Muscle O.I.A’s And Antag/Syn Practical Exam 200

Question 1

Rhomboid Major OIA

Answer 1

Origin: Spinous processes of T-2 to T-5

Insertion: Medial border of the scapula between the spine of the scapula and inferior angle

Action: Elevate The Scapula

Question 2

Anterior Scalene OIA

Answer 2

Origin: Transverse processes of third through sixth cervical vertebrae (anterior tubercles)

Insertion: Frist Rib

Action: Rotate head and neck to the opposite side

Question 3

Middle Scalene OIA

Answer 3

Origin: Transverse processes of second through seventh cervical vertebrae (posterior tubercles)

Insertion: First Rib

Action: Rotate head and neck to the opposite side

Question 4

Posterior Scalene OIA

Answer 4

Origin: Transverse processes of sixth and seventh cervical vertebrae (posterior tubercles)

Insertion: Second Rib

Action: Rotate head and neck to the opposite side

Question 5

Quadratus Lumborum (QL) OIA

Answer 5

Origin: Posterior iliac crest

Insertion: Last rib and transverse processes of first through fourth lumbar vertebrae

Action: Laterally tilt (elevate) the pelvis

Question 6

Levator Scapula OIA

Answer 6

Origin: Transverse processes of first through fourth cervical vertebrae

Insertion: Medial border of scapula, between superior angle and superior portion of spine of scapula

Action: Elevate the scapula (scapulothoracic joint)

Question 7

Subscapularis OIA

Answer 7

Origin: Subscapular fossa of the scapula

Insertion: Lesser tubercle of the humerus

Action: Medially rotate the shoulder (glenohumeral joint)

Question 8

Latissimus Dorsi OIA

Answer 8

Origin: Inferior angle of scapula, spinous processes of last six thoracic vertebrae, last three or four ribs, thoracolumbar fascia, and posterior iliac crest

Insertion: Intertubercular groove of the humerus

Action: Extend the shoulder (G/H joint)

Question 9

Vastus Medialis OIA

Answer 9

Origin: Medial lip of linea aspera

Insertion: Tibial tuberosity (via the patella and patellar ligament)

Action: Extend the knee (tibiofemoral joint)

Question 10

Tensor Fasciae Latae (TFL) OIA

Answer 10

Origin: Iliac crest, posterior to the ASIS

Insertion: Iliotibial tract

Action: Flex the hip (coxal joint)

Question 11

Pectoralis Major OIA

Answer 11

Origin: Medial half of clavicle, sternum, and cartilage of first through sixth ribs

Insertion: Crest of greater tubercle of humerus

Action: (Upper Fibers) Flex the shoulder (glenohumeral joint)

Question 12

Anterior Scalene Antagonist and Synergist

Answer 12

Antagonist: Levator Scapula

Synergist: SCM

Question 13

Middle Scalene Antagonist and Synergist

Answer 13

Antagonist: Levator Scapula

Synergist: SCM

Question 14

Posterior Scalene Antagonist and Synergist

Answer 14

Antagonist: Levator Scapula

Synergist: SCM

Question 15

Pectoralis Major Antagonist and Synergist
think about the action

Answer 15

Antagonist: Deltoid (Posterior Fibers)

Synergist: Deltoid (Anterior Fibers)

Question 16

Rhomboid Major Antagonist and Synergist

Answer 16

Antagonist: Pectoralis Minor

Synergist: Levator Scapula

Question 17

Levator Scapula Antagonist and Synergist

Answer 17

Antagonist: Pectoralis Major

Synergist: Rhomboid Major

Question 18

Subscapularis Antagonist and Synergist

Answer 18

Antagonist: Deltoid (Posterior Fibers)

Synergist: Pectoralis Major

Question 19

Latissimus Dorsi Antagonist and Synergist
think about the movement

Answer 19

Antagonist: Deltoid (Anterior Fibers)

Synergist: Deltoid (Posterior Fibers)

Question 20

Quadratus Lumborum (QL) Antagonist and Synergist

Answer 20

Antagonist: Psoas Major

Synergist: Latissimus Dorsi (Assists)

Question 21

Tensor Fasciae Latae (TFL) Antagonist and Synergist

Answer 21

Antagonist: Gluteus Maximus (all fibers)

Synergist: Psoas Major

Question 22

Vastus Medialis Antagonist and Synergist

Answer 22

Antagonist: Biceps Femoris

Synergist: Rectus Femoris