Physiology 001 - Introduction to Human Physiology » Spring 2022 » Lecture Test 3 Muscle Physiology.
Need help with your exam preparation?
Get Answers to this exam for $6 USD.
Get Answers to all exams in [ Physiology 001 - Introduction to Human Physiology ] course for $25 USD.
Existing Quiz Clients Login here
Question #1
Ability to propagate impulses (signals) over membrane and stimulates the muscle cells to contract.
A.
extensibility
B.
excitability
C.
contractibility
D.
elasticity
Question #2
Ability to shorten and generate pulling forces.
A.
excitability
B.
extensibility
C.
elasticity
D.
contractibility
Question #3
Ability to stretched back to its original length without damaging tissue.
A.
excitability
B.
elasticity
C.
contractibility
D.
extensibility
Question #4
Ability to return to original shape (recoil) after being stretched.
A.
contractibility
B.
elasticity
C.
extensibility
D.
excitability
Question #5
A fine sheath of connective tissue wrapping each muscle cell.
A.
epimysium
B.
deep fascia
C.
endomysium
D.
perimysium
Question #6
Connective tissue that surrounds each fascicle (group of muscle fibers).
A.
endomysium
B.
perimysium
C.
deep fascia
D.
epimysium
Question #7
Each skeletal muscle is supplied by:
A.
A nerve, artery, and two or more veins
B.
Veins, Schwann cells, axons, and synaptic end bulbs
C.
peripheral neuron, muscle cell, and sarcoplasm
D.
An afferent neuron
Question #8
The embryonic origin of muscle tissue is from
A.
ectoderm
B.
endoderm
C.
mesoderm
D.
epidermis
Question #9
During the embryonic development, each skeletal muscle arises from the fusion of a hundred or more mesodermal cells called:
A.
mesoblast
B.
myoblast
C.
satellite cells
D.
endoblast
Question #10
A stem cell that is found in skeletal muscle fibers and promotes their growth, repair, and regeneration.
A.
satellite cells
B.
mesoblast
C.
myoblast
D.
endoblast
Question #11
The only muscle cells that branch are ____________ muscle cells.
A.
red
B.
smooth
C.
cardiac
D.
skeletal
Question #12
Type of muscle in which several nuclei are peripherally arranged.
A.
skeletal
B.
red
C.
smooth
D.
cardiac
Question #13
Involuntary striated muscle.
A.
smooth
B.
red
C.
skeletal
D.
cardiac
Question #14
Involuntary and non-striated in appearance muscle .
A.
red
B.
skeletal
C.
cardiac
D.
smooth
Question #15
Autorhythmic because of built of pacemakers.
A.
smooth
B.
skeletal
C.
red
D.
cardiac
Question #16
Located in walls of hollow organs such as blood vessels, esophagus, and intestines.
A.
cardiac
B.
red
C.
smooth
D.
skeletal
Question #17
What is the function of the protein Titin?
A.
prevents a muscle from being overstretched.
B.
Connects myosin to actin
C.
forms the Z disk to which actin attaches
D.
limits the degree to which a muscle may contract.
Question #18
The sarcoplasmic reticulum stores ________________.
A.
myosin
B.
ATPase
C.
calcium
D.
sodium
Question #19
Of the various types of skeletal muscle fibers, the type with the most mitochondria, red in color due to abundant myoglobin, obtain energy from aerobic metabolic pathways, fibers are small in diameter and found in postural muscles.
A.
fast oxidative fibers (type IIa)
B.
slow oxidative fibers
C.
fast glycolytic fibers (type IIx)
D.
slow glycolytic fibers
Question #20
Of the various types of skeletal muscle fibers, the type that produces the most power, depend on anaerobic pathways, contract rapidly and tire quickly, fibers used in heavy weight training. Contain little myoglobin and few mitochondria.
A.
slow oxidative fibers
B.
slow glycolytic fibers
C.
fast oxidative fibers (type IIa)
D.
fast glycolytic fibers (type IIx)
Question #21
Fibers abundant in the muscle of the lower limbs, which must move the body for long periods during locomotion, fibers with an intermediate diameter, they have high myoglobin content and rich supply of capillaries. Fibers with aerobic and anaerobic metabolic pathways.
A.
fast oxidative fibers (type IIa)
B.
fast glycolytic fibers (type IIx)
C.
slow glycolytic fibers
D.
slow oxidative fibers
Question #22
Progressive skeletal muscle disorder in which the muscles are weak and slow to relax after contraction.
A.
Fibromyalgia
B.
Myotonic dystrophy
C.
Myofascial pain syndrome
D.
Duchenne muscular dystrophy
Question #23
Skeletal muscle disorder in which pain is caused by tightened bands of muscle fibers. It refers to pain and inflammation in the body’s soft tissues.
A.
Myofascial pain syndrome
B.
Fibromyalgia
C.
Myotonic dystrophy
D.
Duchenne muscular dystrophy
Question #24
Abnormal contraction characterized by involuntary contraction of a single muscle.
A.
Tic
B.
Spasm
C.
Fasciculation
D.
Tremor
Question #25
Abnormal contraction characterized by rhythmic, involuntary contraction of opposing muscle groups.
A.
Spasm
B.
Fasciculation
C.
Tremor
D.
Tic
Question #26
Abnormal contraction characterized by involuntary twitching of muscle normally under voluntary control – eyelid or fascial muscles.
A.
Tremor
B.
Spasm
C.
Tic
D.
Fasciculation
Question #27
In the lever systems __________________ act as fulcrum.
A.
bones
B.
joints
C.
load
D.
muscle contraction
Question #28
In the lever systems _________________ consist of overlying tissue, bone, and anything lifted.
A.
joints
B.
load
C.
muscle contraction
D.
bones
Question #29
In the lever system _______________ act as levers.
A.
bones
B.
joints
C.
muscle contraction
D.
load
Question #30
In the lever systems _______________ provides effort.
A.
muscle contraction
B.
joints
C.
bones
D.
load
Question #31
A lever operates as a _____________when a larger effort moves a lighter load.
A.
mechanical disadvantage
B.
negative mechanical effort
C.
mechanical advantage
D.
positive mechanical effort
Question #32
A lever operates as a ____________ when a smaller effort can move a heavy load.
A.
Mechanical disadvantage
B.
Mechanical advantage
C.
Positive mechanical effort
D.
Negative mechanical effort
Question #33
The arrangement of the elements is fulcrum- load- effort, as exemplified by a wheelbarrow or standing on tiptoe.
A.
Fourth – class lever
B.
Second – class lever
C.
Third – class lever
D.
First - class lever
Question #34
The arrangement of the elements is load- effort- fulcrum. Lifting or holding something with tweezers or flexing the forearm by the biceps brachii muscle.
A.
Third – class lever
B.
Fourth – class lever
C.
First - class lever
D.
Second – class lever
Question #35
The arrangement of the elements is load- fulcrum – effort. Seesaws, scissors, and lifting your head of your chest are some examples.
A.
First - class lever
B.
Third – class lever
C.
Second – class lever
D.
Fourth – class lever
Question #36
When you stand on your tiptoes, the lateral and medial bulges seen in your calf are the _____________________.
A.
calcaneal tendon
B.
heads of gastrocnemius
C.
soleus
D.
hamstring
Question #37
Fascicle arrangement in which the origin of the muscle is broad, an example is the pectoralis major.
A.
fusiform
B.
circular
C.
convergent
D.
multipennate
Question #38
Fascicles are arranged in concentric rings, and example is the orbicularis oculi muscle.
A.
multipennate
B.
convergent
C.
circular
D.
fusiform
Question #39
Fascicle arrangement in which the fascicles insert into one large tendon from all sides, an example is the deltoid muscle.
A.
fusiform
B.
convergent
C.
circular
D.
multipennate
Question #40
Fascicles run parallel with an expanded central belly, like the biceps brachii muscle.
A.
fusiform
B.
circular
C.
multipennate
D.
convergent
Question #41
Fascicles inserted into the tendon from both sides, an example is the rectus femoris muscle.
A.
convergent
B.
fusiform
C.
bipennate
D.
multipennate
Question #42
Which is not criterion for naming a muscle?
A.
color
B.
action
C.
shape
D.
location
Question #43
The deltoid muscle is named according to:
A.
Relative size
B.
Number of origins
C.
Shape
D.
Location of attachment
Question #44
The gluteus maximus and gluteus minimus muscles are named according to:
A.
Shape
B.
Number of origins
C.
Location of attachment
D.
Relative size
Question #45
Muscles that reverses, or opposes, the action of another muscle, an example is the triceps brachii.
A.
fixator
B.
prime
C.
antagonist
D.
synergist
Question #46
A.
prime mover
B.
antagonist
C.
fixator
D.
synergist
Question #47
Muscles that assist the agonist muscle by reducing undesired action or unnecessary movement, such as the wrist extensor muscles.
A.
fixator
B.
synergist
C.
antagonist
D.
Prime mover
Question #48
This type of muscle contains intercalated discs.
A.
skeletal muscle
B.
smooth muscle
C.
cardiac muscle
D.
Skeletal and smooth muscles
Question #49
Of the three classes of muscle cells (skeletal, cardiac and smooth muscle tissue), the only one in which the nuclei lie peripherally instead of centrally is _____________________________.
A.
skeletal.
B.
visceral.
C.
cardiac.
D.
smooth.
Question #50
Motor neurons conduct nerve impulses from the PNS to the CNS?
A.
False
B.
True
Question #51
Action potentials for the stimulation of muscle contraction are generated in ________________.
A.
Spinal cord
B.
Brain, Spinal cord and Peripheral nervous system
C.
Peripheral nervous system
D.
Brain and Spinal cord
E.
Brain
Question #52
Skeletal muscle fibers are stimulated by motor neurons.
A.
False
B.
True
Question #53
Enzymes speed up the rate of chemical reactions.
A.
False
B.
True
Question #54
The head of myosin is energized only during relaxation.
A.
False
B.
True
Question #55
This type of muscle composes the largest share of muscle weight in the human body.
A.
cardiac muscle
B.
skeletal muscle
C.
smooth muscle
Question #56
During muscle contraction, what do Ca2+ ions bind to?
A.
Myosin
B.
Troponin
C.
Tropomyosin
D.
Actin
Question #57
During skeletal muscle contraction, what gets released at the power stroke?
A.
Pi (inorganic phosphate)
B.
Ca2+ ions
C.
an ADP molecule.
D.
an ATP molecule.
Question #58
What two structures meet at the neuromuscular junction?
A.
A motor neuron and the sarcolemma of the skeletal muscle cell
B.
A motor neuron and thick filaments of the skeletal muscle cell
C.
T tubule and sarcoplasmic reticulum
D.
A motor neuron and the sarcoplasmic reticulum
E.
Sarcolemma and T tubules
Question #59
What should be moved to allow attachment of actin and myosin during the cross bridge formation?
A.
Tropomyosin
B.
Calcium ions
C.
Sarcomere
D.
Troponin
Question #60
What causes the release (detachment) of actin from myosin to terminate muscle contraction?
A.
ATP molecule binding to actin
B.
All of the possibleanswers are correct
C.
ATP molecule binding to the myosin head.
D.
Ca2+ increase in the sarcomere
Question #61
What happen to Ca2+ ions in the sarcoplasm, when they are no longer needed for muscle contraction?
A.
It remains attach to troponin until the next muscle contraction cycle
B.
It is actively transporting into in the T -tubule by the enzyme ATPase.
C.
It is actively transporting back into the sarcoplasmic reticulum by Ca2+ ATPase enzyme
D.
It remains in the sarcoplasm until the next muscle contraction cycle
Need help with your exam preparation?
Get Answers to this exam for $6 USD.
Get Answers to all exams in [ Physiology 001 - Introduction to Human Physiology ] course for $25 USD.
Existing Quiz Clients Login here