Exam 1 Muscle Actions

Question 1

Cervical flexion

Answer 1

SCM

Question 2

Cervical extension

Answer 2

Splenius capitis + cervicis, Semispinalis, Rectus capitis posterior major + minor, Obliquus capitis superior, *UT, SCM

Question 3

Cervical lateral flexion (SB)

Answer 3

Splenius capitis + cervicis, Obliquus capitis superior, *UT, SCM

Question 4

Cervical ipsilateral rotation

Answer 4

Splenius capitis + cervicis, Rectus capitis posterior major + minor, Obliquus capitis inferior

Question 5

Cervical contralateral rotation

Answer 5

Semispinalis capitis, SCM, *UT

Question 6

Shoulder flexion

Answer 6

Anterior deltoid

Question 7

Shoulder extension

Answer 7

Latissimus dorsi, posterior deltoid, teres major

Question 8

Shoulder abduction

Answer 8

Middle deltoid, *supraspinatus

Question 9

Shoulder Adduction

Answer 9

Latissimus Dorsi, Pectoralis major, teres minor

Question 10

Shoulder External rotation

Answer 10

Posterior deltoid, Infraspinatus, *teres minor

Question 11

Shoulder internal rotation

Answer 11

Latissimus Dorsi, anterior deltoid, Pectoralis major, teres major, subscapularis

Question 12

Shoulder horizontal Adduction

Answer 12

Pectoralis major

Question 13

Stabilize head of humerus in glenoid cavity

Answer 13

Supraspinatus, Infraspinatus, teres minor, subscapularis (SITS)

Question 14

Scapula protraction/abduction

Answer 14

Serratus anterior

Question 15

Scapular Retraction/adduction

Answer 15

Middle trapezius,rhomboid major and minor

Question 16

Scapular elevation

Answer 16

Upper trapezius, levator scapulae

Question 17

Scapular depression

Answer 17

Lower trapezius

Question 18

Scapular upward rotation

Answer 18

Upper trapezius, lower trapezius, serratus anterior

Question 19

Scapular downward rotation

Answer 19

Levator scapulae, rhomboid major+ minor

Question 20

Scapular stabilization

Answer 20

Middle trapezius, rhomboid major + minor, pectoralis minor, serratus anterior

Question 21

Vertebral column flexion

Answer 21

psoas major (inferiorly w/ iliacus while sitting), rectus abdomens, external oblique, internal oblique

Question 22

vertebral column extension

Answer 22

erector spinae group, rotatores, multifidus, semispinalis (thoracic spine), quadratus lumborum

Question 23

vertebral column lateral flexions (SB)

Answer 23

erector spinae group, quadratus lumborum, psoas major (superior), external oblique, internal oblique

Question 24

vertebral column ipsilateral rotation

Answer 24

internal oblique

Question 25

vertebral column stabilization

Answer 25

multifidus, psoas major (balance)

Question 26

Compress abdominal viscera

Answer 26

rectus abdominis, external oblique, internal oblique, transverse abdominis

Question 27

rib elevation

Answer 27

external intercostals. *serratus posterior superior

Question 28

Rib depression

Answer 28

internal intercostals, *serratus posterior inferior

Question 29

pelvis/hip lateral tilt/hike

Answer 29

quadratus lumborum

Question 30

pelvis/hip posterior tilt

Answer 30

rectus abdominis

Question 31

pelvis/hip flexion

Answer 31

psoas major (inferiorly w/iliacus), iliacus