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WorksheetsMuscular Physiology Review
Total questions: 44
Worksheet time: 45mins
Which of these are major tasks of the muscular system? (Select all that apply)
Produce movement
Maintain posture
Stabilize joints
Generate heat
Make red blood cells
All muscle tissues have these characteristics (select 4):
Excitability
Contractility
Extensibility
Elasticity
Isometricity
Match the following characteristics to their definition.
Excitability
the ability to respond to a stimulus
Contractility
the ability to shorten when stimulated
Extensibility
the ability to lengthen or stretch
Elasticity
the ability to recoil or bounce back
Identify which of the following images is skeletal muscle tissue.
Identify which of the following images is cardiac muscle tissue.
Identify which of the following images is smooth muscle tissue.
Which of the following muscle tissues is striated? (Select all that apply)
Skeletal
Cardiac
Smooth
Which of the following muscle tissues is non-striated? (Select all that apply)
Skeletal
Cardiac
Smooth
Which of the following muscle tissues is voluntarily controlled? (Select all that apply)
Skeletal
Cardiac
Smooth
Which of the following muscle tissues is involuntarily controlled? (Select all that apply)
Skeletal
Cardiac
Smooth
Which of the following muscle tissues can contract either slowly or very quickly?
Skeletal
Cardiac
Smooth
Which of the following muscle tissues has slow and steady contractions except during short periods of activity?
Skeletal
Cardiac
Smooth
Which of the following muscle tissues has slow contractions, sustained for long periods of time?
Skeletal
Cardiac
Smooth
Place the microscopic structures of skeletal muscle in order from largest to smallest (left to right).
Muscle
Fascicle
Muscle Fiber
Myofibril
Myofilaments
Membranes allow the muscle fibers to (a) and keeps them contained to prevent bursting during contractions.
Match the following definition to the correct type of membrane.
Epimysium
Covers the whole muscle
Perimysium
Covers a fascicle
Endomysium
Covers an individual muscle fiber
______ (thin) and ______ (thick) work together to produce a muscle contraction.
actin
myosin
muscle fiber
fascicle
origin
The space between two Z-lines is the (a) .
The energy required for muscle fibers to contract comes from _______.
ATP
___are thin filaments.
troponin
tropomyosin
actin
myosin
___are thick filaments.
actin
myosin
troponin
tropomyosin
In stage 1 of the Sliding Filament Theory, what happens after the nerve impulse reaches the cell?
Which event starts the contraction cycle?
Nerve impulse reaches muscle cell
Cross-bridge forming
Which events occur during stage 2 of the Sliding Filament Theory? (Select 2)
Calcium exposes the active site on the actin for the myosin to attach
Myosin attaches to actin and a cross-bridge forms
New ATP attaches to myosin head causing the myosin head to release from the actin
Myosin head reloads for next stroke
Which events occur during stage 3 of the Sliding Filament Theory? (Select 2)
Actin is pulled toward the M-line
Myosin attaches to actin and a cross-bridge forms
New ATP attaches to myosin head causing the myosin head to release from the actin
ADP & Pi are released
Which events occur during stage 4 of the Sliding Filament Theory? (Select 2)
Actin is pulled toward the M-line
Cross-bridge detaches
New ATP attaches to myosin head causing the myosin head to release from the actin
ADP & Pi are released
Which events occur during stage 5 of the Sliding Filament Theory? (Select 2)
ATP splits into ADP & Pi
Cross-bridge detaches
Myosin head reloads for next stroke
Nerve impulse reaches muscle cell
After the muscle has been contracted, (a) attaches to the myosin and causes the cross-bridge to detach.
Each time a myosin filament engages with an actin filament, how many ATP molecules are used?
Muscles are either ________ or _______, there is no in-between.
contracted
relaxed
partially contracted
damaged
ATP is formed through ________ __________.
(a)
The process of cellular respiration depends on the presence of (a) .
How many ATP are created during Kreb's Cycle?
How many ATP are created during fermentation?
Muscles become fatigued by which of the following? (Select 4)
Intense exercise
Lack of ATP
Too much lactate
Oxygen debt
Anaerobic respiration
Match the following
The amount of lactate produced cannot prevent muscles from failing
Lactate threshold
Conversion of food into energy without oxygen
Anaerobic respiration
Muscle soreness felt days after strenuous physical activity
Delay onset muscle soreness (DOMS)
Conversion of food into energy with oxygen
Aerobic respiration
Match the following muscular system disease to its definition and cause:
a group of diseases that cause progressive weakness and loss of muscle mass.
Genetic mutations that interfere with the production of muscle proteins.
Widespread muscle pain and tenderness.
Pain and tenderness along the inner part of the shinbone.
"shin splints"
Caused by repetitive stress on the shinbone and the connective tissues.
Caused by genetics, infections, and physical/emotion events.
Match the number to the skeletal muscle structure:
1
muscle
3
fascicle
9
myosin
10
actin
Match the number to the skeletal muscle structure:
2 (membrane)
epimysium
4 (membrane)
perimysium
7
sarcomere
11
myofilaments
Match the number to the skeletal muscle structure:
5
myofibril
6
muscle fiber
8 (membrane)
endomysium
Match the following anatomical movement to its definition:
decreases the angle between two body parts
flexion
increases the angle between two body parts
extension
rotation toward the midline
internal rotation
rotation away from the midline
external rotation
movement in the superior direction
elevation
Match the following anatomical movement to its definition:
a movement away from the midline
abduction
a movement toward the midline
adduction
movement of the scapular that moves the shoulder anteriorly
protraction
movement of the scapular that moves the shoulder posteriorly
retraction
the bending of the neck or body toward the right or left side
lateral flexion
Match the following anatomical movement to its definition:
rotational movement in 3 planes where the hand faces inward and upward
supination
rotational movement in 3 planes where the hand faces downward and outward
pronation
extension at the ankle so that the foot points inferiorly
plantarflexion
flexion at the ankle so that the foot points superiorly
dorsiflexion
movement that brings the thumb and little finger together
opposition
