PPT 8

Question 1

scalenes purposeful activity

Answer 1

driving, deep breath with exertion (running or cycling)

Question 2

anterior scalene action

Answer 2

neck lateral flexion
1st rib elevation during forced inhalation

Question 3

anterior scalene SA

Answer 3

TP C3-C6

Question 4

anterior scalene IA

Answer 4

1st rib

Question 5

anterior scalene nerve innervation

Answer 5

cervical spinal nerve C4, C5, C6

Question 6

middle scalene action

Answer 6

neck lateral flexion
1st rib elevation during forced inhalation

Question 7

middle scalene SA

Answer 7

TP C5-C7

Question 8

middle scalene IA

Answer 8

1st rib

Question 9

middle scalene nerve innervation

Answer 9

anterior rami of cervical spinal nerves

Question 10

posterior scalene action

Answer 10

neck lateral flexion
2nd rib elevation during forced inhalation

Question 11

posterior scalene SA

Answer 11

TP C5-C7

Question 12

posterior scalene IA

Answer 12

2nd rib

Question 13

posterior scalene nerve innervation

Answer 13

anterior rami of cervical spinal nerves C7, C8

Question 14

biceps brachii purposeful activity

Answer 14

combining hair, eating apple, washing face

Question 15

biceps brachii action

Answer 15

elbow flexion
forearm supination
SHB resists shoulder dislocation

main contributor to elbow flexion when forearm is supinated

Question 16

biceps brachii PA

Answer 16

SHB: coracoid process
LHB: supraglenoid tubercle

Question 17

biceps brachii DA

Answer 17

radial tuberosity
forearm fascia via bicipital aponeurosis

Question 18

biceps brachii nerve innervation

Answer 18

musculocutaneous nerve C5, C6, C7

Question 19

coracobrachialis action

Answer 19

helps with…
arm flexion
arm adduction

resists shoulder dislocation

Question 20

coracobrachialis PA

Answer 20

coracoid process

Question 21

coracobrachialis DA

Answer 21

middle humerus

Question 22

coracobrachialis nerve innervation

Answer 22

musculocutaneous nerve C5, C6, C7

Question 23

brachialis action

Answer 23

elbow flexion (in all positions - strongest elbow flexor)

main contributor to elbow flexion when forearm is pronated

Question 24

brachialis PA

Answer 24

distal anterior humerus

Question 25

brachialis DA

Answer 25

ulnar tuberosity
coronoid process of ulna

Question 26

brachialis nerve innervation

Answer 26

musculocutaneous nerve C5, C6
small branch from radial nerve C5, C7

Question 27

brachioradialis action

Answer 27

elbow flexion (in mid-pronated/thumb up position)
assists to pronate and supinate forearm when these movements are resisted/from end range

main contributor to elbow flexion when forearm is mid-pronated

Question 28

brachioradialis PA

Answer 28

lateral supra-epicondylar ridge of humerus

Question 29

brachioradialis DA

Answer 29

lateral surface of distal radius proximal to styloid process

Question 30

brachioradialis nerve innervation

Answer 30

radial nerve C5, C6, C7

Question 31

triceps brachii action

Answer 31

elbow extension
LHT resists humerus dislocation
especially important during adduction

Question 32

triceps brachii PA

Answer 32

long head: infraglenoid tubercle of scapula
lateral head: posterior surface of humerus (superior to radial groove)
medial head: posterior surface of humerus (inferior to radial groove)

Question 33

triceps brachii DA

Answer 33

olecranon of ulna

Question 34

triceps brachii nerve innervation

Answer 34

radial nerve C6, C7, C8