Psio 201 Lab Quiz 6

Front 1

Endomysium

Back 1

Layer of areolar CT surrounding indiv muscle fibers

Front 2

Fascicle

Back 2

Bundle of indiv muscle fibers

Front 3

Perimysium

Back 3

Dense regular CT surrounds fascicles

Front 4

Muscle

Back 4

Formed by groups of fascicles

Front 5

Epimysium

Back 5

Dense regular CT surrounds muscles

Front 6

Tendons

Back 6

Formed from endomysium, perimysium, & epimysium that extend beyond ea muscle fiber that attach muscle to bone

Front 7

Order

Back 7

Muscle

Fascicle

Muscle fibers

Myofibrils

Front 8

Sarcolemma

Back 8

Conducts APs

Continuous w/ T-tubules

Front 9

Motor end plate

Back 9

Portion of sarcolemma found underneath synaptic end bulb

Houses Ach receptors

Front 10

Motor unit

Back 10

Motor neuron and all skeletal muscle fibers it innervates

Front 11

Muscle attachment

Back 11

Origin-nonmoving pt of attachment when muscle contracts

Insertion-moves toward origin. Majority of tension developed when muscle contracts focused here.

Front 12

Frontalis

Back 12

Raises eyebrow

Front 13

Occipitalis

Back 13

Draws scalp posteriorly

Front 14

Orbicularis oris

Back 14

Kissing

Front 15

Orbicularis oculi

Back 15

Blinking

Front 16

Zygomatic major

Back 16

Smiling

Front 17

Zygomatic minor

Back 17

Elevates upper lip, exposes upper teeth

Front 18

Platysma

Back 18

Depresses lower lip & mandible; tenses neck skin

Front 19

Temporalis

Back 19

Elevates, retracts mandible

Front 20

Masseter

Back 20

Elevates, protracts, retracts mandible

Front 21

Sternocleidomastoid

Back 21

Head rotation & flexion

Front 22

Rectus abdominis

Back 22

Flexes vertebral column & compresses abdomen

Front 23

External & internal oblique

Back 23

Rotation of trunk, flexion or vertebral column & compression of abdomen

Front 24

Transversus adbominis

Back 24

Coontraction compresses abdomen

Front 25

Erector spinae: iliocostal, longissimus, spinalis

Back 25

Lateral flex & rotate vertebral column, muscle extend vertebral column & maintain erect posture

Front 26

Diaphragm

Back 26

Moves down increase horizontal & vertical dimensions of thorax

Front 27

External intercostals

Back 27

Contraction pulls ribs up & together to expand dimensions of thorax during forced inspiration

Front 28

Internal intercostals

Back 28

Contraction pulls ribs down & together to decrease dimensions of thorax during forced expiration

Front 29

Pectoralis minor

Back 29

Depresses & protracts scapula

Front 30

Trapezius

Back 30

Superior- elevates scapula & clavicle & extends head

Middle- adducts scapula

Inferior- depresses scapula

Front 31

Levator scapulae

Back 31

Elevates scapula

Front 32

Rhomboid major & minor

Back 32

Elevates, adducts, inferiorly rotates scapula

Front 33

Serratus anterior

Back 33

Abducts scapula & rotates superiorly

Front 34

Pectoralis major

Back 34

Flexes, adducts, medially rotates arm

Front 35

Latissimus dorsi

Back 35

Adducts, extends, medially rotates arm

Front 36

Deltoid

Back 36

Abduct arm, flex, medially rotate arm, extend, laterally rotate arm

Front 37

Supraspinatus

Back 37

Abducts arm

Front 38

Infraspinatus

Back 38

Laterally rotates, adducts arm

Front 39

Teres major

Back 39

Extends, adducts, medially rotates arm

Front 40

Teres minor

Back 40

Extends, laterally rotates arm

Front 41

Subscapularis

Back 41

Medially rotates arm

Front 42

Biceps brachii

Back 42

Flexes, supinates forearm; flexes arm

Front 43

Brachialis & brachioradialis

Back 43

Flexes forearm

Front 44

Triceps brachii

Back 44

Extends forearm & arm

Front 45

Pronator teres

Back 45

Pronates forearm, flexes arm

Front 46

Flexor carpi radialis

Back 46

Flexes, abducts hand

Front 47

Flexor carpi ulnaris

Back 47

Flexes, adducts hand

Front 48

Palmaris longus

Back 48

Flexes hand

Front 49

Flexor digitorum superficialis

Back 49

Flexes middle phalanx, proximal phalanx & hand

Front 50

Flexor digitorum profundus

Back 50

Flexes distal & middle phalanges, proximal phalanx, hand

Front 51

Extensor digitorum

Back 51

Extends distal, middle phalanges, proximal phalanx, hand

Front 52

Extensor carpi ulnaris & extensor carpi radialis brevis

Back 52

Extends & abducts hand

Front 53

Extensor digiti minimi

Back 53

Extends proximal phalanx of little finger & hand

Front 54

Abductor pollicis longus

Back 54

Abducts, extends thumb & abducts hand

Front 55

Extensor pollicis brevis

Back 55

Extends pollicis & abducts hand

Front 56

Iliopsoas: iliacus & psoas major

Back 56

Flex thigh

Front 57

Piriformis

Back 57

Laterally rotate & adducts thigh

Front 58

Tensor fascia latae

Back 58

Flexes & abducts thigh

Front 59

Gluteus maximus

Back 59

Extends & laterally rotates thigh

Front 60

Gluteus medius

Back 60

Abducts, medially rotates thigh

Front 61

Gluteus minimus

Back 61

Abducts, medially rotates thigh

Front 62

Gracilis

Back 62

Adducts thigh & flexes leg

Front 63

Adductor magnus

Back 63

Adducts, medially rotates thigh

Front 64

Adductor longus

Back 64

Adducts, flexes, medially rotates thigh

Front 65

Adductor brevis

Back 65

Adducts, medially rotates, flexes thigh

Front 66

Quadriceps femoris: rectus femoris

Back 66

Flexes thigh & extends leg

Front 67

Quadriceps femoris: vastus lateralis, vastus medialis, vastus intermedius

Back 67

Extends leg

Front 68

Sartorius

Back 68

Flexes leg, flexes & laterally rotates thigh

Front 69

Hamstring group: biceps femoris, semimembranosus, semitendinosus

Back 69

Flexes leg & extends thigh

Front 70

Triceps surae: gastrocnemius

Back 70

Plantar flexes foot & flexes leg

Front 71

Triceps surae: soleus

Back 71

Plantar flexes foot

Front 72

Tibialis anterior

Back 72

Dorsiflexes & inverts foot

Front 73

Tibialis posterior

Back 73

Inverts & plantar flexes foot

Front 74

Fibularis brevis

Back 74

Everts, plantar flexes foot

Front 75

Extensor digitorum longus

Back 75

Dorsiflexes foot & extends digits 2-5

Front 76

Flexor digitorum longus

Back 76

Plantar flexes foot, flexes digits 2-5

Front 77

Flexor hallucis longus

Back 77

Plabtar flexes foot & flexes great toe

Front 78

Isometric

Back 78

No chg in muscle length

Tension development

Front 79

Isotonic

Back 79

Tension constant while muscle length chgs

Front 80

Spatial summation

Back 80

Recruit/activate more motor units

Front 81

Temporal summation

Back 81

Increase rate action potentials propagated to muscle fibers

Front 82

EMG (electromyography)

Back 82

Technique used monitor electrical activity of muscle cells

Front 83

Ramp contraction

Back 83

Front 84

Maximal voluntary contraction

Back 84

Front 85

Submaximal contraction

Back 85