KIN 223 Exam 4 with verified detailed answers || || || || || || ||
The membranous network that wraps around myofibrils and holds relatively high concentrations
|| || || || || || || || || || || ||
of calcium is known as the
|| || || || ||
sarcoplasmic reticulum. ||
Which may occur as a result of muscle atrophy? || || || || || || || ||
All of the choices are correct
|| || || || ||
Which contraction occurs when you try (unsuccessfully) to move a wall?
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Isometric
Events of excitation contraction coupling, such as the release of calcium from intracellular stores,
|| || || || || || || || || || || || || ||
occur during the _ period of a muscle twitch.
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latent
The property of muscle tissue that allows an impulse to travel down the entire length of the cell
|| || || || || || || || || || || || || || || || || ||
membrane is ||
conductivity.
At the ends of muscles, the connective tissues merge to form a _, which attaches the muscle to
|| || || || || || || || || || || || || || || || || ||
other structures. ||
tendon.
Consider the difference between lifting a light pad of paper versus a heavy textbook. the primary
|| || || || || || || || || || || || || || || ||
way the level of force of muscle contraction is controlled is by
|| || || || || || || || || || ||
recruiting a different number of motor units. || || || || || ||
Concentric contraction and eccentric contraction are both types of what major type of muscle || || || || || || || || || || || || || ||
tension?
Istonic contraction ||
A moto unit consists of
|| || || ||
a single motor neuron and the multiple muscle fibers it controls.
|| || || || || || || || || ||
The action potential of a muscle fiber occurs
|| || || || || || ||
along the sarcolemma and down the T-tubules.
|| || || || || ||
, Muscle tone is a result of _ nervous system activity, and it acts to joint position.
|| || || || || || || || || || || || || || ||
involuntary, stabilize ||
Oxidative fibers are || ||
red and fatgue-resistant.
|| ||
Which of the following refers to a sustained muscle contraction?
|| || || || || || || || ||
Tetanus
Label the components of skeletal muscle.
|| || || || ||
left side
||
skeletal muscle ||
fascicle
right side ||
Muscle fiber ||
Myofibril
What type of contraction is represented by each of the following events?
|| || || || || || || || || || ||
Isometric Contraction ||
Isotonic Contraction ||
Isometric Contraction ||
- A weightlifter attempts to lift a barbell but cannot because it is too heavy.
|| || || || || || || || || || || || || ||
- A man holds open a door for his date.
|| || || || || || || || ||
- Tension is building but muscle length does not change.
|| || || || || || || || ||
Isotonic Contraction ||
- A sprinter leaves the starting block.
|| || || || || ||
- A mother lowers an infant into his crib.
|| || || || || || || ||
Assign each characteristic to the appropriate type of muscle fiber.
|| || || || || || || || ||
Fast Glycolytic
||
Slow Oxidative ||
Fast Glycolytic
||
- High glycogen content
|| || ||
The membranous network that wraps around myofibrils and holds relatively high concentrations
|| || || || || || || || || || || ||
of calcium is known as the
|| || || || ||
sarcoplasmic reticulum. ||
Which may occur as a result of muscle atrophy? || || || || || || || ||
All of the choices are correct
|| || || || ||
Which contraction occurs when you try (unsuccessfully) to move a wall?
|| || || || || || || || || ||
Isometric
Events of excitation contraction coupling, such as the release of calcium from intracellular stores,
|| || || || || || || || || || || || || ||
occur during the _ period of a muscle twitch.
|| || || || || || || ||
latent
The property of muscle tissue that allows an impulse to travel down the entire length of the cell
|| || || || || || || || || || || || || || || || || ||
membrane is ||
conductivity.
At the ends of muscles, the connective tissues merge to form a _, which attaches the muscle to
|| || || || || || || || || || || || || || || || || ||
other structures. ||
tendon.
Consider the difference between lifting a light pad of paper versus a heavy textbook. the primary
|| || || || || || || || || || || || || || || ||
way the level of force of muscle contraction is controlled is by
|| || || || || || || || || || ||
recruiting a different number of motor units. || || || || || ||
Concentric contraction and eccentric contraction are both types of what major type of muscle || || || || || || || || || || || || || ||
tension?
Istonic contraction ||
A moto unit consists of
|| || || ||
a single motor neuron and the multiple muscle fibers it controls.
|| || || || || || || || || ||
The action potential of a muscle fiber occurs
|| || || || || || ||
along the sarcolemma and down the T-tubules.
|| || || || || ||
, Muscle tone is a result of _ nervous system activity, and it acts to joint position.
|| || || || || || || || || || || || || || ||
involuntary, stabilize ||
Oxidative fibers are || ||
red and fatgue-resistant.
|| ||
Which of the following refers to a sustained muscle contraction?
|| || || || || || || || ||
Tetanus
Label the components of skeletal muscle.
|| || || || ||
left side
||
skeletal muscle ||
fascicle
right side ||
Muscle fiber ||
Myofibril
What type of contraction is represented by each of the following events?
|| || || || || || || || || || ||
Isometric Contraction ||
Isotonic Contraction ||
Isometric Contraction ||
- A weightlifter attempts to lift a barbell but cannot because it is too heavy.
|| || || || || || || || || || || || || ||
- A man holds open a door for his date.
|| || || || || || || || ||
- Tension is building but muscle length does not change.
|| || || || || || || || ||
Isotonic Contraction ||
- A sprinter leaves the starting block.
|| || || || || ||
- A mother lowers an infant into his crib.
|| || || || || || || ||
Assign each characteristic to the appropriate type of muscle fiber.
|| || || || || || || || ||
Fast Glycolytic
||
Slow Oxidative ||
Fast Glycolytic
||
- High glycogen content
|| || ||
