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Quiz 3 > Bank > Flashcards

Bank Flashcards

1
Q

Give function of Agonist

A

Primarily responsible for producing a particular movement

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2
Q

Function of antagonist

A

Reverse a movement

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3
Q

Name 2 criteria used to classify muscles

A

Direction of muscle fibers
Relative size of muscle

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4
Q

Each motor neuron axon breaks up into many branches called

A

Axonal terminals

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5
Q

Most of the muscles of the superficial anterior compartment antebrachium/forearm have an Orgin in some part of the

A

Humerus

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6
Q

Most of the muscles of the deep posterior compartment antebrachium/forearm have an Orgin in some part of the

A

Ulna

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7
Q

The action of all of the muscles of the posterior compartment of the lower leg is

A

Plantar flexion of foot

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8
Q

Epimysia blend into strong for sheet like structures called

A

Aponeurosis

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9
Q

Most posterior muscles of the trunk have insertions of some part of the

A

scapula

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10
Q

What is the action of most muscles of the anterior upper arm compartment

A

Forearm flexion

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11
Q

What is the action of the posterior upper arm compartment

A

Forearm extension

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12
Q

The action of most deep posterior compartment antebrachium muscles is

A

Thumb extension

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13
Q

Muscle cells are bundles of

A

Myofibrils

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14
Q

All of the muscles of the lateral compartment of the lower leg have origins in some part of the

A

Fibula

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15
Q

The action of most of the muscles of the medial leg compartment is

A

Thigh adduction

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16
Q

Most muscles of the anterior upper leg compartment have insertions at the

A

Patella

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17
Q

All of the gluteal muscles have insertions at some part of

A

Femur

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18
Q

All of the gluteal muscles have origins at some sort of

A

Ilium

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19
Q

All of the posterior compartment muscles of the lower leg have origins at the

A

Ischial tuberosity

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20
Q

The action of all the muscles of the posterior compartment of the lower leg is

A

Plantar flexion of foot

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21
Q

All of the muscles of the lateral compartment of the lower leg have an insertions at one of the

A

Metatarsals

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22
Q

Sustained fusion of individual muscle twitches is known as

A

Tetanus

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23
Q

All of the muscles of the anterior lower leg compartment have insertions at some part of a

A

Metatarsals

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24
Q

BLANK recording of the electrical activity of muscles

A

Electromyogram

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25
Q

BLANK is an EMG where a needle electrode is inserted through the skin into the muscle whose electrical activity is to be measured

A

Intramuscular EMG

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26
Q

BLANK means changing the strength of muscle contraction or the extent of shortening in proportion to the load placed on the muscle by way of motor unit recruitment

A

Graded contraction of skeletal muscle

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27
Q

All of the posterior compartment muscles of the lower leg have Orgin is at the

A

Ischial tuberosity

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28
Q

The muscle force generated by muscle activity is expressed in BLAMK units

A

Kilograms

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29
Q

The strength of electrical current generated by muscle activity is expressed in

A

Millivolts

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30
Q

The sequential activation of motor units to perform a designed task known as

A

Motor unit recruitment

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31
Q

BLANK is the measurement of power

A

Dynamometry

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32
Q

What was the hand dynamometer/ dynagrip used to show

A

Force generated

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33
Q

The staircase effect of slight increases in contractile strength of progressive muscle twitches due to more calcium and heat as each ensuing twitch occurs is called

A

Treppe

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34
Q

Detection amplification and recording of changes in skin voltage produced by underlying skeletal muscle contraction

A

Electromyography

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35
Q

Force generated by stretching a muscle and sue to its elastic properties is called

A

Passive force

36
Q

BLANK stimulation causes skeletal muscle to contract

A

Electrical stimulation

37
Q

Single muscle contraction

A

Muscle twitch

38
Q

Blank stimulus leads to a contractile response

A

Threshold stimulus

39
Q

Restoring the resting membrane potential is called

A

Re-polarization

40
Q

Muscle stimulation in rapid succession of the same intensity but a greater frequency causing a greater response is called

A

Wave summation

41
Q

What is the waste product produced under fatigues muscle conditions

A

Lactic acid

42
Q

What is the normal resting potential difference/ voltage of muscle fiber / cell

A

Resting membrane potential-60 to -90 milivolts

43
Q

A contraction in which muscle length doesn’t change but force generated can is called BLANK contraction

A

Isometric

44
Q

Force generated by the physiological contraction of muscle is called

A

Active force

45
Q

Period after depolarization when sodium gates have closed and potassium gates open and stimulus may lead to another action potential is called

A

Relative refractory period

46
Q

BLANK stimulus leads to a contractile repsonse

A

Threshold stimulus

47
Q

DESCRIBE ONE WAY OF CONTROLLING THE DEGREE OF SKELETAL MUSCLE CONTRACTION?

A

ACTIVATING A DESIRED NUMBER OF MOTOR UNITS WITHIN THE MUSCLE /

48
Q

WHEN _____________ MUSCLE CONTRACTS BLOOD CIRCULATES, DELIVERING NUTRIENTS TO CELLS AND REMOVING CELL WASTE

A

Cardiac

49
Q

A _____________ IS A GRAPHIC RECORDING OBTAINED BY USING A DYNAMOMETER

A

Dynagram

50
Q

______________ IS THE MEASUREMENT OF POWER.

A

Dynamometery

51
Q

Define MECHANICAL WORK PERFORMED BY

A

Mechanical work performed when the muscle contracts and an object is moved.

52
Q

BLANK is the combination of a single motor neuron and all of the muscle fibers it’s control

A

Motor unit

53
Q

BLANK is the amount of work done per unit of time

A

Power

54
Q

CONTRACTION OF __________MUSCLE MOVES ONE
PART OF THE BODY WITH RESPECT TO ANOTHER
PART

A

SKELETAL

55
Q

___________ IS THE NAME OF THE TYPE OF EMG WHERE THE ELECTRODES ARE PLACED ON THE
SKIN OVERLYING THE MUSCLE

A

SURFACE ELECTROMYOGRAPHY/ SURFACE EMG

56
Q

BLANK is a constant state of slight tension that serves to maintain the muscles in a state of readiness

A

Tonus

57
Q

WHEN DOES FATIGUE OCCUR?

A

Build up of lactic acid

58
Q

NAME TWO DESCRIPTIVE TERMS USED WHEN CLASSIFYING MUSCLES BY THEIR NUMBER OF ORIGINS

A

Bicep and triceps

59
Q

NAME TWO DESCRIPTIVE TERMS USED WHEN CLASSIFYING MUSCLES BY THEIR RELATIVE SIZE

A

Maximus, minimus

60
Q

NAME TWO DESCRIPTIVE TERMS USED WHEN CLASSIFYING MUSCLES BY THE DIRECTION OF THEIR MUSCLE FIBERS

A

Rectus, oblique

61
Q

Epimysia blend into coarse sheets of connective tissue that bind muscles into functional groups called

A

Deep fascia

62
Q

BLANK is the areolar connective tissue layer surrounding each individual muscle fiber

A

Endomysium

63
Q

A bundle of several sheathed muscle fibers wrapped together by a collagenic membrane, are called

A

Fascicles

64
Q

Range of muscle fiber diameter

A

10-100 μm

65
Q

Range of muscle fiber length

A

6-25 cm

66
Q

Give the function of fixators

A

IMMOBILIZE THE ORIGIN OF A PRIME mover

67
Q

Neuron and all the muscle cells it stimulates make up the functional structure called

A

Motor unit

68
Q

Several sheated muscle fibers are wrapped together by a collagenic membrane called

A

Perimysium

69
Q

BLANK ARE THE ACTUAL CONTRACTILE UNITS OF A MUSCLE.

A

Sacromeres

70
Q

THE BULK OF THE BODY’S MUSCLE IS COMPOSED OF WHICH MUSCLE TYPE?

A

Skeletal

71
Q

NAME THE FUNCTION OF SYNERGISTS

A

AID THE ACTION OF AGONISTS

72
Q

EPIMYSIA BLEND INTO STRONG CORD-LIKE
STRUCTURES CALLED _______

A

Tendons

73
Q

How MANY THIN FILAMENTS SURROUND EVERY
THICK FILAMENT IN EACH MYOFIBRIL?

A

Thick Filaments are surrounded by 6 thin filaments

74
Q

HOW MANY THICK FILAMENTS SURROUND EVERY
THIN FILAMENT IN EACH MYOFIBRIL

A

Thin filaments surround by 3 thick filaments

75
Q

GIVE THE TWO OTHER NAMES BY WHICH SKELETAL
MUSCLES MUSCLES ARE KNOWN (HINT: CONTROL/appearance

A

Voluntary control and striated

76
Q

THE PERIOD AFTER DEPOLARIZATION WHEN SODIUM GATES ARE STILL OPENED AND STIMULUS
WILL NOT CAUSE AN ACTION POTENTIAL IS
CALLED?

A

Absolute Refractory period

77
Q

What is the name of the neurotransmitter
THAT ENTERS THE SYNAPTIC CLEFT FROM
VESICLES IN THE AXON TERMINAL?

A

Acetylcholine

78
Q

WHAT IS THE ENERGY THAT IS USED TO DRIVE
MUSCLE CONTRACTION CALLED?

A

Atp

79
Q

AN EVENT IN WHICH THE CELL BECOMES LESS
NEGATIVELY CHARGED IS CALLED?

A

Depolarization

80
Q

A CONTRACTION IN WHICH MUSCLE LENGTH
CHANGES, BUT FORCE GENERATED STAYS THE
SAME IS CALLED AN _______________
CONTRACTION?

A

Isotonic Contraction

81
Q

THE PERIOD OF A MUSCLE TWITCH BETWEEN
MUSCLE STIMULATION AND CONTRACTION IS
CALLED?

A

Latent Period/ Phase

82
Q

THE WEAKEST STIMULUS THAT WILL STIMULATE
ALL THE MUSCLE CELLS OF A MUSCLE IS
CALLED_________STIMULUS

A

Maximal Stimulus

83
Q

INCREASED CONTRACTILE STRENGTH DUE TO AN. INCREASE IN THE NUMBER OF MUSCLE CELLS STIMULATED IS CALLED?

A

Multiple Motor Unit Recrutiment/ Summation

84
Q

DURING A TWITCH THE PHASE IN WHICH MUSCLE
FIBERS RELAX AND LENGTHEN IS CALLED?

A

Relaxation Phase

85
Q

__________ STIMULUS LEADS TO A NONCONTRACTILE RESPONSE

A

Subthreshold Stimulus

86
Q

Action of most superficial anterior compartment antebrachium/ forearm muscles is

A

Wrist flexion

87
Q

Action of most of muscles of the anterior upper leg compartment is

A

Knee extension

Quiz 3 (4 decks)

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