Major Muscle Groups

Question 1

What are the actions and location of the Trapezius?

Answer 1

Crosses the shoulder joint. Elevates the shoulders and extends the neck. Upper fibres extend the neck and elevate the scapula/shoulder girdle. Middle fibres retract the scapula/shoulder girdle. Lower fibres depresses the scapula/shoulder girdle

Question 2

What are the actions and location of the Pectoralis Major?

Answer 2

Crosses the shoulder joint. Adduction and inward/medial/internal rotation of the arm

Question 3

What are the actions and location of the Rhomboids?

Answer 3

Crosses the shoulder gridle. Retracts the shoulder girdle and rotates the scapula (medially/internally)

Question 4

What are the actions and location of the Latissimus Dorsi?

Answer 4

Crosses the shoulder joint. Adducts, extends and inwardly/medially/internally rotates the shoulder

Question 5

What are the actions and location of the Erector Spinae?

Answer 5

Crosses the vertebrae joint. Extends the spine. Rotates the thoracic spine

Question 6

What are the actions and location of the Deltoids?

Answer 6

Crosses the shoulder joint. Abducts the arm. Assists in shoulder rotation (medial and lateral) and horizontal flexion and extension

Question 7

What are the actions and location of the Tricpes?

Answer 7

Crosses the elbow and shoulder joints. Extends the elbow

Question 8

What are the actions and location of the Brachialis?

Answer 8

Crosses the elbow joint. Flexes the elbow

Question 9

What are the actions and location of the Biceps?

Answer 9

Crosses the elbow and shoulder joint. Flexes the elbow. Assists with shoulder flexion. Supinates the forearm

Question 10

What are the actions and location of the External Obliques?

Answer 10

Crosses the vertebrae joint. Laterally flexes the thoracic spine. Rotates the thoracic vertebrae

Question 11

What are the actions and location of the Transverse Abdominals?

Answer 11

Crosses the lumbar vertebrae. Compresses the abdomen.

Question 12

What are the actions and location of the Rectus Abdominals?

Answer 12

Crosses the Thoracic and lumbar vertebrae. Flexes the thoracic and lumbar spine

Question 13

What are the actions and location of the Internal Obliques?

Answer 13

Crosses the vertebrae joint. Laterally flexes the thoracic spine. Rotates the thoracic vertebrae

Question 14

What are the actions and location of the Iliopsoas?

Answer 14

Crosses the hip joint. Flexes the hip

Question 15

What are the actions and location of the Adductors?

Answer 15

Crosses the hip joint. Adducts and outwardly/laterally/externally rotates the hip

Question 16

What are the actions and location of the Abductors?

Answer 16

Crosses the hip joint. Abducts the leg away from the midline of the body and inwardly/medially/internally rotates the hip

Question 17

What are the actions and location of the Gluteus Maximus?

Answer 17

Crosses the hip joint. Extends and outwardly/laterally/externally rotates the hip/leg

Question 18

What are the actions and location of the Quadriceps?

Answer 18

Crosses the knee and hip joint. Extends the knee.

Question 19

What are the actions and location of the Hamstrings?

Answer 19

Crosses the hip and knee joint. Extends the hip. Flexes the knee

Question 20

What are the actions and location of the Gastrocnemius?

Answer 20

Crosses the ankle and knee joint. Plantarflexes the ankle

Question 21

What are the actions and location of the Soleus?

Answer 21

Crosses the ankle joint. Plantarflexes the foot

Question 22

What are the actions and location of the Tibalis Anterior?

Answer 22

Crosses the ankle joint. Dorsiflexes the ankle