Question 1

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

Accepted Answer

Scapula

Question 2

Which suture separates the occipital bone from the parietal bones?

Accepted Answer

Lambdoid suture

Question 3

A patient presents with difficulty breathing and a nasal voice. Imaging reveals a deviated bony nasal septum. Which bone is most likely involved?

Accepted Answer

Vomer

Question 4

Which of the following is a function of the sinuses in the skull?

Accepted Answer

Serve as resonating chambers in speech production

Question 5

Which vertebra articulates directly with the skull?

Accepted Answer

C1 (atlas)

Question 6

Which of the following best describes the function of the hyoid bone?

Accepted Answer

Supports the larynx and attaches muscles of the tongue

Question 7

A blow to the side of the head fractures the zygomatic arch. Which bones are involved in this injury?

Accepted Answer

Zygomatic bone and temporal bone

Question 8

Which of the following foramen transmits the medulla oblongata and vertebral arteries?

Accepted Answer

Foramen magnum

Question 9

Which ribs are classified as 'floating ribs'?

Accepted Answer

Ribs 11–12

Question 10

Which of the following is a secondary spinal curve that develops as a child learns to stand?

Accepted Answer

Lumbar curve

Question 11

Which bone contains the sella turcica, which houses the pituitary gland?

Accepted Answer

Sphenoid

Question 12

A patient has lost sensation in the cheek due to nerve damage. Which foramen is most likely affected?

Accepted Answer

Zygomaticofacial foramen

Question 13

Which of the following statements about the sacrum is TRUE?

Accepted Answer

It consists of five fused vertebrae

Question 14

Which part of the sternum articulates with the clavicles?

Accepted Answer

Manubrium

Question 15

Which of the following is a distinguishing feature of lumbar vertebrae?

Accepted Answer

Thick, oval-shaped bodies and no costal facets

Question 16

Which bone forms the posterior base of the skull and contains the foramen magnum?

Accepted Answer

Occipital bone

Question 17

Which of the following best describes the function of the inferior nasal conchae?

Accepted Answer

Increase epithelial surface area to warm and humidify inhaled air

Question 18

Which of the following is TRUE regarding the auditory ossicles?

Accepted Answer

They transfer sound vibrations from the tympanic membrane to the internal ear

Question 19

Which of the following bones does NOT contribute to the formation of the orbit?

Accepted Answer

Mandible

Question 20

Which of the following is the correct formula for the total number of bones in the axial skeleton?

Accepted Answer

$$8 \ (cranial) + 14 \ (facial) + 6 \ (auditory \ ossicles) + 1 \ (hyoid) + 24 \ (ribs) + 1 \ (sternum) + 24 \ (vertebrae) + 1 \ (sacrum) + 1 \ (coccyx) = 80$$

The Axial Skeleton: Structure, Function, and Key Components

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