ACTIVITY 2

ACTIVITY 2

ACTIVITY 2

by Corel Lee -
Number of replies: 0

  1. Throwing a baseball

    1. Subscapularis 

      1. Action: Medial rotation of humerus at shoulder joint

      2. Innervation: Upper and lower subscapular nerve

    2. Latissimus dorsi 

      1. Action: Adducts, extends and medially rotates arm at shoulder joint

      2. Innervation: Thoracodorsal nerve

  2. Kicking a ball

    1. Biceps femoris

      1. Action: Extends thigh at hip joint, and flexes leg at knee joint

      2. Innervation: Tibial and fibular nerves from sciatic nerve

    2. Gracilis

      1. Action: Flexes leg at knee joint, medially rotates thigh, and adducts thigh at hip joint

      2. Innervation: Obturator nerve

  3. Sit-ups

    1. Rectus abdominis 

      1. Action: Compresses abdomen, and flexes vertebral column

      2. Innervation: Thoracic spinal nerves T7-T12

    2. Transversus abdominis

      1. Action: Compresses abdomen

      2. Innervation: Thoracic spinal nerves T8–T12, ilioinguinal nerve, and iliohypogastric nerve

  4. Breathing

    1. Diaphragm

      1. Action: Contracts to increase volume of thoracic cavity to inhale, and relaxes to decrease volume of thoracic cavity to exhale

      2. Innervation: Phrenic nerve

    2. Internal intercostal

      1. Action: Contracts to draw ribs together to exhale

      2. Innervation: Thoracic spinal nerves T2-T12