Locomotion and Movement Chapter-Wise Test 21

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which type of joint is found between the femur and tibia?

Hinge joint
Ball and socket joint
Pivot joint
Saddle joint
1

The knee joint between the femur and tibia is a hinge joint that allows movement in one direction.

Which condition is caused by the degeneration of myelin sheath in neurons?

Multiple sclerosis
Muscular dystrophy
Myasthenia gravis
Arthritis
1

Multiple sclerosis is a neurological disorder caused by the degeneration of the myelin sheath surrounding neurons.

Which of the following conditions results from calcium deficiency and leads to involuntary muscle contractions?

Gout
Arthritis
Tetany
Osteoporosis
3

Tetany is caused by low calcium levels, leading to involuntary muscle spasms.

Which enzyme is responsible for breaking down ATP during muscle contraction?

Troponin
ATPase
Myosin kinase
Phosphatase
2

ATPase, present in myosin heads, hydrolyzes ATP to provide energy for muscle contraction.

Which of the following conditions is caused by an autoimmune attack on myelin sheaths?

Muscular dystrophy
Multiple sclerosis
Myasthenia gravis
Arthritis
2

Multiple sclerosis is a neurological disorder caused by the immune system attacking the myelin sheath of neurons.

Which of the following is a characteristic of smooth muscle?

Striated and voluntary
Non-striated and involuntary
Striated and involuntary
Multinucleated
2

Smooth muscle is non-striated and involuntary, found in the walls of internal organs.

What is the name of the neurotransmitter responsible for muscle contraction?

Dopamine
Serotonin
Acetylcholine
Epinephrine
3

Acetylcholine is the neurotransmitter that triggers muscle contraction by generating an action potential.

Which type of muscle fiber is rich in mitochondria and adapted for endurance activities?

Fast-twitch fibers
Slow-twitch fibers
White muscle fibers
Non-striated muscle fibers
2

Slow-twitch muscle fibers are rich in mitochondria and myoglobin, making them ideal for endurance activities.

Which of the following muscle types is correctly matched to its characteristic?

Skeletal muscle - Involuntary
Smooth muscle - Striated
Cardiac muscle - Branched
Visceral muscle - Voluntary
3

Cardiac muscles are striated and branched, unlike smooth muscles, which are non-striated​.

Which statement about myosin filaments is correct?

Myosin filaments are thinner than actin filaments.
Myosin heads contain ATPase activity.
Myosin does not form cross-bridges with actin.
Myosin filaments are composed of tropomyosin.
2

Myosin heads contain ATPase, which helps in ATP hydrolysis for muscle contraction​.

Performance Summary

Score:

Category Details
Total Attempts:
Total Skipped:
Total Wrong Answers:
Total Correct Answers:
Time Taken:
Average Time Taken per Question:
Accuracy:
0