Biology ยท General Awareness
Muscle Biology
836 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
B
Correct answer
Explanation
This is a widespread myth. The tongue is often incorrectly called the "strongest muscle," but strength can be measured in different ways. By absolute force, the masseter (jaw muscle) is strongest - it can generate over 200 pounds of pressure on your molars. The gluteus maximus is the largest muscle. The tongue's "strength" comes from its endurance and flexibility, not maximal force. The tongue is also unique because it's the only muscle that attaches at only one end (the hyoid bone).
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Arms
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Triceps
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Chest
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Shoulders
C
Correct answer
Explanation
Push ups primarily work the pectoralis major muscles in your chest, which are responsible for pushing movements. While triceps, shoulders, and arms assist as secondary stabilizers, the chest bears the main load. The exercise is a fundamental chest builder in bodyweight training.
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Arms
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Triceps
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Chest
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Shoulders
C
Correct answer
Explanation
Push ups primarily work the pectoralis major muscles in your chest, which are responsible for pushing movements. While triceps, shoulders, and arms assist as secondary stabilizers, the chest bears the main load. The exercise is a fundamental chest builder in bodyweight training.
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The Tongue
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The Finger
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The Lips
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The Jaws
A
Correct answer
Explanation
The tongue is the only muscle in the human body attached at only one end (to the hyoid bone). This unique attachment allows for its remarkable flexibility and wide range of motion needed for speech, swallowing, and food manipulation.
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is related to leg
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is related to forearms
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is related to head
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is related to neck
A
Correct answer
Explanation
The gastrocnemius is the prominent superficial muscle in the back of the lower leg (calf). It forms the calf along with the soleus, and both attach to the Achilles tendon. It is definitely not in the forearms, head, or neck.
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muscle on the hands
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big muscle on the hips
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small muscle on the upper back
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muscle in the inner thigh
C
Correct answer
Explanation
The rhomboid muscles (rhomboid major and minor) are located on the upper back, beneath the trapezius. They connect the spine to the scapula and help retract the shoulder blade. They are not on the hands, hips, or inner thigh.
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shirts pocket come on the muscle
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shirts collar come on the muscle
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shirts buttons come on the muscle
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none of the above
B
Correct answer
Explanation
The trapezius is a large muscle extending from the skull and cervical vertebrae to the thoracic vertebrae. Its upper part supports the weight of the arm and neck, which is why a shirt's collar rests on it. The collar sits on the trapezius, not pocket or buttons.
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no legs no brachioradials
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no stomach no brachioradials
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no head no brachioradials
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no hands no brachioradials
D
Correct answer
Explanation
The brachioradialis is a muscle of the forearm that flexes the elbow. It runs along the lateral (outer) forearm from the elbow to the wrist. The awkward phrasing 'no hands no brachioradials' in Option D is intended to indicate its location in the forearm/hand area, not legs, stomach, or head.
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Bicep
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Tongue muscle
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Jaw muscle
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Iliopsoas(anterior dorsal hip muscles)
C
Correct answer
Explanation
The masseter (jaw muscle) is the strongest muscle based on force per square inch. It can exert tremendous pressure for biting and chewing. The tongue is strong for its size but not the strongest overall by absolute force.
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One(Skeletal)
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Two(Skeletal & Smooth)
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Three(Cardiac,Skeletal & Smooth)
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Four(Cardiac,Skeletal,Smooth,Stripy)
C
Correct answer
Explanation
The human body has three types of muscle tissue: skeletal (voluntary muscles attached to bones), smooth (involuntary muscles in organs and blood vessels), and cardiac (the heart muscle). Each has distinct structural and functional characteristics.
A
Correct answer
Explanation
The orbicularis oculi muscle that controls eye blinking can contract in less than 1/100th of a second, making it the fastest muscle in the human body. This rapid contraction helps protect the eyes from debris and dryness.
B
Correct answer
Explanation
The statement is false because muscle structure variation exists throughout human anatomy, not just in the face. All human muscles show individual variation in size, insertion points, and fiber composition. The face is notable for its complexity and emotional expressiveness, but it is not unique in showing anatomical variation between individuals.
B
Correct answer
Explanation
This is false. The masseter (jaw muscle) is considered the strongest muscle based on its force relative to size. The heart is the hardest working muscle, beating continuously throughout life, but not the strongest. The gluteus maximus is the largest muscle. Strength can be measured in different ways - force, endurance, or work output.
B
Correct answer
Explanation
The legs are not the body's strongest muscle. The masseter (jaw muscle) is considered the strongest based on force exerted, while the gluteus maximus is the largest. The heart is often called the strongest for its endurance. Legs contain multiple muscle groups but no single strongest muscle.