Muscular System

Question 1

Muscle fiber=
Myo & mys=
Sarco=

Answer 1

Muscle cell
Muscle
Flesh

Question 2

3 muscle types

Answer 2

Skeletal
Smooth
Cardiac

Question 3

Smooth muscle

Answer 3

Single,uninucleate
No striations
Involuntary
Hollow organs

Question 4

Cardiac Muscle

Answer 4

In heart
Involuntary
Striated, uninucleate, branching
Intercalated discs

Question 5

Skeletal muscles

Answer 5

Tendon to bone
Single, long, multinucleate
Striated
Voluntary

Question 6

Endomysium

Answer 6

Enclosed single muscle fiber

Question 7

Perimysium

Answer 7

Wraps around fascicle(bundle) of muscle fibers

Question 8

Epimysium

Answer 8

Covers the entire skeletal muscle

Question 9

Tendon

Answer 9

Cordlike

Crosses a joint

Question 10

Aponeuroses

Answer 10

Sheet like

Attaches muscles indirectly to bone, cartilage, or connective tissue coverings

Question 11

Sarcolemma

Answer 11

Specialized plasma membrane

Question 12

Myofibrils

Answer 12

Long organelles inside cell

Distinct “bands”

Question 13

Actin

Answer 13

I band

Light

Question 14

Myosin

Answer 14

A band
Entire length
Inside part

Question 15

Sarcomere

Answer 15

Contractile unit of muscle fiber

Made of over lapping mayo filaments

Question 16

Cross bridges

Answer 16

Myosin heads that attach to binding sites

Question 17

Origin

Answer 17

Immovable

Question 18

Insertion

Answer 18

Attachment to moveable bone

Question 19

Prime mover

Answer 19

Major responsibility for movement

Question 20

Antagonist

Answer 20

Opposes prime mover

Question 21

Synergist

Answer 21

Aids prime mover

Prevents unwanted movement

Question 22

Fixator

Answer 22

Holds bone still

Stabilizes joint

Question 23

Flexion

Answer 23

Decrease angle

Bones closer

Question 24

Extension

Answer 24

Increases angle

Question 25

Abduction

Answer 25

Limb away from midline

Question 26

Adduction

Answer 26

Towards midline

Question 27

Rotation

Answer 27

Movement around longitudinal | "No"

Question 28

Circumduction

Answer 28

Combination

Question 29

Dorsiflexion

Answer 29

Towards shin

Question 30

Plantar Flexion

Answer 30

Toes down

Question 31

Inversion

Answer 31

Medially

Question 32

Eversion

Answer 32

Laterally

Question 33

Supination

Answer 33

Forearm rotates laterally so palm faces anteriorly(parallel)

Question 34

Pronation

Answer 34

Forearm rotates medially so palm faces posteriorly(radius over ulna)

Question 35

Frontalis

Answer 35

Raise eyebrows

Question 36

Orbicularis oculi

Answer 36

Closes eyes, squints, blink, wink

Question 37

Orbicularis oris

Answer 37

Closes mouth, and protrudes lips

Question 38

Buccinator

Answer 38

Flattens cheek | Chew

Question 39

Zygomaticus

Answer 39

Raises corners of mouth | Smiling

Question 40

Masseter

Answer 40

Prime mover of jaw closure | Elevates mandible

Question 41

Temporalis

Answer 41

Synergist of masseter | Closes jaw

Question 42

Platysma

Answer 42

Pulls corners of mouth inferiorly

Question 43

Sternocleidomastoid

Answer 43

Flexes neck | Rotates heAd

Question 44

Pectoralis major

Answer 44

Adduct & flexes humerus

Question 45

External intercostals

Answer 45

Raises rib cage

Question 46

Internal intercostals

Answer 46

Depresses rib cage

Question 47

Rectus abdominis

Answer 47

Flexes vertebral column | Compresses abdominal contents

Question 48

Obliques

Answer 48

Flex vertebral column Rotates trunk Bend laterally

Question 49

Transversus abdominis

Answer 49

Compresses abdominal contents

Question 50

Trapezius

Answer 50

Elevates, depresses, adducts, stabilizes scapula | Extends neck

Question 51

Latissimus dorsi

Answer 51

Extends adducts humerus | Swimmers muscle

Question 52

Erector spinae

Answer 52

Back extension 3 muscle groups Spine fixators

Question 53

Deltoid

Answer 53

Arm abduction

Question 54

Biceps brachii

Answer 54

Flexes elbow | Supinate a forearm

Question 55

Triceps brachii

Answer 55

Elbow extension

Question 56

Gluteus Maximus

Answer 56

Hip extension

Question 57

Gluteus medius

Answer 57

Hip abduction | Steadies pelvis

Question 58

Iliopsoas

Answer 58

Deep 2-part for hip Flexion | Keeps upper body from falling backwards

Question 59

Adductor muscles

Answer 59

Adducts thighs

Question 60

Hamstring group

Answer 60

Thigh/hip extension & knee Flexion Biceps femoris Semimembranosus Semitendinosus

Question 61

Sartorius

Answer 61

Weak thigh flexor | "Tailors"

Question 62

Quadriceps group

Answer 62

``` Extends knee & flexes hip Rectus femoris Vastus lateralis Vastus medialis Vastus intermedius ```

Question 63

Tibialis anterior

Answer 63

Dorsiflexion & foot inversion

Question 64

Fibularis muscle

Answer 64

Plantar Flexion & foot inversion

Question 65

Gastrocnemius

Answer 65

2-bellied Prime mover for plantar Flexion Inserts into calcaneal tendon

Question 66

Soleus

Answer 66

Plantar Flexion

Question 67

Intramuscular injection Less than 5ml More than Infants

Answer 67

Deltoid Gluteus medius Vastus lateralis Rectus femoris

Question 68

Function

Answer 68

Produce movement Generate heat Stabilize joints Maintain posture