Questions: Refer to the models listed below to find the numbered muscle. List its name, explain the Meaning of its ENTIRE name and provide an action. 1. Latissimus dorsi Meaning: Action: Flexor carpi ulnaris Meaning: Action: Rectus femoris Meaning: Action:

To address the question, I will provide the name, meaning, and action for each of the listed muscles.

1. Latissimus dorsi

   • Meaning: The name "Latissimus dorsi" is derived from Latin. "Latissimus" means "broadest," and "dorsi" refers to "of the back." Therefore, the entire name means "broadest muscle of the back."
   • Action: The latissimus dorsi is responsible for the extension, adduction, and medial rotation of the shoulder joint. It also plays a role in movements such as pulling and lifting.

2. Flexor carpi ulnaris

   • Meaning: The name "Flexor carpi ulnaris" is also derived from Latin. "Flexor" indicates that the muscle is involved in flexing, "carpi" refers to the wrist, and "ulnaris" indicates its location along the ulna, one of the forearm bones. Thus, the entire name means "the muscle that flexes the wrist on the ulnar side."
   • Action: The flexor carpi ulnaris is responsible for flexing and adducting the wrist.

3. Rectus femoris

   • Meaning: The name "Rectus femoris" comes from Latin. "Rectus" means "straight," and "femoris" refers to the femur or thigh. Therefore, the entire name means "straight muscle of the thigh."
   • Action: The rectus femoris is one of the quadriceps muscles and is responsible for extending the knee and flexing the hip.

In summary, each muscle name provides insight into its location and function, and the actions listed are key movements associated with each muscle.