Label the Muscles of the Chest

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Muscles of the Chest:

1. Pectoralis Major:

   • Location: Covers the upper part of the chest.
   • Function: Responsible for the movement of the shoulder joint, particularly the adduction (bringing the arm toward the midline of the body) and medial rotation of the arm.
     
     
2. Pectoralis Minor:
   • Location: Located beneath the pectoralis major.
   • Function: Stabilizes the scapula (shoulder blade) and assists in the movement of the shoulder.
     
     
3. Serratus Anterior:
   • Location: Lies on the side of the chest.
   • Function: Stabilizes the scapula and assists in the rotation of the scapula.

Muscles of the Abdomen:

1. Rectus Abdominis:

   • Location: Runs vertically along the front of the abdomen.
   • Function: Responsible for flexing the lumbar spine (bringing the chest towards the pelvis), and it plays a role in stabilizing the pelvis during movements.
     
     
2. External Oblique:
   • Location: Forms the outer layer of the lateral abdominal wall.
   • Function: Allows for trunk rotation and lateral flexion, also contributes to abdominal compression.
     
     
3. Internal Oblique:
   • Location: Lies beneath the external oblique, running at right angles to it.
   • Function: Assists in trunk rotation and lateral flexion, and it also contributes to abdominal compression.
     
     
4. Transversus Abdominis:
   • Location: The deepest layer of the abdominal muscles.
   • Function: Acts as a stabilizing muscle, providing support to the internal organs and helping to compress the abdominal contents.