Locomotion and Movement
Test 7

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following is an example of a sesamoid bone?

Scapula
Patella
Clavicle
Sternum
2

The patella (knee cap) is a sesamoid bone that develops within a tendon and protects the knee joint.

Which of the following pairs is correctly matched?

Osteoblasts - Bone resorption
Osteoclasts - Bone formation
Osteocytes - Maintain bone structure
Chondrocytes - Blood cell production
3

Osteocytes are mature bone cells that help maintain bone structure and regulate mineral balance.

Which of the following bones does not directly articulate with any other bone?

Hyoid
Femur
Radius
Ulna
1

The hyoid bone, located in the neck, does not directly articulate with any other bone.

Which of the following statements about muscle contraction is correct?

ATP is not required for muscle contraction.
Calcium ions are stored in the sarcolemma.
The 'H' zone disappears during full contraction.
Myosin heads bind to troponin directly.
3

During full contraction, the 'H' zone disappears as actin filaments slide over myosin filaments​.

Which of the following bones is a part of the axial skeleton?

Femur
Scapula
Humerus
Sternum
4

The sternum is a part of the axial skeleton, whereas the femur, scapula, and humerus belong to the appendicular skeleton​.

Which of the following statements about joints is incorrect?

Fibrous joints allow no movement.
Cartilaginous joints allow slight movement.
Synovial joints do not contain a fluid-filled cavity.
Pivot joints allow rotational movement.
3

Synovial joints are characterized by the presence of a fluid-filled cavity that allows significant movement​..

Which disorder is incorrectly matched with its cause?

Myasthenia gravis - Autoimmune disorder
Osteoporosis - High estrogen levels
Gout - Uric acid accumulation
Arthritis - Joint inflammation
2

Osteoporosis is caused by decreased estrogen levels, not high estrogen levels​.

What is the primary function of tendons in the musculoskeletal system?

Connect bones to bones
Attach muscles to bones
Cushion joints
Store calcium
2

Tendons are fibrous tissues that connect muscles to bones, facilitating movement.

Which structure in the skeletal system protects the spinal cord?

Ribs
Vertebral column
Sternum
Pelvic girdle
2

The vertebral column encases and protects the spinal cord, providing structural support.

Which protein in skeletal muscle has ATPase activity?

Troponin
Tropomyosin
Myosin
Actin
3

Myosin contains ATPase activity, which is essential for muscle contraction by hydrolyzing ATP.

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