Muscles of Chest, Shoulder, & Upper Limbs

Question 1

abductor pollicis brevis

Answer 1

Abduct thumb

Question 2

adductor policis

Answer 2

Adduct thumb

Question 3

biceps brachii

Answer 3

More anterior

Arm flexion

Question 4

brachialis

Answer 4

Flexor for forearm

Lifts the ulna as the bicep lifts the radialis

Question 5

brachioradialis

Answer 5

Help flexes the forearm

Question 6

deltoid

Answer 6

Shoulder muscle

Prime mover of abducting arm

Question 7

extensor carpi radialis

Answer 7

Helps extend the hand along with the extensor carp ulnaris

Helps abduct the hand

Question 8

extensor carpi ulnaris

Answer 8

Extends the hand along with the extensor carpi radialis

Adduct the hand

Question 9

extensor digitorum

Answer 9

Extends the digits

Question 10

extensor pollicis brevis

Answer 10

Extends the thumb

Question 11

flexor carpi radialis

Answer 11

Flexor = flex, carpi = wrist, radialis = radius
Flexes the hand
Abduct the hand

Question 12

flexor carpi ulnaris

Answer 12

Flexes the hand

Helps with adduction of the hand

Question 13

flexor digitorum superficialis

Answer 13

Help flexes the hand and the middle phalanges of the 2nd - 5th fingers

Question 14

flexor pollicis brevis

Answer 14

Flexes the thumb

Question 15

infraspinatus

Answer 15

Below spine
Help rotate arm laterally
Help hold the head of humerus in glenoid cavity

Question 16

latissimus dorsi

Answer 16

White parts where muscle inserts is called fascia
Prime muscle that’s involved in arm extension
Also helps with arm adduction
Help medially rotate arm

Question 17

opponens pollicis

Answer 17

Helps with opposition of thumb - thumb touching other fingers

Question 18

palmaris longus

Answer 18

Palmaris = palm, longus = long

Help tense the skin and fascia of palm during hand movements

Question 19

pectoralis major

Answer 19

Help adduct and rotate arm

Help with medial arm rotation

Question 20

pectoralis minor

Answer 20

Deep to the pectoralis major
Multiple heads that attach to ribs - stabilize shoulder joint
Assist with contraction of shoulder
Help elevates the ribs

Question 21

rhomboids

Answer 21

Help stabilize scapula

Help square your shoulders

Question 22

serratus minor

Answer 22

Attaches to ribs
Helps lifts ribs which helps with breathing
Helps with protraction of scapula
“Boxer muscle” helps with throwing a punch

Question 23

subscapularis

Answer 23

Below scapula
Deep to pectoralis major
Help rotate arm medially

Question 24

supraspinatus

Answer 24

Above spine
Assist with abduction of arm
Help stabilize shoulder joint
Prevents downward dislocation of humerus

Question 25

teres major

Answer 25

Extend, medially rotate and adduct arm

Question 26

teres minor

Answer 26

Similar actions to infraspinatus
Help rotate arm laterally
Help hold head of humerus in glenoid cavity

Question 27

triceps brachii

Answer 27

Lateral, long, and medial heads
Arm extension
More posterior