2/13 Quiz

Question 1

Lumbricals: function

Answer 1

4 muscles. Flexes at metacarpophalangeal joints while extending interphalangeal joints (2-5)

Question 2

subscapularis : function

Answer 2

(rotator cuff) medial rotation at GH joint (& stabilizes GH)

Question 3

deltoid : function

Answer 3

arm abduction at GH joint (& stabilizes GH joint)

Question 4

flexor digitorum superficialis: function

Answer 4

flexes proximal interphalangeal joints of the index, middle, ring, and little fingers (2-5). Can also flex metacarpophalangeal joints of the same fingers and the wrist joint

Question 5

adductor pollicis: function

Answer 5

adducts thumb

Question 6

extensor carpi radialis**: function

Answer 6

extend and abduct the wrist (longus and brevis*****)

Question 7

carpometacarpal joints: bones, types of movement

Answer 7

5 of them. the thumb one - metacarpal 1 + trapezium allows for flexion, extension, abduction, adduction and opposition
2-5 allow only gliding movements.

Question 8

pronator teres: function

Answer 8

pronation of forearm

Question 9

abductor pollicis longus: function

Answer 9

abducts carpometacarpal joint of thumb, also accessory extensor of thumb

Question 10

acromioclavicular joint : bones, types of movement

Answer 10

acromion of scapula + lateral end of clavicle. synovial joint, gliding anterior/posterior and vertically. some minimal rotation

Question 11

palmar interosseous: function

Answer 11

4 muscles. adduction of 1,2,4,5 (not middle finger only) at the metacarpophalangeal joints.

Question 12

extensor carpi ulnaris: function

Answer 12

extends and adducts the wrist

Question 13

brachioradialis : function

Answer 13

accessory flexor of elbow joint when forearm is midpronated

Question 14

abductor digiti minimi: function

Answer 14

abducts pinky at metacarpophalangeal joint

Question 15

distal radioulnar joint: bones, types of movement

Answer 15

pronation & supination

Question 16

wrist joint : bones, types of movement

Answer 16

aka radiocarpal. distal end of radius + articular disc above, and the scaphoid, lunate, and triquetral bones below.
movement - flexion, extension, abduction, adduction

Question 17

Extensor Indicis: function

Answer 17

extends index finger

Question 18

proximoradioulnar joint: bones, types of movement

Answer 18

radius ulna, pronation and supination of forearm. technically not part of elbow joint.

Question 19

Bicep Brachii - Long head : function

Answer 19

major flexor of forearm at elbow, and supinator of forearm

Question 20

Infraspinatus : function

Answer 20

( rotator cuff) lateral rotation at GH joint (& stabilizes GH joint)

Question 21

dorsal interosseous: function

Answer 21

abduction of 2-4 at the metacarpophalangeal joints

Question 22

flexor pollicis longus: function

Answer 22

flexes interphalangeal joint of thumb, can also flex metacarpophalangeal joint of thumb.

Question 23

flexor carpi radialis: function

Answer 23

flexes and abducts the wrist

Question 24

supinator: function

Answer 24

supination of forearm

Question 25

metacarpophalangeal joints: bones, types of movement

Answer 25

(condylar joints). flexion, extension, abduction, adduction, circumduction, limited rotation

Question 26

Supraspinatus : function

Answer 26

(rotator cuff) arm abduction at GH joint (& stabilizes GH joint)

Question 27

flexor carpi ulnaris: function

Answer 27

flexes and adducts wrist joint

Question 28

flexor digitorum profundus : function

Answer 28

flexes distal interphalangeal joints of 2-5. can also flex metacarpophalangeal joints of the same fingers and the wrist joint.

Question 29

interphalangeal joints: bones, types of movement

Answer 29

proximal and distal ones (except thumb, only has one).

-flexion & extension

Question 30

Teres Minor: function

Answer 30

(rotator cuff) lateral rotation at GH joint ( & stabilizes)

Question 31

sternoclavicular joint : bones, types of movement

Answer 31

manubrium of sternum + medial articulation of clavicle. synovial joint, gliding anterior/posterior and vertically. some minimal rotation

Question 32

pronator quadratus: function

Answer 32

pronation of forearm

Question 33

coracobrachialis: function

Answer 33

flexor of arm at glumerohomeral joint

Question 34

Glenohumeral joint : bones, types of movement

Answer 34

scapula + humerus. flexion, extension, abduction, adduction, circumduction, pronation (medial rotation), retraction (lateral rotation)

Question 35

Teres Major: function

Answer 35

medial rotation at GH joint (& stabilizes GH joint)

Question 36

Elbow joint: : bones, types of movement

Answer 36

3 articulations (humeroulnar, humeroradial, and radioulnar) . elbow joint really only allows flexion & extension. Also supination/pronation at the elbow (done by proximal radio-ulnar joint)

Question 37

Carpal joints: bones, types of movement

Answer 37

synovial joints between the carpal bones. minimal movement. but contributes to position of hand during abduction, adduction, flexion and extension of wrist.

Question 38

extensor pollicis longus: function

Answer 38

extends interphalangeal joint of thumb. can also extend carpometacarpal and metacarpophalangeal joints of thumb

Question 39

Triceps brachii - medial & lateral heads: function

Answer 39

extension of the forearm at the elbow joint (only)

Question 40

extensor digitorum: function

Answer 40

extends the index, middle, ring, and little fingers, can also extend the wrist

Question 41

Bicep Brachii - short head : function

Answer 41

accessory flexor of arm at GH joint

Question 42

triceps brachii - long head : function

Answer 42

extension of the forearm at the elbow joint (all triceps) accessory adductor & extensor of arm at GH Joint.

Question 43

humeroulnar joint : bones, types of movement

Answer 43

(posterior and anterior) flexion & extension of forearm

Question 44

brachialis : function

Answer 44

flexor of forearm at elbow joint