Mechanism of Muscle Contraction
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BIOXI20: LOCOMOTION AND MOVEMENT

339991 Mark the feature which is not associated with white muscle fibres?

1 Lighter in colour
2 These muscles have a fast rate of contraction but for a short period
3 Less sarcoplasmic reticulum compared to red muscle fibres
4 They depend mainly on glycolysis for energy production and soon get fatigued
BIOXI20: LOCOMOTION AND MOVEMENT

339992 Motor unit is a

1 Neuron only
2 Muscle cell only
3 Motor neuron with muscle fibre
4 Muscle fascicle
BIOXI20: LOCOMOTION AND MOVEMENT

339993 Action potential in the sarcolemma of muscles is generated by

1 Methylcholine- a neurotransmitter
2 Acetylcholine-a neurotransmitter
3 Troponin- a neurotransmitter
4 Acetylcholine-a neuroinhibitor
BIOXI20: LOCOMOTION AND MOVEMENT

339994 Which of the following about the mechanism of muscle contraction is correct?
i. Muscle contraction is initiated by a signal sent by CNS via a sensory neuron
ii. During muscle contraction, isotropic band gets elongated
iii. Repeated activation of the muscles can lead to lactic acid accumulation
iv. Acetylcholine is released when the neural signal reaches the motor end plate

1 ii and iv
2 i and ii
3 iii and iv
4 i and iv
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BIOXI20: LOCOMOTION AND MOVEMENT

339991 Mark the feature which is not associated with white muscle fibres?

1 Lighter in colour
2 These muscles have a fast rate of contraction but for a short period
3 Less sarcoplasmic reticulum compared to red muscle fibres
4 They depend mainly on glycolysis for energy production and soon get fatigued
BIOXI20: LOCOMOTION AND MOVEMENT

339992 Motor unit is a

1 Neuron only
2 Muscle cell only
3 Motor neuron with muscle fibre
4 Muscle fascicle
BIOXI20: LOCOMOTION AND MOVEMENT

339993 Action potential in the sarcolemma of muscles is generated by

1 Methylcholine- a neurotransmitter
2 Acetylcholine-a neurotransmitter
3 Troponin- a neurotransmitter
4 Acetylcholine-a neuroinhibitor
BIOXI20: LOCOMOTION AND MOVEMENT

339994 Which of the following about the mechanism of muscle contraction is correct?
i. Muscle contraction is initiated by a signal sent by CNS via a sensory neuron
ii. During muscle contraction, isotropic band gets elongated
iii. Repeated activation of the muscles can lead to lactic acid accumulation
iv. Acetylcholine is released when the neural signal reaches the motor end plate

1 ii and iv
2 i and ii
3 iii and iv
4 i and iv
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BIOXI20: LOCOMOTION AND MOVEMENT

339991 Mark the feature which is not associated with white muscle fibres?

1 Lighter in colour
2 These muscles have a fast rate of contraction but for a short period
3 Less sarcoplasmic reticulum compared to red muscle fibres
4 They depend mainly on glycolysis for energy production and soon get fatigued
BIOXI20: LOCOMOTION AND MOVEMENT

339992 Motor unit is a

1 Neuron only
2 Muscle cell only
3 Motor neuron with muscle fibre
4 Muscle fascicle
BIOXI20: LOCOMOTION AND MOVEMENT

339993 Action potential in the sarcolemma of muscles is generated by

1 Methylcholine- a neurotransmitter
2 Acetylcholine-a neurotransmitter
3 Troponin- a neurotransmitter
4 Acetylcholine-a neuroinhibitor
BIOXI20: LOCOMOTION AND MOVEMENT

339994 Which of the following about the mechanism of muscle contraction is correct?
i. Muscle contraction is initiated by a signal sent by CNS via a sensory neuron
ii. During muscle contraction, isotropic band gets elongated
iii. Repeated activation of the muscles can lead to lactic acid accumulation
iv. Acetylcholine is released when the neural signal reaches the motor end plate

1 ii and iv
2 i and ii
3 iii and iv
4 i and iv
For More Updates join with Us
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BIOXI20: LOCOMOTION AND MOVEMENT

339991 Mark the feature which is not associated with white muscle fibres?

1 Lighter in colour
2 These muscles have a fast rate of contraction but for a short period
3 Less sarcoplasmic reticulum compared to red muscle fibres
4 They depend mainly on glycolysis for energy production and soon get fatigued
BIOXI20: LOCOMOTION AND MOVEMENT

339992 Motor unit is a

1 Neuron only
2 Muscle cell only
3 Motor neuron with muscle fibre
4 Muscle fascicle
BIOXI20: LOCOMOTION AND MOVEMENT

339993 Action potential in the sarcolemma of muscles is generated by

1 Methylcholine- a neurotransmitter
2 Acetylcholine-a neurotransmitter
3 Troponin- a neurotransmitter
4 Acetylcholine-a neuroinhibitor
BIOXI20: LOCOMOTION AND MOVEMENT

339994 Which of the following about the mechanism of muscle contraction is correct?
i. Muscle contraction is initiated by a signal sent by CNS via a sensory neuron
ii. During muscle contraction, isotropic band gets elongated
iii. Repeated activation of the muscles can lead to lactic acid accumulation
iv. Acetylcholine is released when the neural signal reaches the motor end plate

1 ii and iv
2 i and ii
3 iii and iv
4 i and iv