1. TURNING A DOORKNOB
- SUPINATOR MUSCLE
- ACTION: Turns forearms to position the palm upwards
- INNERVATION: Deep branch of the radial nerve
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PRONATOR TERES
- ACTION: Flexes elbows, pronates forearm
- INNERVATION: Median Nerve
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PRONATOR QUADRATUS MUSCLE
- ACTION: Pronation of the radioulnar joint
- INNERVATION: Median Nerve (Anterior interosseous nerve)
2. THROWING A BASEBALL OVERHEAD
-
TERES MAJOR
- ACTION: Extension and internal rotation of the arm
- INNERVATION: Lower subscapular nerve
-
SUBSCAPULARIS
- ACTION: Internal rotation of the arm
- INNERVATION: Upper and lower subscapular nerves
-
PECTORALIS MAJOR
- ACTION: Flexes the arm at the shoulder joint, medially rotates the arm, adducts the arm
- INNERVATION: Medial and lateral pectoral nerves
3. KICKING A BALL
-
QUADRICEPS FEMORIS
ACTION: Leg extension
INNERVATION: Femoral nerve
-
HAMSTRINGS
ACTION: Hip extension and knee flexion
INNERVATION: Sciatic nerve
-
GLUTEUS MEDIUS
ACTION: Thigh abduction, thigh internal rotation
INNERVATION: Superior gluteal nerve
4. DOING SIT-UPS
-
RECTUS ABDOMINIS
- ACTION: Trunk flexion
- INNERVATION: Thoracic abdominal nerves
-
EXTERNAL OBLIQUE
- ACTION: Bilateral contraction - trunk flexion
- INNERVATION: Intercostal nerves
-
RECTUS FEMORIS
- ACTION: Leg extension
- INNERVATION: Femoral nerve
5. WALKING
-
VASTUS LATERALIS
- ACTION: Lower leg extension, allows body to rise up when sitting
- INNERVATION: Femoral Nerve
-
GASTROCNEMIUS
- ACTION: Main plantarflexor of the ankle joint
- INNERVATION: Tibial nerve
-
PERONEUS BREVIS
- ACTION: Plantar Flexes the foot
- INNERVATION: Superficial fibular nerve
6. BREATHING
-
DIAPHRAGM
- ACTION: Assists in raising intra-abdominal pressure
- INNERVATION: Phrenic nerves
-
PECTORAL MUSCLES
- ACTION: Humerus flexion
- INNERVATION: Medial and lateral pectoral nerves
-
INTERCOSTAL MUSCLES
- ACTION: Depress the ribs during forced expiration; support intercostal spaces
- INNERVATION: Intercostal nerves