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  4. Locomotion and Movement Chapter-Wise Test 3

Locomotion and Movement Chapter-Wise Test 3

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which condition is incorrectly matched with its cause?

Osteoporosis - Low estrogen levels
Gout - Uric acid accumulation
Myasthenia gravis - Bacterial infection
Arthritis - Joint inflammation
3

Myasthenia gravis is an autoimmune disorder, not caused by bacterial infection​.

Which statement about the sliding filament theory is incorrect?

Actin filaments slide over myosin filaments.
ATP is required for muscle contraction.
Calcium ions are not involved in contraction.
Myosin heads form cross-bridges with actin filaments.
3

Calcium ions are essential for muscle contraction as they help in cross-bridge formation​.

Which condition is characterized by painful inflammation of the bursae in joints?

Arthritis
Bursitis
Gout
Osteoporosis
2

Bursitis is the inflammation of bursae, which cushion bones and tendons in joints.

Which condition is caused by a deficiency of vitamin D?

Osteoporosis
Rickets
Arthritis
Gout
2

Rickets is caused by vitamin D deficiency, leading to weakened bones in children.

Which part of a sarcomere remains unchanged during muscle contraction?

I-band
H-zone
A-band
Z-line
3

The A-band remains unchanged during contraction as it contains thick filaments.

Which joint allows movement in all directions?

Hinge joint
Ball and socket joint
Pivot joint
Gliding joint
2

The ball and socket joint allows movement in all directions, such as the shoulder and hip joints​.

Which of the following bones forms the pectoral girdle along with the clavicle?

Humerus
Scapula
Sternum
Radius
2

The scapula (shoulder blade) and clavicle together form the pectoral girdle, which supports upper limb movement.

Which of the following statements about muscle contraction is correct?

ATP is not required for muscle contraction.
Myosin heads form cross-bridges with actin filaments.
Calcium ions play no role in muscle contraction.
Actin filaments shorten during contraction.
2

Myosin heads form cross-bridges with actin filaments during muscle contraction.

What is the function of synovial fluid in synovial joints?

Provides oxygen to bones
Lubricates joints
Prevents muscle fatigue
Stores calcium
2

Synovial fluid lubricates synovial joints, reducing friction and allowing smooth movement.

Which ligament connects the femur to the tibia in the knee joint?

Achilles tendon
Anterior cruciate ligament (ACL)
Collateral ligament
Patellar ligament
2

The anterior cruciate ligament (ACL) stabilizes the knee by connecting the femur to the tibia.

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