- Throwing a baseball overhead
- Deltoid
- Action: abduct, extend, and medially rotate arm at shoulder joint
- Innervation: axillary nerve
- Pectoralis major
- Action: adducts and medially rotates arm at shoulder joint
- Innervation: medial and lateral pectoral nerves
- Quadriceps femoris
- Action: extend the leg at knee joint
- Innervation: femoral nerve
- Biceps femoris
- Action: flexes leg at knee joint and extends thigh at hip joint
- Innervation: tibial and fibular nerves from sciatic nerve
- Rectus abdominis
- Action: flexes vertebral column, especially lumbar portion
- Innervation: thoracic spinal nerves T7–T12
- External Oblique
- Action: compress abdomen and flex vertebral column
- Innervation: thoracic spinal nerves T7–T12 and the iliohypogastric nerve
- Diaphragm
- Action: flattens to increase vertical dimension of thoracic cavity in inhalation, relaxes to decrease vertical dimension of thoracic cavity in exhalation
- Innervation: phrenic nerve, which contains axons from cervical spinal nerves (C3–C5)
- External intercostals
- Action: contracts to elevate ribs and increase anteroposterior and lateral dimensions of thoracic cavity in inhalation; relaxes to depresses ribs and decrease anteroposterior and lateral dimensions of thoracic cavity in exhalation
- Innervation: thoracic spinal nerves T2-T12