WorksheetsChapter 10 Review Anatomy 10.1 - 10.6 - Muscle Muscular System
Total questions: 45
Worksheet time: 40mins
Muscle tissue, one of the four basic tissue groups, consists chiefly of cells that are highly specialized for
conduction
contraction.
peristalsis.
cushioning.
secretion.
The dense layer of connective tissue that surrounds an entire skeletal muscle is the
tendon.
epimysium.
endomysium.
perimysium.
fascicle.
Nerves and blood vessels that service a muscle fiber are located in the connective tissues of its
endomysium.
perimysium.
sarcolemma.
sarcomere.
myofibrils.
The bundle of collagen fibers at the end of a skeletal muscle that attaches the muscle to bone is called a(n)
tendon.
epimysium.
endomysium.
perimysium.
fascicle.
Interactions between actin and myosin filaments of the sarcomere are responsible for
muscle fatigue
the conduction of neural stimulation to the muscle fiber.
muscle contraction.
muscle relaxation.
the striped appearance of skeletal muscle.
In a sarcomere, the central portion of thick filaments are linked laterally by proteins of the
Z line.
M line.
H band.
A band.
I band.
The advantage of having many nuclei in a skeletal muscle fiber is the ability to
contract much more forcefully.
produce more ATP with little oxygen.
store extra DNA for metabolism.
produce large amounts of muscle proteins.
produce nutrients for muscle contraction.
The repeating unit of a skeletal muscle fiber is the
sarcolemma.
sarcomere.
sarcoplasmic reticulum.
myofibril.
myofilament.
The plasma membrane of a skeletal muscle fiber is called the
sarcolemma.
sarcomere.
sarcosome.
sarcoplasmic reticulum.
sarcoplasm.
The region of the sarcomere containing the thick filaments is the
Z line.
M line.
H band.
A band.
I band.
The region of the sarcomere that always contains thin filaments is the
Z line.
M line.
H band.
A band.
I band.
When a skeletal muscle fiber contracts, the
H bands and I bands get larger.
zones of overlap get larger.
Z lines move further apart.
width of the A band increases.
All of the answers are correct.
Active sites on the actin become available for binding after
actin binds to troponin.
troponin binds to tropomyosin.
calcium binds to troponin.
calcium binds to tropomyosin.
myosin binds to troponin.
The structural theory that explains how a muscle fiber contracts is called the ________ theory.
sliding filament
excitation-contraction coupling
neuromuscular
muscle contraction
action-myosin interaction
Each skeletal muscle fiber is controlled by a motor neuron at a single
synaptic knob.
sarcomere.
neuromuscular junction.
synaptic cleft.
transverse tubule.
The narrow space between the synaptic terminal and the muscle fiber is the
synaptic knob.
sarcomere.
neuromuscular junction.
synaptic cleft.
transverse tubule.
After death, muscle fibers run out of ATP and calcium begins to leak from the sarcoplasmic reticulum into the sarcoplasm. This results in a condition known as
tetany.
treppe.
depolarization.
rigor mortis.
oxygen debt.
Triggering of the muscle action potential occurs after
acetylcholine binds to chemically-gated channels in the motor end plate.
acetylcholinesterase is released from synaptic vesicles into the synaptic cleft.
calcium ion binds to channels on the motor end plate.
the action potential jumps across the neuromuscular junction.
Any of these can produce an action potential in the muscle cell.
How would the loss of acetylcholinesterase from the motor end plate affect skeletal muscle?
It would make the muscles less excitable.
It would produce muscle weakness.
It would cause muscles to stay contracted.
It would cause muscles to stay relaxed.
It would have little effect on skeletal muscles.
The rapid rise and fall in force produced by a muscle fiber after a single action potential is a(n)
tetanus.
unfused tetanus.
twitch.
motor end plate potential.
muscle action potential.
The type of contraction in which the muscle fibers do not shorten is called
tetany.
treppe.
concentric.
isotonic.
isometric.
Given the following events:
- sarcoplasmic reticulum releases calcium ions
- sarcoplasmic reticulum takes up calcium ions
- calcium ions bind to troponin molecules within actin myofilaments
- action potentials move down the T tubule
- cross bridges form and muscle contraction occurs
Choose the arrangement that lists the events in the order they occur following a single stimulus of a skeletal muscle.
1,4,3,5
2,4,3,5
4,1,3,5
5,4,3,2
Which of the following muscles would be especially well developed in a ballerina?
pectoralis major
rectus abdominis
gastrocnemius
erector spinae
Which of the following would be well developed in a football player whose specialty is kicking field goals?
hamstrings
quadriceps femoris
gluteus maximus
gastrocnemius
There are over how many muscles in the body?
800
300
600
1000
Smooth muscle is located where?
heart
bones
toes
internal organs
Smooth muscle is voluntary
true
false
The nerve releases a chemical called a
neurotransmitter
neuron
myofibril
cell
Tendons attach muscle to bone
false
true
contraction begins when:
What muscle is this?
