Question 1

Which of the following best describes the primary function of the axial skeleton?

Accepted Answer

It forms the longitudinal axis of the body, supports the head, neck, and trunk, and protects the brain, spinal cord, and thoracic organs.

Question 2

A patient presents with a herniated (prolapsed) disc. Which structure is most likely to have ruptured, allowing the nucleus pulposus to protrude and compress a spinal nerve?

Accepted Answer

The anulus fibrosus

Question 3

Which bone is the only movable bone of the adult skull (excluding the ossicles of the middle ear)?

Accepted Answer

Mandible

Question 4

A forensic anthropologist is examining a pelvis and notes that it is wide, light, and round. What is the most likely biological sex of the individual, and what is the functional significance of these features?

Accepted Answer

Female; these features facilitate childbirth.

Question 5

Which of the following correctly matches the vertebral region with its number of vertebrae in a typical adult?

Accepted Answer

Cervical: 7, Thoracic: 12, Lumbar: 5

Question 6

During CPR, why is it important to place your hands on the mid-sternum rather than the xiphoid process?

Accepted Answer

Pressure on the xiphoid process can drive it into underlying organs, causing damage or hemorrhage.

Question 7

Which of the following bones does NOT articulate directly with any other bone and serves as an attachment site for muscles involved in swallowing and speech?

Accepted Answer

Hyoid bone

Question 8

A patient suffers a fracture to the lateral bone of the forearm. Which bone is fractured, and what is a key anatomical feature of this bone?

Accepted Answer

Radius; it is lateral in anatomical position and articulates with the carpal bones of the wrist.

Question 9

Which of the following statements about the vertebral column is correct?

Accepted Answer

The sacrum is composed of five fused vertebrae and articulates with the hip bones.

Question 10

A patient presents with tingling and numbness in the hand due to compression of the median nerve. Which anatomical structure is most likely involved?

Accepted Answer

Carpal tunnel

Question 11

Which of the following best explains why the lumbar vertebrae have the largest vertebral bodies?

Accepted Answer

They must support the greatest weight of the body.

Question 12

Which of the following is a correct description of the acetabulum?

Accepted Answer

It is the deep socket in the hip bone that receives the head of the femur.

Question 13

A newborn's skull contains fontanels. What is the primary function of these structures?

Accepted Answer

They allow for rapid brain growth and flexibility during birth.

Question 14

Which of the following bones is NOT part of the axial skeleton?

Accepted Answer

Femur

Question 15

A patient is diagnosed with lordosis. Which region of the vertebral column is most affected, and what is the characteristic curvature?

Accepted Answer

Lumbar region; exaggerated anterior curvature

Question 16

Which of the following best describes the difference between true ribs and floating ribs?

Accepted Answer

True ribs attach directly to the sternum via their own costal cartilage, while floating ribs do not attach to the sternum at all.

Question 17

Which of the following equations correctly represents the total number of bones in the adult vertebral column, given the following: $$C = 7 ($$cervical), $$T = 12 ($$thoracic), $$L = 5 ($$lumbar), $$S = 1 ($$sacrum), $$Co = 1 ($$coccyx)?

Accepted Answer

$$C + T + L + S + Co = 26$$

Question 18

A patient has difficulty nodding their head 'yes' but can still shake their head 'no.' Which vertebra is most likely affected?

Accepted Answer

Atlas (C1)

Question 19

Which of the following best explains why the femur is considered the strongest bone in the body?

Accepted Answer

It supports the weight of the entire body during standing, walking, and running.

Question 20

Which of the following statements about the bones of the hand and foot is correct?

Accepted Answer

Both the thumb (pollex) and the big toe (hallux) have only two phalanges, while the other digits have three.

Chapter 7: The Skeleton – Structure and Function of the Human Skeletal System

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