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51.

The sternum is also known as the:

Floating rib

Breastbone

Collarbone

Shoulder blade

Explanation Comments

Answer: Breastbone

Explanation:

The sternum, or breastbone, is a flat bone located in the center of the chest. It articulates with the clavicles and ribs and serves as an attachment point for muscles and ribs.

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52.

Which of the following bones is NOT part of the pelvic girdle?

Pubis

Femur

Ilium

Ischium

Explanation Comments

Answer: Femur

Explanation:

The femur is the thigh bone and is not part of the pelvic girdle. Bones of the pelvic girdle include the ilium, pubis, and ischium, which fuse to form the hip bone.

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53.

Which bone articulates with the scapula to form the shoulder joint?

Ulna

Humerus

Radius

Clavicle

Explanation Comments

Answer: Humerus

Explanation:

The humerus articulates with the scapula to form the glenohumeral joint, commonly known as the shoulder joint. The clavicle also contributes to the shoulder joint but does not directly articulate with the scapula.

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54.

The tibia and fibula are bones of which part of the body?

Arm

Leg

Foot

Hand

Explanation Comments

Answer: Leg

Explanation:

The tibia and fibula are bones of the lower leg. The tibia, or shinbone, is the larger, weight-bearing bone, while the fibula is located on the lateral side of the leg and provides muscle attachment and lateral stability.

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55.

Which bone forms the heel of the foot?

Cuboid

Navicular

Calcaneus

Talus

Explanation Comments

Answer: Calcaneus

Explanation:

The calcaneus, or heel bone, is the largest tarsal bone and forms the heel of the foot. It provides support for the body's weight and serves as an attachment point for muscles and ligaments.

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56.

The atlas and axis are bones of which part of the body?

Ribcage

Pelvis

Spine

Skull

Explanation Comments

Answer: Spine

Explanation:

The atlas and axis are the first two cervical vertebrae located in the neck region of the spine. The atlas supports the skull, while the axis allows for rotation of the head.

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57.

Which bone forms the forehead?

Temporal bone

Occipital bone

Parietal bone

Frontal bone

Explanation Comments

Answer: Frontal bone

Explanation:

The frontal bone forms the forehead and the upper part of the orbits (eye sockets). It articulates with the parietal bones posteriorly and the nasal bone and maxilla inferiorly.

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58.

Which bone forms the bridge of the foot?

Talus

Cuneiform

Cuboid

Navicular

Explanation Comments

Answer: Cuneiform

Explanation:

The cuneiform bones (medial, intermediate, and lateral) are tarsal bones located in the midfoot region. They contribute to the formation of the arches of the foot and help support body weight during walking and standing.

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59.

Which bone forms the majority of the shoulder joint?

Scapula

Humerus

Clavicle

Sternum

Explanation Comments

Answer: Humerus

Explanation:

The humerus articulates with the scapula and clavicle to form the shoulder joint. It forms the ball-and-socket joint with the glenoid cavity of the scapula.

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60.

The occipital condyles articulate with which part of the spinal column?

Sacrum

Lumbar vertebrae

Thoracic vertebrae

Cervical vertebrae

Explanation Comments

Answer: Cervical vertebrae

Explanation:

The occipital condyles of the occipital bone articulate with the atlas (first cervical vertebra) to form the atlanto-occipital joint, allowing for nodding movements of the head.

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