- Throwing a baseball overhead
- Pectoralis major
- Innervation: Lateral and medial pectoral nerves (C5-T1)
- Action: adducts and medially rotates arm at shoulder joint; clavicular head flexes arm, and sternocostal head extends flexed arm to side of trunk.
- Latissimus dorsi
- Innervation: Thoracodorsal nerve (C6, 7, 8)
- Action: Extends, adducts, and medially rotates arm at shoulder joint; draws arm inferiorly and posteriorly. RMA: Elevates vertebral column and torso.
- Kicking a ball
- Quadriceps femoris
- Innervation: Femoral nerve (L2-L4)
- Action: extension of the knee joint
- Biceps Femoris
- Innervation: Femoral nerve
- Action: Extends, adducts, and medially rotates arm at shoulder joint; draws arm inferiorly and posteriorly.
- Doing sit-ups
- Transversus abdominis
- Innervation: Thoracoabdominal nerves (T7-T11), subcostal nerve (T12) and branches of the lumbar plexus
- Action: Compresses abdomen.
- Rectus abdominis
- Innervation: Thoracoabdominal nerves (T7-T11)
- Action: Flexes vertebral column, especially lumbar portion, and compresses abdomen to aid in defecation, urination, forced exhalation, and childbirth.
- Breathing
- Diaphragm
- Innervation: Phrenic nerve
- Action: Flexes vertebral column, especially lumbar portion, and compresses abdomen to aid in defecation, urination, forced exhalation, and childbirth.
- Internal intercostal muscles
- Innervation: Intercostal nerve
- Action: draws adjacent ribs together to further decrease anteroposterior and lateral dimensions of thoracic cavity during forced exhalation.
REFERENCE(S):
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