Anatomy/Physiology
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| show | The ability of skeletal muscle to shorten with force.
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| show | The capacity of skeletal muscle to respond to a stimulus.
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| what is extensibility? | show 🗑
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| show | The ability to recoil to their original resting length after they have been stretched.
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| What is the epimysium? | show 🗑
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| What is the perimysium? | show 🗑
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| show | Another connective tissue that located outside the epimysium.
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| What are fibers? | show 🗑
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| show | A threadlike structure that extends from one end of the fiber to the other end of the fiber.
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| What are actin myofilaments? | show 🗑
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| What are myosin filaments? | show 🗑
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| show | Actin and myosin myofilaments form highly ordered units.
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| show | The charge difference across the membrane.
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| What is action potential? | show 🗑
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| What are motor neurons? | show 🗑
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| What is a neuoromuscular junction, or a synapse? | show 🗑
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| show | A single motor neuron and all the skeletal muscle fibers it innervates.
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| What is a presynaptic terminal? | show 🗑
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| show | The space between the presynaptic terminal and the muscle cell.
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| What is the postsynaptic terminal? | show 🗑
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| Where are synaptic vesicles located? | show 🗑
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| What is acetylcholine? | show 🗑
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| show | When the acetylcholine is released into the synaptic cleft between the neuron and muscle cell is broken down by enzymes.
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| What is a sliding filament mechanism? | show 🗑
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| What is a muscle twitch? | show 🗑
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| What is the treshold? | show 🗑
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| What is the all or none response? | show 🗑
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| What is the lag phase? | show 🗑
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| What is the contraction phase? | show 🗑
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| show | The time during which the muscle relaxes.
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| What is tetany? | show 🗑
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| show | The increase in the number of motor units being activated.
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| show | A high-energy molecule.
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| What is anaerobic respiration? | show 🗑
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| What is aerobic respiration? | show 🗑
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| What is oxygen debt? | show 🗑
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| show | Results when ATP is used during muscle contraction faster than it can be produced in the muscle cells.
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| What is the meaning of isometric? | show 🗑
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| show | The amount of tension produced by the muscle is constant during contraction, but the length if the muscle changes.
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| What is muscle tone? | show 🗑
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| show | They contract quickly and fatigue quickly. Well adapted to performanaerobic metabolism.
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| What are slow-twitch fibers? | show 🗑
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| show | The most stationary end of the muscle.
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| show | The end of the muscle undergoing the greatest movement.
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| What is the belly? | show 🗑
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| What are synergists? | show 🗑
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| show | Muscles that work in opposition to one another.
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| What is the prime mover? | show 🗑
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| show | Heat.
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| What does the fascia do? | show 🗑
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| show | A muscle fiber.
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| show | Myofibrils.
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| show | Two.
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| Sacromeres are joined end to end to form what? | show 🗑
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| show | Muscle.
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| Each sacromere extens from one Z line to what other line? | show 🗑
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| Each Z line is an attachment site for what? | show 🗑
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| show | Banded.
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| show | An I band.
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| The A band extends the length of what? | show 🗑
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| show | The A band.
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| show | The H zone.
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| show | The M line.
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| The outside of most cell membranes is positively charged compared to the outside of the cell membrane which has what kind of a charge? | show 🗑
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| show | The muscle cell.
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| show | The muscles and branch.
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| Many motor units form what? | show 🗑
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| A neuromuscular junction if formed by what? | show 🗑
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| What diffuses across the synaptic cleft and binds to the postsynaptic terminal causing a change in the postsynaptic cell? | show 🗑
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| When an action potential reaches the nerve terminal, what happens? | show 🗑
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| What diffuses across the synaptic cleft and binds to receptor molecules in the muscle membrane? | show 🗑
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| What is the muscle cell membrane called? | show 🗑
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| show | Sodium ions into the muscle fiber.
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| What causes the muscle to contract? | show 🗑
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| show | Acetycholinesterase.
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| show | When the actin and myofilaments slide past one another causing the sacromeres to shorten.
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| show | Muscle.
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| In muscle contraction, when the H and I bands shorten, which band does not change in length? | show 🗑
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| If successive stimuli is given you get excessive what that occurs so frequently because the muscle doesn't have time to fully relax? | show 🗑
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| show | ATP
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| show | Adenosine Triphosphate.
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| show | In the mitochondria.
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| show | ATP
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| show | Adenosine Diphosphate.
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| Constant ATP production isn't neccessary for the movement of what? | show 🗑
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| show | ATP
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| During periods of inactivity as excess ATP is produced in the muscle cell, the energy contained in ATP is used to synthesize what? | show 🗑
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| During perios of activity, the energy stored in creatine phosphate can be accessed quickly and used to produce ATP, which can then be used in what? | show 🗑
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| show | Respiration Rate.
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| What provides the oxygen to payback the oxygen debt? | show 🗑
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| How many types of muscle contractions are there? | show 🗑
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| What are the two types of muscle contracitons called? | show 🗑
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| show | It's origin and insertion.
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| show | Tendons.
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| What has multiple origins or heads? | show 🗑
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| Most what have names that are descriptive? | show 🗑
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| show | Location, size, orientation of fibers, shape, origin, insertion, function, etc.
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| How many major functional characteristics are there to skeletal muscle? | show 🗑
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| What are the four major functional characteristics to skeletal muscle? | show 🗑
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| show | Between the Z band and the A band.
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| show | One Z line to the left, and one to the right, while there is one I band accompanying each on the introverted side of each Z line, with an M line in btween the pair of A bands.
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| Where is the H zone located? | show 🗑
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