Biology · General Awareness
Muscle Biology
798 Questions
Muscle biology covers the structures, functions, and contraction mechanisms of skeletal, cardiac, and smooth muscles. Test questions target filaments, stimuli, and specific muscle roles. A clear understanding helps secure marks in biology sections.
Skeletal muscle controlCardiac muscle propertiesMuscle contraction mechanismActin and myosin filamentsMuscle functions
Muscle Biology Questions
Match the following:
| |
|
| a. Voluntary muscles |
1. They are the muscles which contract without conscious control and are found in walls of the internal organs. |
| b. Involuntary muscles |
2. They are a type of muscle tissues that are found only in the heart. |
| c. Cardiac muscles |
3. They are the muscles that are under the control of the will and are generally attached to the skeleton. |
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a - 3, b - 1, c - 2
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a - 3, b - 2, c - 1
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a - 1, b - 2, c - 3
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a - 1, b - 3, c - 2
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a - 2, b - 1, c - 3
A
Correct answer
Explanation
This is the correct option.
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muscle
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connective
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nervous
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epithelial
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All of the above
A
Correct answer
Explanation
Muscle tissue consists of elongated cells called muscle fibres which have the ability to contract and relax. Muscle tissues are responsible for the movement in our body.
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Smooth muscles
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Epithelial muscles
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Cardiac muscles
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skeletal muscles
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All of the above
C
Correct answer
Explanation
Cardiac muscles are found only in the heart. These muscles show rapid rhythmical contraction and relaxation, long refractory period and do not show fatigue.
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Epithelial tissue
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Connective tissue
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Muscular tissue
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Nervous tissue
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Cardiac Muscle
A
Correct answer
Explanation
Epithelial tissue forms the protective covering of the animal body. It gets modified to perform various functions such as:
- Protection: It acts as a barrier between the outer world (or inner spaces) and our bodies.
- Absorption and secretion: When absorption and secretion occurs, the epithelial tissue facilitates movement across the epithelial barrier.
- Excretion: Epithelial tissue even lines the excretory lumina, like the tracts from the kidneys to the urethra.
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Deltoid
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Biceps
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Depressor mendibularis
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Sphincter
C
Correct answer
Explanation
Depressor mendibularis works antagonistically to masseter.
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Flexors-Extensors
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Abductors-Adductors
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Elevator-Depressor
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Constrictor-Dilator
B
Correct answer
Explanation
Abductor and adductor muscles bring a body part or bone towards or away from the median line.
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Insertion
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Origin
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Belly
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Extensor
C
Correct answer
Explanation
Belly is the thick part of muscle between the two ends of muscle.
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CO2
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lactic acid
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O2
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acetic acid
B
Correct answer
Explanation
Accumulation of lactic acid results in white muscle fibers getting fatigued very fast.
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Fatigue
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Tetanic contraction
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Concentric contraction
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Rigor mortis
B
Correct answer
Explanation
The sustained contraction of muscle due to the fusion of many twitches following each other in rapid succession is called tetanic contraction.
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Isotonic contraction
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Isometric contraction
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Isovelocity contraction
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Eccentric contraction
B
Correct answer
Explanation
In isometric contraction, muscle remains the same length and no movement results.
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actin
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myosin
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troponin
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myoglobin
C
Correct answer
Explanation
Troponin is a muscle protein.
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formation of muscles
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contraction of skeletal muscles
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respiration
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locomotion in snakes
B
Correct answer
Explanation
Sliding filament theory explains the mechanism of contraction of skeletal muscles.
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Epinephrine
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Acetylcholine
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Dopamine
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Nor-epinephrine
B
Correct answer
Explanation
Acetylcholine released from the vesicles at the neuromuscular junction stimulates a muscle for contraction.
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tetany
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rigor mortis
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summation
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fatigue
B
Correct answer
Explanation
Rigor mortis refers to temporary rigidity of muscles after death.
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haemoglobin
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myoglobin
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troponin
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actin
B
Correct answer
Explanation
Myoglobin is a haem protein.