Activity 2
- Throwing a baseball overhead
- Deltoid Muscles
- Action: Acromial extremity of clavicle (anterior fibers), acromion of scapula (lateral fibers), and spine of scapula (posterior fibers)
- Innervation: Axillary nerve.
- Pectoralis Major
- Action: Clavicle (clavicular head), sternum, and costal cartilages of ribs 2–6 and sometimes ribs 1–7 (sternocostal head).
- Innervation: Medial and lateral pectoral nerves
- Deltoid Muscles
- Kicking a ball
- Rectus femoris
- Action: Anterior inferior iliac spine.
- Innervation: Femoral nerve.
- Biceps femoris
- Action: Long head arises from ischial tuberosity; short head arises from linea aspera of femur.
- Innervation: Tibial and fibular nerves from sciatic nerve.
- Rectus femoris
- Doing sit-ups
- Rectus Abdominis
- Action: Pubic crest and pubic symphysis.
- Innervation: Thoracic spinal nerves T7–T12.
- Transverse Abdominis
- Action: Iliac crest, inguinal ligament, lumbar fascia, and cartilages of ribs 5–10.
- Innervation: Thoracic spinal nerves T8–T12, iliohypogastric nerve, and ilioinguinal nerve.
- Rectus Abdominis
- Breathing
- Diaphragm
- Action: Xiphoid process of sternum, costal cartilages and adjacent portions of ribs 7–12, lumbar vertebrae and their intervertebral discs.
- Innervation: Phrenic nerve, which contains axons from cervical spinal nerves (C3–C5).
- External intercostals muscles
- Action: Inferior border of rib above.
- Innervation: Thoracic spinal nerves T2–T12.
- Diaphragm
Reference:
Tortora, G. J., & Derrickson, B. H. (2017). Tortora’s Principles of Anatomy & Physiology. Wiley. https://books.google.com.ph/books?id=aSaVDwAAQBAJ&lpg=PR1&pg=PR1#v=onepage&q&f=false