Types of muscle contraction

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Types of muscle contraction

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Carey, Amanda

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Types of muscle contraction


Froggy Jumps Types of muscle contractionVersión en línea Types of muscle contraction por Carey, Amanda 1 Hypertrophy is a Increasing the size of the muscle . Specifically, the number of sarcomeres and myofibrils. b Descreasing the size of the muscle . Specifically, the number of sarcomeres and myofibrils. c When a stimulus is strong enough to cause first observable contraction 2 A subthreshold Stimulus is one that a is not strong enough to cause any observable contractions. b is strong enough to cause the first observable contraction. c is so strong, as to have the maximum contractile strength. 3 A threshold Stimulus is one that a is not strong enough to cause any observable contractions. b is strong enough to cause the first observable contraction. c is so strong, as to have the maximum contractile strength. 4 A maximum threshold Stimulus is one that a is not strong enough to cause any observable contractions. b is strong enough to cause the first observable contraction. c is so strong, as to have the maximum contractile strength. 5 The ideal lenth- tension range of a sacromere for maxomim tension is a 80-120% overlap b Below 80% overlap c More than 120% overlap 6 Isotonic Contractions have a Same tension, but muscle length changes b Same length, but muscle tension changes c Muscle length and tension both remain constant 7 Isometric Contractions have a Same tension, but muscle length changes b Same length, but muscle tension changes c Muscle length and tension both remain constant 8 Which type of contraction moves a load a Isotonic b Isometric c Both Isometric and Isotonic 9 Concentric contraction is when a a Muscle contracts to move a load b Muscle relaxes and muscle lentgens c The muscle does not change length 10 Exxentric contraction is when a a Muscle contracts to move a load b Muscle relaxes and muscle lentgens c The muscle does not change length 11 The latent period of a muscle twitch is when a ACh binds to the receptor until Calcium is released from the SR b Calcium binds troponin. Tropomyosin uncovers the myosin binding sites. Cross Bridge Cycle c Period after the cross bridge stopped. Calcium is pumped back into the SR. 12 The relaxation period of a muscle twitch is when a ACh binds to the receptor until Calcium is released from the SR b Calcium binds troponin. Tropomyosin uncovers the myosin binding sites. Cross Bridge Cycle c Period after the cross bridge stopped. Calcium is pumped back into the SR. 13 The contraction period of a muscle twitch is when a ACh binds to the receptor until Calcium is released from the SR b Calcium binds troponin. Tropomyosin uncovers the myosin binding sites. Cross Bridge Cycle c Period after the cross bridge stopped. Calcium is pumped back into the SR. 14 Recruitment is when a Small motor units are used, and as more tension is needed, larger units are added b Large motor units are used, and as more tension is needed, smaller units are added c all the motor units are used, and the muscle must call on motor units from the next muscle 15 Recruitment occurs when: a A muscle fiber shortens b More motor units are activated c Calcium is pumped back into the SR 16 Recruitment increases muscle tension by increasing the: a Frequency of ATP production b Number of motor neurons firing c Size of the sarcomere 17 During an isotonic contraction: a Muscle length changes b Muscle length stays the same c Tension decreases to zero 18 A concentric contraction occurs when the muscle: a Lengthens while maintaining tension b Shortens to move a load c Does not move a load 19 An eccentric contraction occurs when the muscle: a Shortens rapidly b Lengthens in a controlled manner c Does not change length 20 During an isometric contraction: a The muscle changes length b The joint angle changes c Tension is produced without movement 21 Holding a very heavy weight without moving it is an example of: a Concentric contraction b Isometric contraction c Eccentric contraction 22 Wave summation occurs when: a One action potential produces one twitch b Successive stimuli increase calcium release c The muscle fully relaxes between contractions 23 Increasing stimulus frequency causes muscle tension to: a Decrease b Remain constant c Increase 24 Incomplete tetanus produces approximately: a The same tension as one twitch b 3–4 times greater tension than a single twitch c Zero tension 25 The reason tension increases during wave summation is because: a More calcium remains available in the sarcoplasm b ATP is depleted c Actin shortens 26 Slow oxidative (SO) fibers primarily use: a Anaerobic glycolysis b Aerobic respiration c Creatine phosphate only 27 Fast glycolytic (FG) fibers are characterized by: a High myoglobin content b Large diameter and fatigue quickly c Slow ATPase activity 28 Fast oxidative (FO) fibers: a Contract slowly and resist fatigue b Contract quickly and can use aerobic metabolism c Have no mitochondria 29 Which fiber type is best suited for marathon running? a Slow oxidative b Fast glycolytic c Fast glycolytic-oxidative only 30 Which fiber type is primarily used in sprinting and weightlifting? a Slow oxidative b Fast oxidative c Fast glycolytic

Types of muscle contraction

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Types of muscle contractionVersión en línea

por Carey, Amanda

Hypertrophy is

A subthreshold Stimulus is one that

A threshold Stimulus is one that

A maximum threshold Stimulus is one that

The ideal lenth- tension range of a sacromere for maxomim tension is

Isotonic Contractions have

Isometric Contractions have

Which type of contraction moves a load

Concentric contraction is when a

Exxentric contraction is when a

The latent period of a muscle twitch is when

The relaxation period of a muscle twitch is when

The contraction period of a muscle twitch is when

Recruitment is when

Recruitment occurs when:

Recruitment increases muscle tension by increasing the:

During an isotonic contraction:

A concentric contraction occurs when the muscle:

An eccentric contraction occurs when the muscle:

During an isometric contraction:

Holding a very heavy weight without moving it is an example of:

Wave summation occurs when:

Increasing stimulus frequency causes muscle tension to:

Incomplete tetanus produces approximately:

The reason tension increases during wave summation is because:

Slow oxidative (SO) fibers primarily use:

Fast glycolytic (FG) fibers are characterized by:

Fast oxidative (FO) fibers:

Which fiber type is best suited for marathon running?

Which fiber type is primarily used in sprinting and weightlifting?