Locomotion and Movement
Test 2

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which skeletal structure forms the main axis of the human body?

Appendicular skeleton
Axial skeleton
Pectoral girdle
Pelvic girdle
2

The axial skeleton forms the main axis of the body and includes the skull, vertebral column, ribs, and sternum.

Which type of joint allows rotation around a single axis?

Hinge joint
Ball-and-socket joint
Pivot joint
Gliding joint
3

Pivot joints, such as the joint between the atlas and axis, allow rotational movement around a single axis.

What is the role of myoglobin in muscles?

Stores glycogen
Stores oxygen
Stores calcium
Breaks down ATP
2

Myoglobin is a red-colored pigment that stores oxygen for aerobic respiration in muscles.

Which of the following statements about the skeletal system is correct?

The human skeleton consists of 208 bones.
The skull, vertebral column, ribs, and sternum constitute the axial skeleton.
The appendicular skeleton consists of 90 bones.
The vertebral column is composed of 30 vertebrae.
2

The axial skeleton includes the skull, vertebral column, ribs, and sternum, but the human skeleton consists of 206 bones, not 208.

Which of the following statements is incorrect regarding ribs?

The first seven pairs of ribs are called true ribs.
The 8th, 9th, and 10th pairs of ribs are called floating ribs.
The last two pairs of ribs do not connect ventrally.
Ribs articulate with the thoracic vertebrae dorsally.
2

The 8th, 9th, and 10th pairs of ribs are called false ribs, not floating ribs. Floating ribs are the 11th and 12th pairs.

Which of the following bones is incorrectly matched to its location?

Femur - Thigh
Humerus - Upper Arm
Scapula - Lower Leg
Radius - Forearm
3

The scapula is located in the shoulder region, not the lower leg.

Which of the following is correct regarding joints?

Fibrous joints allow free movement.
Cartilaginous joints are found between the skull bones.
Synovial joints allow significant movement and are fluid-filled.
Pivot joints are present between the femur and tibia.
3

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

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

Humerus
Tibia
Femur
Fibula
3

The femur (thigh bone) is the longest and strongest bone in the human body.

Which of the following is an example of an immovable joint?

Hinge joint
Fibrous joint
Ball-and-socket joint
Synovial joint
2

Fibrous joints, such as sutures in the skull, do not allow movement.

Which protein masks the active binding sites for myosin on actin filaments in resting muscles?

Myosin
Troponin
Tropomyosin
Collagen
2

Troponin blocks myosin-binding sites on actin filaments in the resting state, preventing contraction.

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