ACTIVITY 2

ACTIVITY 2

ACTIVITY 2

by Lara Nicole Herezo -
Number of replies: 0
  1. Throwing a baseball overhead
    1. Pectoralis Major
      1. Action: Moves humerus of shoulder joint and produces the medial rotation of the overhead throw
      2. Innervation: Lateral pectoral nerve & medial pectoral nerve
    2. Latissimus dorsi
      1. Action: Extends humerus to produce whip-like movement
      2. Innervation: Thoracodorsal nerve
  2.  Kicking a ball
    1. Quadriceps
      1. Action: Contracts concentrically to straighten the knee
      2. Innervation: Femoral nerve
    2. Hamstrings
      1. Action: Contracts eccentrically to decelerate the movement of the lower leg
      2. Innervation: Sciatic nerve
  3.  Doing sit-ups
    1. Rectus abdominis
      1. Action: Flexion of the trunk anteriorly 
      2. Innervation: Thoracoabdominal nerves
    2. Internal and external obliques
      1. Action: Rotate and bend the trunk; spinal stability
      2. Innervation: T7 to T12 thoracoabdominal nerves
  4. Breathing
    1. Diaphragm
      1. Action: Rhythmically contracts and flattens as the chest cavity enlarges, relaxes as air is forced out of the lungs 
      2. Innervation: Phrenic nerve
    2. Intercostal muscles
      1. Action: Elevates during inspiration and depresses during exhalation
      2. Innervation: Intercostal nerves