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WorksheetsMuscular System
Total questions: 25
Worksheet time: 13mins
What are the three main types of muscle tissue?
Red, White, Blue
Tendons, Ligaments, Cartilage
Skeletal, Cardiac, Smooth
Epithelial, Connective, Nervous
Which type of muscle is involuntary and found in the walls of organs?
Striated muscle
Cardiac muscle
Skeletal muscle
Smooth muscle
What is the primary function of skeletal muscle?
Facilitating movement of the body.
Regulating body temperature through sweat.
Storing energy for metabolic processes.
Providing structural support to bones.
Describe the process of muscle contraction at the cellular level.
Muscle contraction occurs through the sliding filament theory involving the interaction of actin and myosin filaments.
Muscle contraction occurs only during relaxation of the muscle fibers.
Actin and myosin filaments do not play a role in muscle contraction.
Muscle contraction is solely controlled by the nervous system without any filament interaction.
What is the role of calcium ions in muscle contraction?
Calcium ions inhibit muscle contraction by blocking actin and myosin interaction.
Calcium ions are only involved in nerve signal transmission, not muscle contraction.
Calcium ions are responsible for the relaxation of muscles after contraction.
Calcium ions facilitate muscle contraction by enabling the interaction between actin and myosin.
Name the protein that acts as a motor in muscle contraction.
troponin
myosin
actin
tropomyosin
What is the difference between isotonic and isometric contractions?
Isotonic contractions change muscle length; isometric contractions do not.
Isotonic contractions are stronger than isometric contractions.
Isotonic contractions occur only during relaxation, while isometric contractions occur during contraction.
Isometric contractions change muscle length; isotonic contractions do not.
Identify the major muscle groups in the human body.
Chest, back, shoulders, arms, abdomen, legs, glutes
hips, fingers, toes, chest
calves, biceps, triceps, quads
neck, wrists, ankles, forearms
What is the function of the diaphragm in the muscular system?
The diaphragm supports the spine during physical activities.
The diaphragm is responsible for blood circulation in the body.
The diaphragm helps in digestion by contracting the stomach.
The diaphragm aids in respiration by contracting to allow air into the lungs and relaxing to expel air.
List two common disorders associated with skeletal muscles.
Muscular dystrophy, Myasthenia gravis
Tendinitis
Arthritis
Osteoporosis
What is muscular dystrophy and how does it affect muscle function?
Muscular dystrophy is a nutritional deficiency that leads to muscle cramps.
Muscular dystrophy is an autoimmune disease that causes muscle inflammation.
Muscular dystrophy is a genetic disorder that leads to progressive muscle weakness and affects muscle function.
Muscular dystrophy is a viral infection that temporarily weakens muscles.
Explain the term 'muscle atrophy' and its causes.
Muscle atrophy is the reduction in muscle mass and strength, caused by inactivity, aging, malnutrition, medical conditions, and hormonal changes.
Muscle atrophy is caused solely by genetic factors.
Muscle atrophy only occurs in athletes after intense training.
Muscle atrophy is an increase in muscle size due to exercise.
What is the role of tendons in the muscular system?
Tendons store energy for muscle contraction.
Tendons are responsible for blood circulation in muscles.
Tendons connect muscles to bones, enabling movement.
Tendons connect bones to bones, providing stability.
How does exercise affect muscle strength and endurance?
Exercise increases muscle strength through resistance training and enhances endurance via aerobic activities.
Exercise decreases muscle strength and has no effect on endurance.
Only resistance training improves endurance, not aerobic activities.
Exercise leads to muscle fatigue and reduces overall strength.
What is myasthenia gravis and how does it impact muscle activity?
Myasthenia gravis is an autoimmune disorder that impairs muscle activity by blocking nerve signals to muscles, resulting in weakness and fatigue.
Myasthenia gravis is a viral infection that causes muscle spasms.
Myasthenia gravis is a genetic disorder that enhances muscle strength.
Myasthenia gravis is a nutritional deficiency that improves muscle activity.
13. (a) – how many muscle we have in our body
10. (a) – is a stretched or torn muscle or tendon. Twisting or pulling these tissues can cause a strain. Strains can happen suddenly or develop over time. Back and hamstring muscle strains are common. Many people get strains playing sports.
8. (a) – are those muscles that are attached to the bones.
6. (a) – are those muscles that you cannot control.
4. (a) - the heart muscle. An involuntary muscle over which you have no control.
3. (a) – is wasting away of the body or of an organ or part, as from deficient nutrition, nerve damage, or lack of use.
IDENTIFY C
(a)
IDENTIFY C
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IDENTIFY D
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IDENTIFY A
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