Locomotion and Movement Chapter-Wise Test 11

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which neurotransmitter is released at the neuromuscular junction to trigger muscle contraction?

Dopamine
Serotonin
Acetylcholine
Epinephrine
3

Acetylcholine is released at the neuromuscular junction, where it triggers muscle contraction.

Which of the following movements is an example of flexion?

Straightening the knee
Bending the elbow
Lifting the arm sideways
Rotating the neck
2

Flexion decreases the angle between two bones, such as bending the elbow.

Which of the following conditions is characterized by inflammation of synovial membranes?

Osteoporosis
Gout
Rheumatoid arthritis
Osteoarthritis
3

Rheumatoid arthritis is an autoimmune disease that causes inflammation of the synovial membranes in joints.

Which muscle type is incorrectly matched with its characteristic?

Skeletal muscle - Voluntary
Cardiac muscle - Non-striated
Smooth muscle - Involuntary
Skeletal muscle - Striated
2

Cardiac muscle is striated, not non-striated​.

Which structural protein provides elasticity to connective tissues like ligaments?

Collagen
Elastin
Keratin
Myosin
2

Elastin provides flexibility and elasticity to connective tissues such as ligaments.

Which type of movement occurs when a limb is moved away from the midline of the body?

Flexion
Extension
Abduction
Adduction
3

Abduction is the movement of a limb away from the midline, such as lifting the arm sideways.

Which component of a synovial joint acts as a cushion and absorbs shock?

Ligament
Meniscus
Tendon
Synovial membrane
2

The meniscus is a fibrocartilaginous structure that provides cushioning and shock absorption in synovial joints.

Which type of bone tissue contains Haversian systems?

Spongy bone
Compact bone
Cartilage
Red bone marrow
2

Compact bone contains Haversian systems, which consist of concentric lamellae around a central canal.

Which region of a sarcomere remains unchanged during muscle contraction?

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

The A-band remains unchanged during muscle contraction as it is composed of thick filaments.

Which of the following bones forms the lower jaw?

Maxilla
Mandible
Temporal bone
Zygomatic bone
2

The mandible is the only movable bone of the skull and forms the lower jaw.

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