity
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Innervation: Phrenic nerve
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External intercostals
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Action: Elevate ribs during forced inspiration
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Innervation: Thoracic spinal nerves (T2-T12)
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Reference
Tortora, G. J., & Derrickson, B. (2017). Principles of anatomy and physiology (15th ed.). Wiley Custom Learning Solutions. https://handoutset.com/wp-content/uploads/2022/05/Principles-of-anatomy-and-physiology-Wiley-2017-Derrickson-Bryan-H._-Tortora-Gerard-J..pdf