3927140
Descripción
Test por Ashley Garrett, actualizado hace más de 1 año
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Creado por Ashley Garrett
hace alrededor de 10 años
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Pregunta 1
Pregunta
A large broad sheet of connective tissue, such as on the abdomen, is called a/an _____ .
Respuesta
-
aponeurosis
-
epimysium
-
perimysium
-
endomysium
Pregunta 2
Pregunta
The membrane that is the closest to the individual muscle fiber is the _____.
Respuesta
-
aponeurosis
-
epimysium
-
perimysium
-
endomysium
Pregunta 3
Pregunta
A group of skeletal muscle fibers is called a/an _____.
Respuesta
-
perimysium
-
fascicle
-
epimysium
-
tendon
Pregunta 4
Pregunta
The structure that connects muscles to bones is the _____.
Respuesta
-
aponeurosis
-
fascicle
-
tendon
-
ligament
Pregunta 5
Pregunta
The main force of contraction occurs when actin forms a chemical complex with _____ .
Respuesta
-
troponin
-
myosin
-
tropomyosin
-
acetylcholine
Pregunta 6
Pregunta
When a muscle is at rest, which of the following is not associated chemically with the others?
Respuesta
-
actin
-
myosin
-
troponin
-
tropomyosin
Pregunta 7
Pregunta
During the contraction of a sarcomere, calcium ions bind with the protein _____.
Respuesta
-
actin
-
myosin
-
troponin
-
tropomyosin
Pregunta 8
Pregunta
The main neurotransmitter involved in skeletal muscle contraction is _____.
Respuesta
-
adrenalin
-
noradrenalin
-
acetylcholine
-
dopamine
Pregunta 9
Pregunta
Which molecule directly supplies energy to myosin to allow the filaments to contract?
Respuesta
-
adenosine diphosphate
-
ATP
-
creatone phosphate
-
creatinine
Pregunta 10
Pregunta
The presence of _____ allow cardiac muscle fibers to transmit impulses faster among themselves.
Respuesta
-
cell membranes
-
nerve fibers
-
intercalated disks
-
peristalsis
Pregunta 11
Pregunta
The muscle is called the _____ when it is causing the movement that is being described.
Respuesta
-
antagonist
-
synergist
-
prime mover
-
flexor
Pregunta 12
Pregunta
Muscles that act together to cause the same movements are called _____.
Respuesta
-
synergists
-
antagonists
-
prime movers
-
agonists
Pregunta 13
Pregunta
The sternocleidomastoid muscle was named because of its _____.
Respuesta
-
shape
-
size
-
location
-
points of attachment
Pregunta 14
Pregunta
The _____ muscle forms a broad flat sheet on top of the head.
Respuesta
-
temporalis
-
buccinator
-
epicranius
-
frontalis
Pregunta 15
Pregunta
Which muscle lines most of the inner cheek wall?
Respuesta
-
orbicularis oris
-
buccinator
-
orbicularis oculi
-
masseter
Pregunta 16
Pregunta
The _____ is a common intramuscular injection site, which flexes the shoulder or extends the arm.
Respuesta
-
pectorals major
-
deltoid
-
trapezius
-
coracobrachialis
Pregunta 17
Pregunta
Which triangular thoracic muscle causes the arms to move towards the midline?
Respuesta
-
subscapularis
-
teres minor
-
pectoralis major
-
latissimus dorsi
Pregunta 18
Pregunta
A synergist with the biceps brachii is the _____.
Respuesta
-
triceps brachii
-
brachialis
-
deltoid
-
supinator
Pregunta 19
Pregunta
The pronator teres inserts on the _____.
Respuesta
-
humerus
-
scapula
-
ulna
-
radius
Pregunta 20
Pregunta
The fibers of a muscle that are connected to the overlying skin fibers are the _____ .
Respuesta
-
subcutaneous fascia
-
deep fascia
-
subserous fascia
-
tendon
Pregunta 21
Pregunta
The muscle cells within a group such as the biceps brachii are individually called _____ .
Respuesta
-
sarcolemmas
-
fibers
-
myocyte
-
myofibrils
Pregunta 22
Pregunta
The I bands in a sarcomere are made of _____ .
Respuesta
-
myosin
-
actin and myosin
-
tropomyosin
-
actin
Pregunta 23
Pregunta
The _____ zone contains only myosin and is in the center of a sarcomere.
Respuesta
-
A
-
I
-
M
-
H
Pregunta 24
Pregunta
The cisternae are enlarged portions of the _____ .
Respuesta
-
sarcoplasmic reticulum
-
endoplasmic reticulum
-
transverse tubules
-
T-tubules
Pregunta 25
Pregunta
The gap between the muscle and a nerve is the _____.
Respuesta
-
synapse
-
motor end plate
-
myoneural junction
-
motor neuron
Pregunta 26
Pregunta
The chemical that crosses a neuromuscular gap is _____.
Respuesta
-
sodium
-
a protein
-
a neurotransmitter
-
calcium
Pregunta 27
Pregunta
The combination of a neuron and the muscle fiber it associates with is called a/an _____ .
Respuesta
-
fascicle
-
motor end plate
-
motor unit
-
myoneural junction
Pregunta 28
Pregunta
The most abundant of the muscle proteins is _____ .
Respuesta
-
actin
-
troponin
-
myosin
-
tropomyosin
Pregunta 29
Pregunta
What is the most abundant storage form of energy within a muscle fiber?
Respuesta
-
glycogen
-
ADP
-
ATP
-
creatine phosphate
Pregunta 30
Pregunta
What effect does creatine phosphokinase have on muscle activity?
Respuesta
-
it causes a fiber to relax
-
it stimulates ATP synthesis
-
catalyzes the formation of creatine phosphate
-
causes the breakdown of creatine into creatinine
Pregunta 31
Pregunta
How is excess sugar stored within muscle fibers?
Respuesta
-
in ATP
-
glycogen
-
glucose
-
creatinine
Pregunta 32
Pregunta
Which main factor allows muscle to sustain contraction even during times when the blood supply is low?
Respuesta
-
the presence of hemoglobin
-
glycogen storage
-
myoglobin
-
citric acid cycle
Pregunta 33
Pregunta
The reddish brown color of muscle is due to the presence of _____ molecules.
Respuesta
-
creatine phosphate
-
hemoglobin
-
iron
-
myoglobin
Pregunta 34
Pregunta
Which molecule is produced during exercise, resulting in the oxygen debt?
Respuesta
-
glycogen
-
lactate
-
pyruvate
-
ATP
Pregunta 35
Pregunta
About _____% of ATP energy becomes liberated as heat from muscle metabolism.
Respuesta
-
25
-
50
-
75
-
10
Pregunta 36
Pregunta
A single contraction of a muscle is called a ______.
Respuesta
-
threshold
-
recruitment
-
twitch
-
myogram
Pregunta 37
Pregunta
The minimum stimulus needed to cause a contraction is called the _____.
Respuesta
-
all-or-none law
-
threshold
-
sub-maximal stimulus
-
recruitment level
Pregunta 38
Pregunta
The period of time in which a muscle will not respond to a stimulus is called the _____.
Respuesta
-
latent period
-
refractory period
-
relaxation period
-
threshold
Pregunta 39
Pregunta
The complete contraction of a muscle, without the ability to relax, is called _____.
Respuesta
-
a sustained contraction
-
fatigue
-
tetanic contraction
-
treppe
Pregunta 40
Pregunta
The constant contraction of a percentage of fibers within a muscle is referred to as _____.
Respuesta
-
tetany
-
tonus
-
sustained contraction
-
summation
Pregunta 41
Pregunta
Contractions called _____ occur whenever the forces applied to a muscle are increased, but the muscle does not appear to be moving.
Respuesta
-
isotonic
-
isometric
-
tetanic
-
summation contractions
Pregunta 42
Pregunta
Which of the following muscles always requires nerve impulses in order to contract?
Respuesta
-
multi-unit smooth
-
skeletal
-
visceral smooth
-
cardiac
Pregunta 43
Pregunta
Which type of muscle is found in the wall of blood vessels?
Respuesta
-
skeletal
-
cardiac
-
smooth visceral
-
multi-unit smooth
Pregunta 44
Pregunta
Since smooth muscle fibers have rhythmicity and can stimulate each other, they contract in a pattern called _____.
Respuesta
-
a functional syncytium
-
peristalsis
-
tetany
-
tonus
Pregunta 45
Pregunta
The degeneration of muscle fibers caused by a lack of proper stimulation and usage is called _____.
Respuesta
-
hypertrophy
-
atrophy
-
dystrophy
-
peristalsis
Pregunta 46
Pregunta
In smooth muscle, calcium ions combine with _____ to allow the actin and myosin cross-bridges to form.
Respuesta
-
calmodulin
-
troponin
-
myosin
-
tropomyosin
Pregunta 47
Pregunta
Which muscle causes smiling and is attached to the corners of the lips?
Respuesta
-
zygomatic
-
buccinator
-
temporalis
-
orbicularis oris
Pregunta 48
Pregunta
The _____ is the broad flat muscle on the neck, which causes frowning.
Respuesta
-
sternocleidomastoid
-
platysma
-
buccinator
-
pterygoid
Pregunta 49
Pregunta
A condition called temporomandibular syndrome can be caused by contraction of the _____.
Respuesta
-
buccinator
-
masseter
-
platysma
-
frontalis
Pregunta 50
Pregunta
The antagonist of the sternocleidomastoid is the _____.
Respuesta
-
splenius capitis
-
digastric
-
trapezius
-
semispinalis capitis
Pregunta 51
Pregunta
The triangular shaped muscle on the back that rotates the shoulder is the _____
Respuesta
-
trapezius
-
rhomboid
-
deltoid
-
levator scapulae
Pregunta 52
Pregunta
The _____ muscle acts to elevate the shoulders.
Respuesta
-
rhomboideus
-
levator scapulae
-
pectoralis major
-
deltoid
Pregunta 53
Pregunta
Adduction of the scapulae in a posterior view is mainly accomplished by the _____.
Respuesta
-
trapezius
-
rhomboideus
-
serratus anterior
-
pectoralis minor
Pregunta 54
Pregunta
The _____ will move the shoulders on a forward plane.
Respuesta
-
pectoralis major
-
pectoralis minor
-
deltoid
-
serratus anterior
Pregunta 55
Pregunta
An antagonist of the teres major is the _____.
Respuesta
-
pectoralis major
-
supraspinatus
-
infraspinatus
-
subscapularis
Pregunta 56
Pregunta
The _____ is a common intramuscular injection site, which flexes the shoulder or extends the arm.
Respuesta
-
pectoralis major
-
deltoid
-
trapezius
-
coracobrachialis
Pregunta 57
Pregunta
The _____ is a common intramuscular injection site, which flexes the shoulder or extends the arm.
Respuesta
-
pectoralis major
-
deltoid
-
trapezius
-
coracobrachialis
Pregunta 58
Pregunta
Which triangular thoracic muscle causes the arms to move towards the midline?
Respuesta
-
subscapularis
-
teres minor
-
pectoralis major
-
latissimus dorsi
Pregunta 59
Pregunta
A synergist with the biceps brachii is the _____.
Respuesta
-
triceps brachii
-
brachialis
-
deltoid
-
supinator
Pregunta 60
Pregunta
The pronator teres inserts on the _____.
Respuesta
-
radius
-
ulna
-
humerus
-
scapula
Pregunta 61
Pregunta
The psoas major is the antagonist to the _____.
Respuesta
-
psoas minor
-
gluteus maximus
-
iliacus
-
pectineus
Pregunta 62
Pregunta
The _____ muscle attaches to a long band of tendon which runs down the lateral aspect of the leg.
Respuesta
-
iliacus
-
tensor fasciae latae
-
adductor longus
-
gracilis
Pregunta 63
Pregunta
The _____ muscle causes one to cross the leg by adducting the thigh and flexing the lower leg.
Respuesta
-
iliopsoas
-
sartorius
-
gracilis
-
adductor magnus
Pregunta 64
Pregunta
Which muscle runs from the anterior superior iliac spine to the medial tibial surface near the patella?
Respuesta
-
vastus medialis
-
vastus lateralis
-
semitendinosus
-
sartorius
Pregunta 65
Pregunta
The following cause dorsiflexion of the foot except which one?
Respuesta
-
extensor digitorum longus
-
soleus
-
tibialis anterior
-
peroneus tertius
Pregunta 66
Pregunta
Which of the following is attached to the calcaneus?
Respuesta
-
gastrocnemius
-
tibialis posterior
-
peroneus longus
-
peroneus tertius
Pregunta 67
Pregunta
The _____ is inserted on the base of the first metatarsal.
Respuesta
-
soleus
-
tibialis anterior
-
tibialis posterior
-
extensor digitorum longus
Pregunta 68
Pregunta
Spontaneous contraction of random groups of muscles is called _____.
Respuesta
-
syncytium
-
peristalsis
-
fibrillation
-
contracture
Pregunta 69
Pregunta
A disease which results in muscle weakness because of abnormal neuromuscular junction activity is _____.
Respuesta
-
poliomyelitis
-
myasthenia gravis
-
multiple sclerosis
-
muscular dystrophy
Pregunta 70
Pregunta
Which of the following refers to a prolonged muscular spasm?
Respuesta
-
myotonia
-
paresis
-
myalgia
-
contracture
Pregunta 71
Pregunta
The layer of connective tissue that separates the muscle tissue into small sections is called the ______________.
Respuesta
-
aponeuroses
-
epimysium
-
perimysium
-
endomysium
Pregunta 72
Pregunta
The segment of a myofibril that is called a sarcomere runs from _______________.
Respuesta
-
one Z line to the next Z line
-
one H zone to the next H zone
-
one A band to the next A band
-
one end of a skeletal muscle to the opposite end
Pregunta 73
Pregunta
The ______________ are an invagination of the muscle cell's sarcolemma.
Respuesta
-
sarcoplasmic reticula
-
transverse (T) tubules
-
cisternae
-
microtubules
Pregunta 74
Pregunta
Into what does the neuron release its neurotransmitter at the neuromuscular junction?
Respuesta
-
motor end plate
-
cytoplasm of the muscle cell
-
cisternae
-
synaptic cleft
Pregunta 75
Pregunta
A motor unit is made up of _______________.
Respuesta
-
all the muscle fibers within a given muscle
-
a motor neuron and the muscle fibers it innervates
-
all the neurons going into an individual section of the body
-
a fascicle and a nerve
Pregunta 76
Pregunta
The crossbridges involved in muscle contraction are located on the ________________.
Respuesta
-
myosin myofilaments
-
actin myofilaments
-
tropomyosin
-
dystrophin
Pregunta 77
Pregunta
Which of these statements is correct regarding skeletal muscle contraction?
Respuesta
-
All motor units act together.
-
Muscle contraction continues for long periods after nervous stimulation ceases.
-
The crossbridges bind to the actin and shorten the sarcomeres.
-
Dystrophin is not needed to strengthen the contracting muscle cell.
Pregunta 78
Pregunta
The type of muscle found in the irises of the eyes and in the blood vessels is called _______________.
Respuesta
-
visceral smooth muscle
-
multiunit smooth muscle
-
cardiac muscle
-
skeletal muscle
Pregunta 79
Pregunta
Why can cardiac muscle fibers contract for longer periods than skeletal muscle fibers?
Respuesta
-
Cardiac muscle is self-excitatory.
-
Extracellular calcium partially controls the strength (and length) of contraction.
-
Cisternae of T-tubules is more developed in cardiac muscle.
-
Cardiac muscle is uninucleate rather than multinucleate.
Pregunta 80
Pregunta
Which muscle enables you to pucker your lips for a kiss?
Respuesta
-
epicranius
-
buccinator
-
orbicularis oris
-
orbicularis oculi
Pregunta 81
Pregunta
The muscle that enables you to elevate and adduct your scapula is the ____________.
Respuesta
-
serratus anterior
-
sternocleidomastoid
-
splenius capitis
-
rhomboideus major
Pregunta 82
Pregunta
Which muscle is the strongest flexor of the elbow?
Respuesta
-
brachialis
-
biceps brachii
-
brachioradialis
-
deltoid
Pregunta 83
Pregunta
The biceps femoris is one hamstring muscle located on the back of the thigh. Which muscle is another hamstring?
Respuesta
-
adductor magnus
-
semitendinosus
-
gluteus maximus
-
quadriceps femoris
Pregunta 84
Pregunta
Muscles that are NOT used, may degenerate or undergo a process of _____.
Respuesta
-
atrophy
-
hypertrophy
-
fatigue
-
tetany
Pregunta 85
Pregunta
Muscles that act to cause similar movements are called _____.
Respuesta
-
antagonists
-
origins
-
insertions
-
synergists
Pregunta 86
Pregunta
The triangle shaped muscle which antagonizes the sternocleidomastoid is the _____.
Respuesta
-
deltoid
-
pectoralis major
-
external oblique
-
trapezius
Pregunta 87
Pregunta
The antagonist to the triceps brachii is the _____.
Respuesta
-
deltoid
-
pectoralis major
-
brachialis
-
serratus anterior
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