Lessons 16 - 19

Question 1

the rotator cuff muscles mnemonic

Answer 1

SITS:
supraspinatus, infraspinatus, teres minor, subscapularis

Question 2

brachial plexus

Answer 2

nerves that innervate the upper limb

Question 3

spinal nerves that innervate the upper limb

Answer 3

C4 - T1

Question 4

the spinal nerves that innervate the upper limb form three cords:

Answer 4

lateral, median, posterior cords

Question 5

the lateral cord diverges into what nerves

Answer 5

musculocutaneous and median nerve

Question 6

the median cord diverges into what nerves

Answer 6

medial and ulnar nerves

Question 7

posterior cord diverges into what nerves

Answer 7

radial and axillary nerve

Question 8

musculocutaneous nerve supplies

Answer 8

the anterior flexors of the shoulder

Question 9

medial nerve supplies

Answer 9

the surface of the forearm and thumb muscles

Question 10

ulnar nerve supplies

Answer 10

the anterior forearm and pinky muscles

Question 11

radial nerve supplies

Answer 11

the posterior forearm

Question 12

axillary nerve supplies

Answer 12

the posterior shoulder

Question 13

motor unit

Answer 13

motor neuron and the muscle fibers it innervates

Question 14

motor units are activated by

Answer 14

action potentials

Question 15

coactivation

Answer 15

contraction of one muscle leads to more minor activity in the antagonist muscle

Question 16

coactivation helps stabilize

Answer 16

joints

Question 17

electromyography

Answer 17

measure the electrical activity of muscles and nerves controlling muscles

Question 18

intramuscular emg

Answer 18

needle electrodes inserted through the skin into the muscle

Question 19

surface emg

Answer 19

electrodes placed on the skin

Question 20

the size and shape of waveform in emg inform

Answer 20

ability of the muscle to respond to stimulated nerves

Question 21

emg is used to differentiate

Answer 21

muscles weaknesses and neurological disorders

Question 22

emg’s reflect the electrical activity of all or one muscle fibers

Answer 22

all muscle fibers activated at the time

Question 23

central nervous disorder examples

Answer 23

strokes, brain tumors, Parkinson’s disease, multiple sclerosis

Question 24

peripheral nervous disorder examples

Answer 24

motor neuron disease, peripheral neuropathy

Question 25

peripheral neuropathy

Answer 25

combination of motor sensory, and autonomic disfunction

Question 26

myopathy

Answer 26

disease of muscles

Question 27

axillary neuron innervates the

Answer 27

teres minor and deltoid muscles

Question 28

musculocutaneous neuron innervate the

Answer 28

coracobrachialis, biceps brachii, brachialis

Question 29

radial neuron innervates the

Answer 29

triceps brachii, brachioradialis, extensor carpi radialis longus and brevis, supinator, extensor digitorum, extensor carpi ulnaris, abductor policis longus, extensor policis brevis

Question 30

median nerve innervates the

Answer 30

pronator teres and quadratus, flexor carpi radialis, palmaris longus, flexor digitorum superficialis and profundus, flexor pollicis longus, abductor pollicis brevis

Question 31

ulnar nerve innervates the

Answer 31

flexor carpi ulnaris and flexor digitorum profundus