Chapter 6- Muscular System

Front 1

Trapezius

Back 1

Extends neck & adduced scapula

Front 2

Latissimus dorsi

Back 2

Extends & adducts humerus

Front 3

Erector spinae

Back 3

Extends the back

Front 4

Quadratus lumborum

Back 4

Flexes the spine laterally; extends spine

Front 5

Deltoid

Back 5

Abducts humerus

Front 6

Triceps brachii

Back 6

Extends elbow

Front 7

Flexor Capri radialis

Back 7

Flexes wrist & abducts hand

Front 8

Flexor carpi ulnaris

Back 8

Flexes wrist & adducts hand

Front 9

Flexor digitorium superficialis

Back 9

Flexes wrist & fingers

Front 10

Extensor carpi radialis

Back 10

Extends wrist & abducts hand

Front 11

Extensor digitorium

Back 11

Extends fingers and wrist

Front 12

Gluteus maximus

Back 12

Extends hip (when forceful extension is required)

Front 13

Gluteus medius

Back 13

Abducts thigh; steadies pelvis during walking

Front 14

Hamstring muscles

Back 14

Flex knee & extend hip

Front 15

Gastrocnemius

Back 15

Plantar flexes foot & flexes knee

Front 16

Soleus

Back 16

Plantar flexes foot

Front 17

Frontalis orbicularis occuli

Back 17

Raises eyebrows, blinks and closes eyes

Front 18

Orbicularis oris

Back 18

Closes & protrudes lips

Front 19

Temporalis

Back 19

Closes jaw

Front 20

Zygomaticus

Back 20

Raises corners of mouth

Front 21

Masseter

Back 21

Closes jaw

Front 22

Buccinator

Back 22

Compressed cheeks as in whistling & sucking; holds food between teeth during chewing

Front 23

Sternocleidomastoid

Back 23

Flexes neck; rotates the head

Front 24

Platysma

Back 24

Pulls corners of the mouth inferiorly

Front 25

Pectoralis major

Back 25

Adducts & flexes humerus

Front 26

Rectus abdominis

Back 26

Flexes vertebral column

Front 27

External oblique

Back 27

Flexes & rotates vertebral column

Front 28

Biceps brachii

Back 28

Flexes elbow & supinate forearm

Front 29

Brachialis

Back 29

Flexes elbow

Front 30

Deltoid

Back 30

Abducts arm

Front 31

lliopsoas

Back 31

Flexes hip

Front 32

Adductor muscles

Back 32

Adducts thigh

Front 33

Sartorius

Back 33

Flexes thigh on hip

Front 34

Quadriceps

Back 34

All extend knee; rectus femoris also flexes hip on thigh

Front 35

Tibialis anterior

Back 35

Doriflexes & inverts foot

Front 36

Extensor digitorium longus

Back 36

Extends toes & dorsiflexes foot

Front 37

Fibularis muscles

Back 37

Plantar flex & evert foot

Front 38

Gluteus medius, Vastus lateralis, deltoid

Back 38

Muscles where injections can be administered

Front 39

Adduction

Back 39

Back (Definition)

Front 40

Abduction

Back 40

Front 41

Flexion & extension

Back 41

Back (Definition)

Front 42

Circumduction

Back 42

Front 43

Dorsiflexion

Back 43

Front 44

Plantar flexion

Back 44

Back (Definition)

Front 45

Supination

Back 45

Back (Definition)

Front 46

Pronation

Back 46

Back (Definition)

Front 47

Skeletal, cardiac, smooth

Back 47

3 types of muscles

Front 48

Motor neuron

Back 48

Skeletal muscles must be stimulated by ____ to contract

Front 49

Motor unit

Back 49

One motor neuron & all the skeletal cells stimulated by that neuron

Front 50

Neuromuscular junction

Back 50

Association site of axon terminal if the motor neuron & muscle

Front 51

Walls of hollow organs

Back 51

Smooth muscle is usually found in...

Front 52

Synaptic cleft

Back 52

Gap between the nerve and muscle

Front 53

Neurotransmitter

Back 53

Chemical released by nerve upon arrival of nerve impulses

Front 54

Acetylcholine

Back 54

Neurotransmitter for skeletal muscle

Front 55

Bones, cartilages, connective tissue coverings

Back 55

Sites of muscle attachment

Front 56

Excitability

Back 56

Ability to receive & respond to stimulus

Front 57

Contratibility

Back 57

Ability to shorten when an adequate stimulus is received

Front 58

Extensibility

Back 58

Ability of muscle cells to be stretched

Front 59

Elasticity

Back 59

Ability to recoil & resume resting length after stretching

Front 60

Skeletal, cardiac, smooth

Back 60

3 types of muscles

Front 61

Motor neuron

Back 61

Skeletal muscles must be stimulated by ____ to contract

Front 62

Motor unit

Back 62

One motor neuron & all the skeletal cells stimulated by that neuron

Front 63

Neuromuscular junction

Back 63

Association site of axon terminal if the motor neuron & muscle

Front 64

Walls of hollow organs

Back 64

Smooth muscle is usually found in...

Front 65

Synaptic cleft

Back 65

Gap between the nerve and muscle

Front 66

Neurotransmitter

Back 66

Chemical released by nerve upon arrival of nerve impulses

Front 67

Acetylcholine

Back 67

Neurotransmitter for skeletal muscle

Front 68

Bones, cartilages, connective tissue coverings

Back 68

Sites of muscle attachment

Front 69

Excitability

Back 69

Ability to receive & respond to stimulus

Front 70

Contratibility

Back 70

Ability to shorten when an adequate stimulus is received

Front 71

Extensibility

Back 71

Ability of muscle cells to be stretched

Front 72

Elasticity

Back 72

Ability to recoil & resume resting length after stretching

Front 73

Graded responses

Back 73

Different degrees of skeletal muscle shortening

Front 74

Frequency of muscle stimulation, # of cells being stimulated at one time

Back 74

Graded responses can be produced by changing ________.