Muscular System

Question 1

Maintenance of posture

Answer 1

Voluntary function

Question 2

Accomplishment of various movements

Answer 2

Voluntary function

Question 3

Propulsion of substances through the body passages

Answer 3

Involuntary function

Question 4

Expulsion of stored substances

Answer 4

IInvluntoar function

Question 5

Regulation of size openings

Answer 5

Involuntary function

Question 6

Regulation of tthdeimetaer of tubes

Answer 6

Involuntary functioms

Question 7

Also called skeletal muscle

Answer 7

striated voluntary muscle tissue

Question 8

composed of long, multi-nucleated cylindrical cells

Answer 8

striated voluntary muscle tissue

Question 9

contains thin and transparent sarcolemma

Answer 9

striated voluntary muscle tissue

Question 10

scarcoplasm contains parallel rows of myofibrils with alternating light and dark bands forming striations

Answer 10

striated voluntary muscle tissue

Question 11

found attached to the skeleton by a tendon, responsible for the voluntary movement of the body

Answer 11

striated voluntary muscle tissue

Question 12

also called cardiac muscle

Answer 12

striated involuntary muscle tissue

Question 13

composed of linear, branching bundles of fibers joined end to end by intercalated disc

Answer 13

striated involuntary muscle tissue

Question 14

with elongated nucleus centrally located between diverging ells

Answer 14

striated involuntary muscle tissue

Question 15

found in the walls of the heart bring about the involuntary contraction of the organ

Answer 15

striated involuntary muscle tissue

Question 16

also called visceral muscle

Answer 16

smooth involuntary muscle tissue

Question 17

composed of elongated cells with tapered ends

Answer 17

smooth involuntary muscle tissue

Question 18

cylindrical cells

Answer 18

filamentous

Question 19

tapered ends

Answer 19

fusiform

Question 20

centrally located nucleus

Answer 20

smooth involuntary muscle tissue

Question 21

found in internal organs which bring about involuntary movement in these organs

Answer 21

smooth involuntary muscle tissue

Question 22

principal mover for specific action; deltoid muscle in abduction of arm

Answer 22

agonist or primemover

Question 23

for opposite movement; latissimus dorsi and pectoralis

Answer 23

antagonist

Question 24

helps stabilize movement of one joint; inhibit undesirable movement

Answer 24

synergist

Question 25

fixes the position of the limb when the movement is occurring; biceps and triceps, they hold the shoulder and elbow in position

Answer 25

fixator

Question 26

bend a limb or one part of a limb against another

Answer 26

flexors

Question 27

straighten a limb or one of its component parts

Answer 27

extensors

Question 28

draw a part toward a median line or toward a neighboring part of limb

Answer 28

adductors

Question 29

draw a part away from a median line or from a neighboring part or limb

Answer 29

abductors

Question 30

turn or rotate a part downward on it’s axis, palm of the hand

Answer 30

pronators

Question 31

turn or rotate a part forward and upward on its axis

Answer 31

supinators

Question 32

raise or lift a part as when the lower jaw in closing the mouth

Answer 32

elevators or levators

Question 33

lower or depress a part as when the lower jaw in opening the mouth

Answer 33

depressors

Question 34

draw part together or compress a space such as the pharynx and the abdomen

Answer 34

constrictors

Question 35

widens an opening or a space

Answer 35

dilators

Question 36

constrictors surrounding an opening such as mouth, pylorus and anus

Answer 36

sphincters

Question 37

external connective tissue wrapping

Answer 37

epimysium

Question 38

what the skeletal muscle is make out of

Answer 38

fascicles

Question 39

bundles of individual muscle cells

Answer 39

muscle fibers

Question 40

each fascicle is surrounded by connective tissue layer called the

Answer 40

perimsium

Question 41

within the connective tissue, the third connective tissue layer which separates and electrically insulates the muscle fibers from each other

Answer 41

endomysium

Question 42

each muscle fiber is subdivided by the scarcoplasmic reticulum into smaller cylinders called

Answer 42

myofibrils

Question 43

composed of sarcomeres, attached end to end

Answer 43

myofibril

Question 44

composed the thick myofilaments

Answer 44

myosin

Question 45

compose of thin myofilaements

Answer 45

actin

Question 46

subcomponents of thin myrofilaments

Answer 46

troponin, tropmyosin

Question 47

muscle hemoglobin for transport of oxygen

Answer 47

myoglobin