What side of heart pumps blood to the lungs?
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The right side of our heart (left on paper) pumps blood to our lungs
H-zone:
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the H-zone is the area in the center of the sarcomere where only myosin is
present
atrium:
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delivers blood to the ventricles
Z-line:
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The z-line is in the middle of the I-band and is thin, dark, and goes
vertically through the center of the I-band
What muscle fiber has a low aerobic energy supply, rapid force development,
generally inefficient and fatigable?
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Type 2 muscle fiber
Explain Type IIa muscle fibers and how its a little different from type IIx?
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Type IIa fibers have a higher capacity for aerobic mechanisms and more
capillaries than IIx fibers
What are the left and right bundle branches?
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the left and right bundle branches divide into Purkinje fibers; Left and Right
bundle branches are large and transmit impulses at a high rate
What are the 3 key characteristics of myosin?
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a globular head, hinge point, and fibrous tail
- helps with contraction of muscle
Motor recruitment frequency?
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frequency is how many signals or stimuli are being received and causing
the motor unit to be stimulated
- For example: if motor unit is activated once then it will have less force
production than twitch summation: which will cause much more force
development
-depends on activity
motor neurons have multiple __________ on its axon allowing it to _______ many muscle
fibers however the muscle fibers only have one __________________ where the motor neuron
or nerve cell can attach
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, 1. terminal branches
2. innervate
3. neuromuscular junction
Describe synovial joints
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allow considerable amounts of movement; are low friction and have large
range of motion; sport and exercise movements usually happen about
these joints
What are the types of fast twitch muscle fibers?
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Type IIa and Type IIx
Which of the following substances acts at the neurotransmuscular junction to excite
the muscle fibers of a motor unit?
A) ACh
B) ATP
C) CP
D) serotonin
Give this one a try later!
Give this one a try later!
The right side of our heart (left on paper) pumps blood to our lungs
H-zone:
Give this one a try later!
the H-zone is the area in the center of the sarcomere where only myosin is
present
atrium:
,Give this one a try later!
delivers blood to the ventricles
Z-line:
Give this one a try later!
The z-line is in the middle of the I-band and is thin, dark, and goes
vertically through the center of the I-band
What muscle fiber has a low aerobic energy supply, rapid force development,
generally inefficient and fatigable?
Give this one a try later!
Type 2 muscle fiber
Explain Type IIa muscle fibers and how its a little different from type IIx?
Give this one a try later!
Type IIa fibers have a higher capacity for aerobic mechanisms and more
capillaries than IIx fibers
What are the left and right bundle branches?
,Give this one a try later!
the left and right bundle branches divide into Purkinje fibers; Left and Right
bundle branches are large and transmit impulses at a high rate
What are the 3 key characteristics of myosin?
Give this one a try later!
a globular head, hinge point, and fibrous tail
- helps with contraction of muscle
Motor recruitment frequency?
Give this one a try later!
frequency is how many signals or stimuli are being received and causing
the motor unit to be stimulated
- For example: if motor unit is activated once then it will have less force
production than twitch summation: which will cause much more force
development
-depends on activity
motor neurons have multiple __________ on its axon allowing it to _______ many muscle
fibers however the muscle fibers only have one __________________ where the motor neuron
or nerve cell can attach
Give this one a try later!
, 1. terminal branches
2. innervate
3. neuromuscular junction
Describe synovial joints
Give this one a try later!
allow considerable amounts of movement; are low friction and have large
range of motion; sport and exercise movements usually happen about
these joints
What are the types of fast twitch muscle fibers?
Give this one a try later!
Type IIa and Type IIx
Which of the following substances acts at the neurotransmuscular junction to excite
the muscle fibers of a motor unit?
A) ACh
B) ATP
C) CP
D) serotonin
Give this one a try later!
