ACTIVITY 2

FLORES, Jeric Thomas U.

FLORES, Jeric Thomas U.

by Jeric Thomas Flores -
Number of replies: 0

 

  1. Throwing a ball overhead

 

    1. Pectoralis Major

      1. Action: As a whole, adducts and medially rotates arm at shoulder joint; clavicular head flexes arm, and sternocostal head extends flexed arm to side of trunk.

      2. Innervation: Medial and lateral pectoral nerves

    2. Latissimus dorsi

      1. Action: Extends, adducts, and medially rotates arm at shoulder joint; draws arm inferiorly and posteriorly.

      2. Innervation: Thoracodorsal nerve.

  2. Kicking a ball

    1. Rectus femoris

      1. Action: extend leg at knee joint; alone also flexes thigh at hip joint.

      2. Innervation: Femoral nerve

    2. Sartorius

      1. Action: Weakly flexes leg at knee joint; weakly flexes, abducts, and laterally rotates thigh at hip joint.

      2. Innervation: Femoral nerve

  3. Doing sit-ups

    1. Rectus abdominis

      1. Action: Flexes vertebral column, especially lumbar portion, and compresses abdomen

      2. Innervation: Thoracic spinal nerves T7–T12.

    2. Transversus abdominis

      1. Action: Compresses abdomen

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

  4. Breathing

    1. Diaphragm

      1. Action: to flatten and increases vertical dimension of thoracic cavity, resulting in inhalation

      2. Innervation: Phrenic nerve, which contains axons from cervical spinal nerves (C3–C5)

    2. External intercostals

      1. Action: elevates ribs and increases anteroposterior and lateral dimensions of thoracic cavity

      2. Innervation: Thoracic spinal nerves (T2-T12)

 

Tortora, G. J., & Derrickson, B. (2017). Principles of anatomy and physiology (15th ed.). Wiley Custom Learning Solutions. https://handoutset.com/wp-content/uploads/2022/05/Principles-of-anatomy-and-physiology-Wiley-2017-Derrickson-Bryan-H._-Tortora-Gerard-J..pdf