WorksheetsModule #4 Exam: Muscles
Total questions: 20
Worksheet time: 10mins
How are slow twitch fibers and fast twitch fibers different?
Slow twitch fibers contain a low amount of capillaries.
Slow twitch fibers contain a low amount of mitochondria.
Fast twitch fibers contain a high amount of myoglobin.
Fast twitch fibers contain a high amount of glycolytic enzymes.
Which of the following represents a muscle group pair in the human body?
biceps and trapezius
hamstrings and gluteus
rectus abdominis and erector spinae
quadriceps and deltoid
Which of the following correctly lists structures in a muscle from largest to smallest?
myofibrils, fascicles, actin
fascicles, myofibrils, myosin
actin, myosin, sarcomeres
sarcomeres, myofibrils, actin
What is the definition for a static contraction?
a contraction that develops a tension where the muscle length remains the same
a contraction that develops a tension where the muscle length elongates
a contraction that develops a tension where the muscle collapses
a contraction that develops a tension where the muscle length shortens
Which action demonstrates increasing the resistance of a movement by lengthening the distance between the joint and the movement?
doing a sit up with arms on the forehead after sitting up with arms behind head
rising from a wide-leg squat after rising from a closed leg squat
turning in a circle with arms against the body after turning with arms extended
lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle
How many different types of fibers do muscles have?
three
two
four
five
Which attachment is NOT a way muscles can be attached to bone?
with a fibrous tissue
with a tendon
with a nerve ending
directly to bone
When a muscle contracts in order to hold parts of the body steady and maintain a safe or stable position, it is acting as a
synergist.
agonist.
fixator.
antagonist.
Which statement best defines a motor unit?
single nerves found in each muscle
a nerve supplying a muscle originating from the spinal cord
a motor nerve and the muscle cells it stimulates
branches located in each individual muscle cell
Which type of muscle can you see and feel, and appears to have stripes when viewed under special light?
fascia
smooth
cardiac
skeletal
Which of the following factors of safety and effectiveness considers the distance of the weight or resistance from the joint?
stability
biomechanics
alignment
momentum
Which statement best describes a factor that determines the strength of a muscular connection?
the length of the neuromuscular junction from the spinal cord
the number of motor units recruited to perform a task
the type of motor neuron required to perform a task
the width of the motor nerve in relation to the proprioceptor
What are the two types of proteins found in myofibrils called?
endomysium and perimysium
smooth and striated
fascicles and sarcomeres
actin and myosin
Which of the following is an example of improving neuromuscular pathways?
lifting a heavy box
washing dishes
riding a bicycle
sitting in a chair
Which activity best reflects a muscle movement working with gravity?
lowering the body during a push up
lifting the torso during a sit up
curling the arm during a bicep curl
extending the leg during a leg extension
Which activity best displays muscles using a greater number of fast twitch fibers than slow twitch fibers?
swimming
running
cycling
weight lifting
Which statement best defines fascia?
a group of elongated muscle cells
a group of muscle fibers
a large number of individual muscle cells
a fibrous sheath that covers muscle fibers
Which statement best describes the reason for delayed onset muscle soreness?
fast twitch fibers working as slow twitch fibers
repair process due to microscopic muscle damage
muscle resting after an intense exertion
lactic acid accumulating in the muscle
The connective tissue surrounding each fascicle, as pictured in #3, is called:
perimysium
epimysium
endomysium
myofibril
