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Module 2
Movement
| Term | Definition |
|---|---|
| Axial Muscles | are any of the skeletal muscles of the trunk or head. |
| Appendicular Muscles | are any of the muscles of the upper or lower limbs. They control the movement of limbs and also stabilize and control the movements of pectoral and pelvic girdles. |
| Biceps Brachii | is a two-headed muscle (bi- means “two”). It lies on the upper arm between the shoulder and the elbow. Actions: Flex the elbow, supinate (rotate) the forearm |
| Deltoid Muscle | forms the rounded shape of the shoulder. Actions: Abduction, flexion, and extension of shoulder |
| Triceps Brachii | is the large muscle on the back of the arm. Actions: Extends forearm, straightens elbow |
| Gluteus Maximus | is a narrow and thick muscle that makes up a large portion of the shape and appearance of the buttocks. Actions: External rotation and extension of the hip joint |
| Hamstrings | are a large muscle group that occupies the back of the thigh. It is made up of three muscles: semimembranosus, semitendinosus, biceps femoris Actions: Flexes knee joint, rotates the knee joint laterally, and extends the thigh |
| Quadriceps Femoris | is a large muscle group that occupies the front and sides of the thigh. As the prefix quad- indicates, it is made up of four muscles: rectus femoris, vastus lateralis, vastus medialis, vastus intermedius Actions: Knee extension and hip flexion |
| Gastrocnemius | on the back of the leg forms part of the calf. It is a powerful muscle that, along with the soleus muscle, forms the calf. Actions: Plantar flexion of the foot (flexing the foot toe-down, greater than 90 degrees), flexes knee |
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