Locomotion and Movement Chapter-Wise Test 16

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following bones is the smallest in the human body?

Stapes
Incus
Malleus
Hyoid
1

The stapes, located in the middle ear, is the smallest bone in the human body.

Which condition is characterized by progressive degeneration of skeletal muscles due to genetic factors?

Myasthenia gravis
Muscular dystrophy
Arthritis
Osteoporosis
2

Muscular dystrophy is a genetic disorder leading to the weakening and degeneration of skeletal muscles.

Which of the following movements is an example of abduction?

Lifting the arm sideways
Bringing the arm toward the body
Bending the knee
Rotating the wrist
1

Abduction is the movement away from the midline of the body, such as lifting the arm sideways​.

Which of the following movements occurs when a person turns their head from side to side?

Flexion
Extension
Rotation
Abduction
3

Rotation occurs when the head is turned from side to side using the atlantoaxial pivot joint.

Which of the following bones is NOT a part of the cranium?

Frontal bone
Parietal bone
Mandible
Occipital bone
3

The mandible is part of the facial skeleton, while the frontal, parietal, and occipital bones are part of the cranium.

Which movement occurs when a limb moves toward the midline of the body?

Abduction
Adduction
Flexion
Extension
2

Adduction is the movement of a limb toward the midline of the body, such as bringing the arms to the side.

Which part of the skeletal system 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.

Which of the following is an example of a saddle joint?

Hip joint
Wrist joint
Thumb joint (carpometacarpal joint)
Elbow joint
3

The carpometacarpal joint of the thumb is an example of a saddle joint​.

Which of the following is incorrect about the rib cage?

There are 12 pairs of ribs in humans.
The first seven pairs are called true ribs.
The last two pairs are called false ribs.
Ribs articulate with the thoracic vertebrae dorsally.
3

The last two pairs of ribs are called floating ribs, not false ribs.

Which structure in the muscle fiber releases calcium ions for muscle contraction?

Sarcolemma
Sarcoplasmic reticulum
T-tubules
Myosin heads
2

The sarcoplasmic reticulum stores and releases calcium ions needed for muscle contraction.

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