Throwing a baseball overhead
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DELTOID
Innervation: Axillary Nerve (C5, C6)
Action: Flexes and medially rotates the arm at the shoulder joint, helping the initial forward movement of the arm.
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LATISSIMUS DORSI
Innervation: Thoracodorsal Nerve (C6, C7, C8)
Action: Adduction, Extends, and medially rotates the arm, bringing the arm downward and backward.
Kicking a ball
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GLUTEUS MAXIMUS
Innervation: Inferior Gluteal Nerve (L5,S1, S2)
Action: Laterally rotates the thigh and at the hip and Extends.
2. QUADRICEPS FEMORIS
Innervation: Femoral Nerve (L2,L3,L4)
Action: Extends the leg at the knee joint. Flexes the thigh at the hip joint.
Doing sit-ups
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RECTUS ABDOMINIS
Innervation: Thoracoabdominal Nerves (T7-T11)
Action: Pulling of the rib cage onto the pelvis during a sit-up. Also flexes the vertebral column.
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EXTERNAL OBLIQUE
Innervation: Thoracoabdominal Nerves (T7-T11) and Subcostal Nerve (T12)
Action: Also flexes the vertebral column. Assist in compressing the abdominal cavity
Breathing
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DIAPHRAGM
Innervation: Phrenic Nerve (C3,C4,C5)
Action: Contracts to flatten and increase the volume of thoracic cavity. Entry of air to lungs during inhalation.
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EXTERNAL INTERCOSTALS
Innervation: Intercostal nerves (T1-T11)
Action: Elevates the ribs, increasing the anteroposterior and lateral dimensions of the thoracic cavity during inhalation.