Throwing a baseball overhead
Muscle - Deltoid
Action - Abducts, flexes, and extends the arm at the shoulder joint
Innervation - Axillary nerve
Muscle - Triceps Brachii
Action - Extends the forearm at the elbow joint and assists in shoulder joint extension
Innervation - Radial nerve
Kicking a ball
Muscle - Gluteus Maximus
Action - Extends, externally rotates, and abducts the hip
Innervation - Inferior gluteal nerve
Muscle - Biceps Femoris
Action - Bends the leg at the knee joint and extends the thigh at the hip joint
Innervation - Tibial nerve and common fibular nerve
Doing sit-ups
Muscle - Rectus Abdominis
Action - Flexes the vertebral column
Innervation - Thoraco-abdominal nerves
Muscle - External Obliques
Action - Trunk flexion, trunk lateral flexion, and trunk rotation
Innervation - Thoraco-abdominal nerves and subcostal nerve
Breathing
Muscle - Diaphragm
Action - Contracts to expand the thoracic cavity
Innervation - Phrenic nerve
Muscle - External Intercostals
Action - Elevate the ribs, expanding the thoracic cavity and assisting in inhalation
Innervation - Intercostal nerves