1. Turning a door knob
- Supinator
>Action: Supinates forearm at radioulnar joints
>Innervation: Deep radial nerve
2. Throwing a baseball overhead
- Subscapularis
> Action: Medially rotates arm at shoulder joint
> Innervation: Upper and lower subscapular nerve
- Triceps brachii
> Action: Extends forearm at elbow joint and extends arm at shoulder joint
> Innervation: Radial nerve
- Pectoralis major
> Action: adducts and medially rotates arm at shoulder joint
> Innervation: Medial and lateral pectoral nerves
3. Kicking a ball
- Gluteus Maximus
> Action: locks knee in extension, extends thigh at hip joint
> Innervation: inferior gluteal nerve
- Adductor longus
> Action: adducts and flexes thigh at hip joint
> Innervation: obturator nerve
- Rectus femoris
> Action: flexion of thigh at the hip joint
> Innervation: lumbar spinal nerves, femoral nerve
4. Doing sit-ups
- Transverse Abdominis
> Action: Compresses abdomen
> Innervation: Thoracic spinal nerves, iliohypogastric nerve, and ilioinguinal nerve.
- Rectus Abdominis
> Action: Flexes vertebral column, especially the lumbar portion, and compresses abdomen to aid in defecation, urination, forced exhalation, and childbirth.
> Innervation: Thoracic spinal nerves
- Rectus Femoris
> Action: Extend leg at knee joint; rectus femoris muscle acting alone also flexes thigh at the hip joint.
> Innervation: Femoral nerve
5. Walking
- Rectus Femoris
> Action: Extend leg at knee joint; rectus femoris muscle acting alone also flexes thigh at the hip joint.
> Innervation: Femoral nerve
- Tibialis Anterior
> Action: Dorsi flexes foot at the ankle joint and inverts (supinates) foot at intertarsal joints
> Innervation: Deep fibular nerve
- Gluteus Medius
> Action: Abducts thigh at the hip joint and medially rotates thigh
> Innervation: Superior gluteal nerve
6. Breathing
- Diaphragm
> Action: Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges. Upon exhalation, the diaphragm relaxes and returns to its shape, and air is forced out of the lungs.
> Innervation: phrenic nerve
- External intercostal
> Action: The external intercostal muscles elevate the ribs during forced inhalation and are functionally classified as the accessory respiratory musculature
> Innervation: anterior rami of spinal nerves
- Parasternals
> Action: active during each inspiratory breath and function to expand the chest wall and the lungs
> Innervation: intercostal nerves