Question 1

Which of the following bones is unpaired in the adult human skull?

Accepted Answer

Ethmoid bone

Question 2

The sagittal suture connects which cranial bones?

Accepted Answer

Parietal bones

Question 3

Which bone marking serves as a passageway for the optic nerves and the ophthalmic arteries?

Accepted Answer

Optic canal

Question 4

What is the main function of the cranium?

Accepted Answer

Serves as a protective encasement for the brain and organs of hearing and equilibrium

Question 5

Which of the following is NOT a function of the paranasal sinuses?

Accepted Answer

Increase production of cerebrospinal fluid

Question 6

Which bone forms the keystone of the cranial floor?

Accepted Answer

Sphenoid bone

Question 7

A patient presents with difficulty articulating the mandible. Which bone marking is most likely involved?

Accepted Answer

Mandibular fossa

Question 8

Which of the following vertebrae is used as a landmark for counting vertebrae and is called the vertebra prominens?

Accepted Answer

C7

Question 9

Which equation best represents the total number of vertebrae in the adult vertebral column?

Accepted Answer

$$7 + 12 + 5 + 1 + 1 = 26$$

Question 10

Which structure acts as a cushion and shock absorber between vertebrae?

Accepted Answer

Intervertebral disc

Question 11

Which of the following bones contributes to the boundaries of the orbit, nasal cavity, and paranasal sinuses?

Accepted Answer

Frontal bone

Question 12

Which suture connects the parietal bones and the occipital bone?

Accepted Answer

Lambdoid suture

Question 13

A patient has a fracture at the condylar process of the mandible. What function is most likely impaired?

Accepted Answer

Articulation, movement, and stability of the jaw

Question 14

Which of the following statements about the cervical vertebrae is TRUE?

Accepted Answer

They are the smallest and lightest vertebrae

Question 15

Which bone marking is responsible for transmitting the internal carotid artery into the cranial cavity?

Accepted Answer

Carotid canal

Question 16

Which of the following is a paired facial bone?

Accepted Answer

Maxilla

Question 17

Which equation correctly represents the number of cranial and facial bones in the adult skull?

Accepted Answer

$$8 + 14 = 22$$

Question 18

Which bone forms the largest part of the face and the lower jawbone?

Accepted Answer

Mandible

Question 19

Which of the following is a function of the vertebral column's curvatures?

Accepted Answer

Increase resilience and flexibility of the spine

Question 20

A patient has damage to the mastoid process. Which function is most likely affected?

Accepted Answer

Muscle attachment and mastoid air cell function

Study Notes: The Axial Skeleton – Skull and Vertebral Column

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