MUSCULAR SYSTEM

Question 1

It originates from Latin musculus literally means “little mouse”.

Answer 1

MUSCLE

Question 2

muscle originates from Latin _____ literally means “little mouse”.

Answer 2

MUSCULUS

Question 3

MUSCULUS means

Answer 3

LITTLE MOUSE

Question 4

musculus is ______ (nationality)

Answer 4

LATIN

Question 5

It is the SOFT TISSUE of the human body which primarily function for MOVEMENT.

Answer 5

MUSCLE

Question 6

primary function of MUSCLE

Answer 6

MOVEMENT

Question 7

The branch of science which is the STUDY OF MUSCLE is _____.

Answer 7

MYOLOGY

Question 8

Essential Characteristics of Muscles

Answer 8

EXCITABILITY
EXTENSIBILITY
CONTRACTILITY
ELASTICITY

Question 9

It is the ability of muscle to RESPOND TO A STIMULUS

Answer 9

EXCITABILITY

Question 10

It is the ability of muscle cells to SHORTEN FORCEFULLY.

Answer 10

CONTRACTILITY

Question 11

It is the ability of a muscle to be STRETCHED.

Answer 11

EXTENSIBILITY

Question 12

It is the ability of muscle to RECOIL OR BOUNCE BACK to the muscle’s original length after being stretched.

Answer 12

ELASTICITY

Question 13

how many types of MUSCLE TISSUE

Answer 13

3

Question 14

THREE TYPES OF MUSCLE TISSUE

Answer 14

SKELETAL
CARDIAC
SMOOTH

Question 15

also known as STRIATED VOLUNTARY muscle

Answer 15

SKELETAL MUSCLE

Question 16

SKELETAL MUSLCE is also known as

Answer 16

STRIATED VOLUNTARY MUSCLE

Question 17

striated voluntary muscle, multinucleated, attached to skeleton

Answer 17

SKELETAL MUSCLE

Question 18

also known as STRIATED INVOLUNTARY muscle

Answer 18

CARDIAC MUSCLE

Question 19

CARDIAC MUSCLE is also known as

Answer 19

striated involuntary muscle

Question 20

striated involuntary muscle, nuclei are centrally located, with intercalated discs

Answer 20

CARDIAC MUSCLE

Question 21

nucleus of skeletal muscle

Answer 21

multinucleated

Question 22

nucleus of cardiac muscle

Answer 22

centrally located

Question 23

also known as UNSTRIATED/NON-STRIATED INVOLUNTARY muscle

Answer 23

SMOOTH MUSCLE

Question 24

SMOOTH MUSCLE is also known as

Answer 24

unstriated/non-striated involuntary muscle

Question 25

unstriated/non-striated involuntary muscle, cells are short, spindle-shaped and have a single nucleus

Answer 25

SMOOTH MUSCLE

Question 26

nucleus of smooth muscle

Answer 26

single nucleus

Question 27

skeletal muscle: around muscle

Answer 27

EPIMYSIUM

Question 28

skeletal muscle: around fascicles

Answer 28

PERIMYSIUM

Question 29

skeletal muscle: around fibers, or cells

Answer 29

ENDOMYSIUM

Question 30

ALPHABETICAL ORDER OF MUSCLE FROM LARGEST TO SMALLEST:

Answer 30

Fascicle Fiber Fibril Filament

Question 31

made up of actin molecule, tropomyosin and troponin complex

Answer 31

ACTIN MYOFILAMENT

Question 32

composed of three sub-units (I, T and C)

Answer 32

TROPONIN

Question 33

form TWO HELICAL STRAND which are wrapped around actin molecule longitudinally in thin twisted stranded form.

Answer 33

TROPOMYOSIN

Question 34

consists of a long rod-shaped tail called myosin rod and two globular intertwined myosin head. The globular head appear at interval along

Answer 34

MYOSIN FILAMENT

Question 35

long rod-shaped tail in myosin filament

Answer 35

MYOSIN ROD

Question 36

neurotransmitter that binds at a motor end-plate to TRIGGER DEPOLARIZATION

Answer 36

Acetylcholine (ACh)

Question 37

protein that MAKES UP MOST OF THE THIN MYOFILAMENTS in a sarcomere muscle fiber

Answer 37

ACTIN

Question 38

CHANGE IN VOLTAGE of a cell membrane in response to a stimulus that results in TRANSMISSION OF AN ELECTRICAL SIGNAL; unique to neurons and muscle fibers

Answer 38

ACTION POTENTIAL

Question 39

to REDUCE THE VOLTAGE difference between the inside and outside of a cell’s plasma membrane (the sarcolemma for a muscle fiber), making the inside less negative than at rest

Answer 39

DEPOLARIZE

Question 40

SYNAPSE between the axon terminal of a motor neuron and the section of the membrane of a muscle fiber with receptors for the acetylcholine released by the terminal

Answer 40

NEUROMUSCULAR JUNCTION (NMJ)

Question 41

SIGNALING CHEMICAL released by nerve terminals that bind to and ACTIVATE RECEPTORS on target cells

Answer 41

NEUROTRANSMITTER

Question 42

SPACE between a nerve (axon) terminal and a motor end-plate

Answer 42

SYNAPTIC CLEFT

Question 43

PROJECTION of the sarcolemma into the interior of the cell

Answer 43

T-TUBULE

Question 44

the CHANGE IN MEMBRANE POTENTIAL that RETURNS IT TO A NEGATIVE VALUE just after the depolarization phase of an action potential has changed the membrane potential to a positive value

Answer 44

REPOLARIZATION

Question 45

This is a PROPOSED MECHANISM OF MUSCLE CONTRACTION in which the actin and myosin filaments of striated muscle SLIDE OVER EACH OTHER to shorten the length of the muscle fibers which allows bridges to form between actin and myosin, that requires ATP as an energy source.

Answer 45

SLIDING FILAMENT THEORY

Question 46

has LARGE AMOUNTS of red myoglobin, numerous mitochondria, and extensive capillary blood supply

Answer 46

SLOW-TWITCH OXIDATIVE MUSCLE

Question 47

smaller diameter, darker color due to myoglobin, FATIGUE-RESISTANT

Answer 47

SLOW-TWITCH OXIDATIVE MUSCLE FIBERS

Question 48

larger diameter, pale color, EASILY FATIGUED

Answer 48

FAST-TWITCH GLYCOLYTIC MUSCLE FIBERS

Question 49

A CHRONIC AUTOIMMUNE NEUROMUSCULAR DISEASE that causes WEAKNESS IN THE SKELETAL MUSCLES. It came from the Latin and Greek words meaning "grave, or serious, muscle weakness."

Answer 49

MYASTHENIA GRAVIS

Question 50

A disorder characterized by WIDESPREAD MUSCULOSKELETAL PAIN accompanied by fatigue, widespread pain and cognitive difficulties. Causes may include Genetics in origin, infections, physical or emotional trauma.

Answer 50

FIBROMAYGIA

Question 51

FIBROMAYGIA is also called as

Answer 51

fibromyalgia syndrome (FMS)

Question 52

a GROUP OF DISEASES that cause PROGRESSIVE WEAKNESS AND LOSS OF MUSCLE MASS. This condition is due to abnormal genes (mutations) that interfere with the production of proteins needed to form healthy muscle.

Answer 52

MUSCULAR DYSTROPHY

Question 53

This is a condition in which the muscles on one side of a person’s face become weak or paralyzed. It AFFECTS ONLY ONE SIDE OF THE FACE AT A TIME, causing it to droop or become stiff on that side. It's caused by some kind of trauma to the SEVENTH CRANIAL nerve being called the “facial nerve".

Answer 53

BELL'S PALSY

Question 54

which nerve is affected in BELL'S PALSY

Answer 54

SEVENTH CRANIAL NERVE / FACIAL NERVE

Question 55

a TEAR OF THE HAMSTRING FIBERS. This group of muscles are important in extending the hip joint and bending the knee joint.

Answer 55

PULLED HAMSTRING

Question 56

PULLED HAMSTRING is also called as

Answer 56

hamstring strain

Question 57

It is a STRONG, PAINFUL CONTRACTION OR TIGHTENING OF A MUSCLE that comes on suddenly and lasts from a few seconds to several minutes. It often occurs in the legs. This condition is also being called Charley horse. Leg cramps that occur during nighttime are usually sudden spasms, or tightening, of muscles in the calf

Answer 57

MUSCLE CRAMP

Question 58

MUSCLE CRAMP is also being called ___

Answer 58

CHARLEY HORSE

Question 59

a kind of muscle found in the walls of the hollow internal organs such as blood vessels, the GIT, bladder and uterus

Answer 59

SMOOTH MUSCLE

Question 60

a LONG-TERM NEUROMUSCULAR DISEASE that leads to varying degrees of skeletal muscle weakness. The most commonly affected muscles are those of the eyes, face, and swallowing. It can result in double vision, drooping eyelids, trouble talking, and trouble walking.

Answer 60

MYASTHENIA GRAVIS

Question 61

an important molecule in the neuromuscular junction that BREAKS DOWN ACETYCHOLINE.

Answer 61

Acetylcholinesterase

Question 62

During the depolarization phase of an action potential, the PERMEABILITY OF THE PLASMA MEMBRANE to ___.

Answer 62

sodium ions Na+ increases

Question 63

Smooth muscle can both shorten and stretch to a greater extent than the other muscle types. True False

Answer 63

TRUE

Question 64

Cardiac muscle fibers can undergo hypertrophy in response to an increased workload. This is called a ________. physiological enlarged heart pathological enlarged heart none of the given choices

Answer 64

physiological enlarged heart

Question 65

Slow twitch muscle fibers are more resistant to fatigue than the other muscle fiber types. true false

Answer 65

TRUE