lab 8 - muscles of upper and lower appendages

Question 1

supinator

Answer 1

action: supinates hand
O - lateral epicondyle of humerus
I - proximal radius

Question 2

pronator teres

Answer 2

pronates hand, flexes forearm
O - medial epicondyle of humerus
I - lateral, middle region of radius

Question 3

pronator quadratus

Answer 3

pronates hand

Question 4

biceps brachii

Answer 4

flexes arm, flexes forearm
O - long head: superior margin of glenoid cavity; Short head: coracoid process of scapula
I - radial tuberosity

Question 5

coracobrachialis

Answer 5

flexes and medially rotates arm
O - coracoid process of scapula
I - midmedial shaft of humerus

Question 6

brachialis

Answer 6

flexes forearm

Question 7

brachioradialis

Answer 7

flexes forearm
O - superior surface of lateral condyle of humerus
I - styloid process of radius

Question 8

flexor carpi radialis

Answer 8

flexes and abducts wrist
O - medial epicondyle of humerus
I - metacarpals II and III

Question 9

palmaris longus

Answer 9

flexes hand

Question 10

flexor carpi ulnaris

Answer 10

flexes and adducts wrist
O - medial epicondyle of humerus
I - pisiform, hamulus of hamate, and metacarpal V

Question 11

flexor digitorum superficialis

Answer 11

flexes proximal and middle phalanges, flexes wrist

Question 12

triceps brachii

Answer 12

extends and adducts arm, extends forearm
O - inferior surface of glenoid cavity
I - olecranon of ulna

Question 13

extensor carpi ulnaris

Answer 13

extends and adducts wrist
O - lateral epicondyle of humerus
I - metacarpal V

Question 14

extensor digiti minimi

Answer 14

extends and adducts wrist

Question 15

extensor digitorum

Answer 15

extends phalanges, extends hand
O - lateral epicondyle of humerus
I - phalanges II through V

Question 16

extensor carpi radialis brevis

Answer 16

extends and abducts wrist
O - lateral epicondyle of humerus
I - metacarpal III

Question 17

extensor carpi radialis longus

Answer 17

extends and abducts wrist
O - lateral epicondyle of humerus
I - metacarpal II

Question 18

gluteus maximus

Answer 18

extends and abducts thigh
O - iliac crest, sacrum, coccyx
I - greater trochanter of femur

Question 19

gluteus medius

Answer 19

abducts and medially rotates thigh

Question 20

gluteus minimus

Answer 20

abducts and medially rotates thigh

Question 21

biceps femoris

Answer 21

extends thigh, flexes knee
O - ischial tuberosity and linea aspera
I - head of fibula

Question 22

semitendinosus

Answer 22

extends thigh, flexes knee
O - ischial tuberosity
I - proximal, medial tibia

Question 23

semimembranosus

Answer 23

extends thigh, flexes knee
O - ischial tuberosity
I - medial condyle of tibia

Question 24

rectus femoris

Answer 24

flexes thigh, extends leg
O - anterior inferior illiac spine, margin of acetabulum
I - tibial tuberosity

Question 25

vastus lateralis

Answer 25

extends leg O - greater trochanter of femur, linea aspera I - tibial tuberosity

Question 26

vastus intermedius

Answer 26

extends leg O - proximal anterior femur I - tibial tuberosity

Question 27

vastus medialis

Answer 27

extends leg O - linea aspera I - tibial tuberosity

Question 28

sartorius

Answer 28

flexes and laterally rotates thigh, flexes knee O - anterior superior iliac spine I - proximal, medial tibia

Question 29

tensor fasciae

Answer 29

(attached to iliotibial tract) flexes and medially rotates thigh, extends and laterally rotates knee

Question 30

gracilis

Answer 30

flexes and medially rotates leg O -pubis, ischium I - proximal, medial tibia

Question 31

adductor longus

Answer 31

adducts, flexes, and medially rotates thigh O - pubis I - linea aspera

Question 32

adductor magnus

Answer 32

adducts, flexes, and medially rotates thigh

Question 33

adductor brevis

Answer 33

adducts thigh

Question 34

pectineus

Answer 34

adducts, flexes thigh

Question 35

illiopsoas (illiacus and Psoas major)

Answer 35

flexes thigh and lumbar vertebrae

Question 36

gastrocnemius

Answer 36

flexes leg, plantar flexes foot O - posterior condyles of femur I - calcaneus

Question 37

soleus

Answer 37

plantar flexes foot O - posterior, proximal tibia and fibula I - calcaneus

Question 38

flexor digitorum longus

Answer 38

flexes toes, plantar flexes and inverts foot

Question 39

tibialis posterior

Answer 39

plantar flexes and inverts foot

Question 40

flexor hallucis longus

Answer 40

flexes hallux (big toe), inverts foot

Question 41

fibularis longus

Answer 41

plantar flexes and everts foot

Question 42

fibularis brevis

Answer 42

plantar flexes and everts foot

Question 43

extensor digitorum longus

Answer 43

extends toes, dorsiflexes foot

Question 44

extensor hallucis longus

Answer 44

extends hallux (big toe), dorsiflexes foot

Question 45

tibialis anterior

Answer 45

dorsiflexes and inverts foot O - lateral, proximal condyle of tibia I - first metatarsal, medial cuneiform