The Muscular System Trivia Quiz
Questions and Answers
- 1.
Called striated or voluntary muscle, contractions can be voluntarily controlled
- A.
Insertion
- B.
Muscle Tissue
- C.
Cardiac Muscle
- D.
Skeletal Muscle
Correct Answer
D. Skeletal MuscleExplanation
Skeletal muscles are called striated or voluntary muscles because their contractions can be consciously controlled. These muscles are attached to bones by tendons and are responsible for movement and locomotion. Unlike cardiac muscles, which are found in the heart and contract involuntarily, skeletal muscles allow us to perform voluntary movements such as walking, running, and lifting objects. Therefore, the correct answer is skeletal muscle.Rate this question:
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- 2.
Found in walls of hollow visceral structures such as digestive tract, blood vessels, and ureters, contractions not under voluntary control, movement caused by contractions is involuntary.
- A.
Visceral Muscle (smooth)
- B.
Deep Fascia
- C.
Sarcolemma
- D.
Sarcoplasm
Correct Answer
A. Visceral Muscle (smooth)Explanation
Visceral muscle, also known as smooth muscle, is found in the walls of hollow visceral structures such as the digestive tract, blood vessels, and ureters. Unlike skeletal muscle, it is not under voluntary control, meaning we cannot consciously control its contractions. The movement caused by contractions of visceral muscle is involuntary, meaning it occurs without conscious control. Therefore, the correct answer is Visceral Muscle (smooth).Rate this question:
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- 3.
Cells that are bound together by dense fibrous connective tissue.
- A.
Myoglobin
- B.
Aponeurosis
- C.
Tendon
- D.
Muscle Fibers
Correct Answer
C. TendonExplanation
Tendons are the correct answer because they are fibrous connective tissues that bind cells together. Tendons connect muscles to bones and transmit the force generated by muscle contractions to produce movement. They are composed of collagen fibers that provide strength and flexibility. Tendons play a crucial role in the musculoskeletal system by allowing muscles to move bones and joints, providing stability and support to the body.Rate this question:
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- 4.
A narrow band of fibrous connective tissue that attaches a muscle to a bone.
- A.
Muscle Fiber
- B.
Tetanic Contraction
- C.
Tendon
- D.
Sarcomere
Correct Answer
C. TendonExplanation
A tendon is a narrow band of fibrous connective tissue that attaches a muscle to a bone. It is responsible for transmitting the force generated by the muscle to the bone, allowing movement to occur. Tendons are strong and flexible, allowing them to withstand the tension and stress placed on them during muscle contraction. They play a crucial role in the functioning of the musculoskeletal system, enabling coordinated movement and stability.Rate this question:
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- 5.
A sustained muscle contraction.
- A.
Motor unit
- B.
Muscle Tone
- C.
Tetanic Contraction
- D.
Antagonist
Correct Answer
C. Tetanic ContractionExplanation
A tetanic contraction refers to a sustained muscle contraction that occurs when a muscle is stimulated rapidly and repeatedly. During a tetanic contraction, the muscle fibers do not have enough time to relax fully between stimuli, resulting in a continuous contraction. This type of contraction is often seen during activities that require prolonged muscle contractions, such as holding a heavy object or maintaining a certain posture.Rate this question:
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- 6.
The attachment of a muscle that remains fixed when the muscle contracts
- A.
Tendons
- B.
Origin
- C.
Insertion
- D.
Sarcolemma
Correct Answer
B. OriginExplanation
The attachment of a muscle that remains fixed when the muscle contracts is known as the origin. The origin is typically the proximal attachment of the muscle, meaning it is closer to the center of the body or the point of attachment of the limb. It provides stability and acts as an anchor for the muscle when it contracts, allowing it to exert force on the insertion point.Rate this question:
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- 7.
Connective tissue covering a muscle
- A.
Myosin filaments
- B.
Sarcoplasm
- C.
Sarcomere
- D.
Deep Fascia
Correct Answer
D. Deep FasciaExplanation
Deep fascia is a connective tissue that covers muscles. It is a dense, fibrous layer that surrounds and separates muscles and other structures in the body. It provides support and protection to the underlying muscles and helps to maintain their shape and function. Deep fascia also plays a role in transmitting forces generated by muscle contractions and helps to distribute these forces evenly throughout the body. Overall, deep fascia is an essential component of the musculoskeletal system and is crucial for the proper functioning of muscles.Rate this question:
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- 8.
Small synovial lined sacs containing a small amount of synovial fluid, located between some tendons and underlying bones.
- A.
Motor Unit
- B.
Bursae
- C.
Fibers
- D.
Neuromuscular
Correct Answer
B. BursaeExplanation
Bursae are small synovial lined sacs that contain a small amount of synovial fluid. They are located between tendons and underlying bones. Bursae act as cushions, reducing friction and allowing smooth movement between these structures.Rate this question:
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- 9.
Contain thick myofilaments and thin myofilaments
- A.
Fibers
- B.
Cartilage
- C.
Memberous layer
- D.
Synovial membrane
Correct Answer
A. FibersExplanation
The correct answer is "Fibers" because fibers are the only option listed that can contain thick myofilaments and thin myofilaments. Fibers refer to muscle fibers, which are the cells that make up muscles. Within muscle fibers, there are thick myofilaments (made of the protein myosin) and thin myofilaments (made of the protein actin), which work together to generate muscle contractions. The other options, such as cartilage, membranous layer, and synovial membrane, do not contain these myofilaments.Rate this question:
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- 10.
Separatede from each other by dark bands called Z lines
- A.
Actin filament
- B.
Sarcomere
- C.
Motor end plates
- D.
Sliding filament model
Correct Answer
B. SarcomereExplanation
The sarcomere is the basic unit of muscle contraction and is responsible for generating force and movement. It is composed of actin and myosin filaments that slide past each other during muscle contraction. The dark bands called Z lines separate the sarcomeres from each other. Therefore, the statement "Separated from each other by dark bands called Z lines" accurately describes the organization of sarcomeres within a muscle.Rate this question:
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- 11.
Slide past each other as a muscle contracts
- A.
Myofilaments
- B.
Creatine Phosphate
- C.
Hemoglobin
- D.
Myoglobin
Correct Answer
A. MyofilamentsExplanation
The correct answer is Myofilaments. Myofilaments are the protein filaments found in muscle cells that slide past each other as a muscle contracts. This sliding action is responsible for muscle contraction and movement. Myofilaments consist of two types: thick filaments made of myosin protein and thin filaments made of actin protein. When a muscle contracts, the myosin heads on the thick filaments attach to the actin filaments and pull them closer together, causing the muscle to shorten and generate force.Rate this question:
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- 12.
Enables us to maintain body position, no movement of body parts.
- A.
Contractions
- B.
Tendons
- C.
Tonic Contractions
- D.
Oxygen Debt
Correct Answer
C. Tonic ContractionsExplanation
Tonic contractions are a type of muscle contraction that enable us to maintain body position without any movement of body parts. These contractions involve a low level of muscle tension that is sustained for a prolonged period of time. They are important for maintaining posture and stability. Unlike other types of contractions, tonic contractions do not result in any visible movement of the body. Therefore, tonic contractions are the correct answer as they best fit the given description.Rate this question:
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- 13.
The specialized nerve that transmits an impulse to a muscle, causing contraction
- A.
Fatigue
- B.
Motor Neuron
- C.
Summation
- D.
Motor Unit
Correct Answer
B. Motor NeuronExplanation
A motor neuron is a specialized nerve that transmits an impulse to a muscle, causing contraction. It is responsible for sending signals from the brain or spinal cord to the muscles, allowing for voluntary movement. When a motor neuron is activated, it releases neurotransmitters that stimulate the muscle fibers, leading to muscle contraction. Therefore, the motor neuron is the correct answer as it specifically relates to the transmission of impulses to muscles for contraction.Rate this question:
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- 14.
The specialized point of contact between a nerve ending and the muscle fiber it innervates
- A.
Motor Unit
- B.
Neurotransmitter junction
- C.
Neuron
- D.
Threshold stimulus
Correct Answer
B. Neurotransmitter junctionExplanation
A neurotransmitter junction is the specialized point of contact between a nerve ending and the muscle fiber it innervates. At this junction, the nerve ending releases a chemical called a neurotransmitter, which then binds to receptors on the muscle fiber. This binding triggers a series of events that ultimately lead to muscle contraction. Therefore, the neurotransmitter junction is crucial for the communication and coordination between the nervous system and the muscles.Rate this question:
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- 15.
The combination of a motor neuron with the muscle cell or cells it innervates
- A.
Tetanic contraction
- B.
Motor unit
- C.
Summation
- D.
Maximal stimulus
Correct Answer
B. Motor unitExplanation
A motor unit refers to the combination of a motor neuron and the muscle cell or cells it innervates. When a motor neuron sends a signal to the muscle cell, it causes the muscle to contract. This contraction can be sustained and continuous, which is known as a tetanic contraction. The motor unit plays a crucial role in coordinating muscle movements and allowing for precise control over muscle contractions. Summation refers to the increase in muscle contraction strength that occurs when multiple motor units are activated simultaneously. A maximal stimulus refers to the highest level of stimulation that can be applied to a muscle, resulting in the strongest possible contraction.Rate this question:
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- 16.
The minimal level of stimulation required to cause a muscle fiber to contract
- A.
Maximal stimulus
- B.
Threshold stimulus
- C.
Twitch
- D.
Tetanic
Correct Answer
B. Threshold stimulusExplanation
The threshold stimulus refers to the minimal level of stimulation needed to trigger a muscle fiber to contract. It is the point at which the muscle fiber becomes excitable and initiates the contraction process. This level of stimulation is necessary to activate the muscle and produce a response. If the stimulus is below the threshold, the muscle fiber will not contract, but once it reaches or exceeds the threshold, the muscle fiber will respond and contract.Rate this question:
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- 17.
Contractions are laboratory phenomena and do not play as significant role in normal muscular activity.
- A.
Tetanic
- B.
Twitch
- C.
Isotonic
- D.
Isometric
Correct Answer
B. TwitchExplanation
Contractions refer to the tightening or shortening of muscles. Tetanic contractions occur when the muscles are stimulated rapidly and continuously, resulting in sustained muscle contraction. Isotonic contractions involve the muscles changing length while exerting a constant force, such as when lifting a weight. Isometric contractions occur when the muscles generate force without changing length, such as pushing against an immovable object. Twitch contractions are brief, involuntary muscle contractions that are not sustained and do not play a significant role in normal muscular activity.Rate this question:
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- 18.
Contractions are sustained and steady muscular contractions caused by a series of stimuli bombarding a muscle in rapid succession.
- A.
Tetanic
- B.
Isotonic
- C.
Isometric
- D.
Twitch
Correct Answer
A. TetanicExplanation
Tetanic contractions are sustained and steady muscular contractions that occur when a muscle is bombarded with a series of stimuli in rapid succession. This causes the muscle to contract and remain contracted without any relaxation in between.Rate this question:
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- 19.
Contraction of a muscle that produces movement at a joint
- A.
Orientation fibers
- B.
Isometric
- C.
Isotonic
- D.
Function
Correct Answer
C. IsotonicExplanation
Isotonic refers to a type of muscle contraction that produces movement at a joint. In an isotonic contraction, the muscle changes length and tension is developed to move a body part. This is different from an isometric contraction where the muscle does not change length and tension is developed without movement. Orientation fibers and function are not directly related to the concept of muscle contraction.Rate this question:
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- 20.
Muscle contractions that do not produce movement
- A.
Origin
- B.
Insertion
- C.
Isometric
- D.
Occipitalis
Correct Answer
C. IsometricExplanation
Isometric refers to muscle contractions that do not produce movement. In an isometric contraction, the muscle stays the same length while generating tension. This type of contraction is often used for maintaining posture or stabilizing joints. The terms "Origin" and "Insertion" refer to the points where a muscle attaches to bones, while "Occipitalis" refers to a specific muscle in the back of the head.Rate this question:
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- 21.
Movement of a part toward the midline of the body
- A.
Rotation
- B.
Abduction
- C.
Adduction
- D.
Extension
Correct Answer
C. AdductionExplanation
Adduction refers to the movement of a body part towards the midline of the body. This means that the body part is being brought closer to the center of the body. In contrast, abduction refers to the movement of a body part away from the midline of the body. Rotation refers to the movement of a body part around its own axis. Extension refers to the straightening or increasing the angle of a joint.Rate this question:
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- 22.
Elevation of the dorsum or top of the foot
- A.
Supination
- B.
Pronation
- C.
Plantar Flexion
- D.
Dorsiflexion
Correct Answer
D. DorsiflexionExplanation
Dorsiflexion refers to the movement of the foot where the top of the foot is elevated or raised. This movement is opposite to plantar flexion, which involves pointing the toes downward. In the context of the given question, the correct answer is dorsiflexion because it accurately describes the elevation of the dorsum or top of the foot.Rate this question:
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Current Version
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Mar 22, 2023Quiz Edited by
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Dec 14, 2010Quiz Created by
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