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Unformatted text preview: Summary of Muscle Groups On Day 1 of the cat dissection, the orange team (?) located the muscles of the neck, chest and abdomen. The sternomastoid located in the neck works to flex the head and rotate the head from side to side. In the chest, the pectoralis major rotates the arm at the shoulder joint, the pectoralis minor abducts the scapula and rotates is downward, and the serratus ventralis rotates the scapula upward. The external intercostals lift the ribs for inhalation during breathing. The three muscles that make up the abdominal wall are the rectus abdominus which compresses the abdomen and flexes the vertebral column, the external and internal obliques which work together to compress the abdomen and help rotate the vertebral column, and the transverse abdominus that only compresses the abdomen. The linea alba also acts on the...
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- Spring '08
- muscles, cat dissection, deltoid muscles, orange team