Question 1

Which bone is considered the 'keystone' of the cranial floor because it articulates with almost every other cranial bone and contains the sella turcica?

Accepted Answer

Sphenoid bone

Question 2

A forensic pathologist finds a fractured hyoid bone during an autopsy. What is the most likely significance of this finding?

Accepted Answer

It suggests possible strangulation.

Question 3

Which suture connects the two parietal bones along the midline of the skull?

Accepted Answer

Sagittal suture

Question 4

A patient suffers a blow to the back of the head and is diagnosed with a fracture near the foramen magnum. Which bone is most likely fractured?

Accepted Answer

Occipital bone

Question 5

Which of the following bones does NOT directly articulate with any other bone?

Accepted Answer

Hyoid bone

Question 6

The cribriform plate is a feature of which bone, and what is its primary function?

Accepted Answer

Ethmoid bone; passage of olfactory nerves for smell

Question 7

Which of the following best describes the function of the mastoid process of the temporal bone?

Accepted Answer

Attachment site for neck muscles, specifically the sternocleidomastoid

Question 8

A patient presents with loss of smell after a head injury. Which cranial nerve and skull feature are most likely involved?

Accepted Answer

CN I (Olfactory nerve); cribriform plate

Question 9

Which foramen allows passage of the spinal cord from the brain to the vertebral column?

Accepted Answer

Foramen magnum

Question 10

The external acoustic meatus is found in which bone, and what is its function?

Accepted Answer

Temporal bone; passage for sound waves to the ear

Question 11

Which bone contains the hypophyseal fossa, and what important structure does it house?

Accepted Answer

Sphenoid bone; pituitary gland

Question 12

A patient has difficulty moving their tongue after a skull base fracture. Which foramen and cranial nerve are most likely affected?

Accepted Answer

Hypoglossal canal; CN XII (Hypoglossal)

Question 13

Which suture is the weakest part of the temporal bone and connects it to the parietal bone?

Accepted Answer

Squamous suture

Question 14

The zygomatic process is a projection of which bone, and what does it help form?

Accepted Answer

Temporal bone; zygomatic arch (cheekbone)

Question 15

Which of the following best describes the function of the skull's foramina?

Accepted Answer

They are tunnels for nerves and blood vessels to pass through.

Question 16

A patient presents with facial paralysis. Which cranial nerve and foramen are most likely involved?

Accepted Answer

CN VII (Facial nerve); stylomastoid foramen

Question 17

Which bone forms the anterior portion of the nasal septum and is important for supporting the nasal cavity?

Accepted Answer

Vomer bone

Question 18

Which cranial nerve passes through the optic canal, and what is its primary function?

Accepted Answer

CN II (Optic nerve); vision

Question 19

A blow to the side of the skull near the ear could damage which bone and potentially affect which major sensory function?

Accepted Answer

Temporal bone; hearing

Question 20

Which of the following equations best represents the relationship between the number of paired and unpaired bones in the adult human skull, given $n_p$ is the number of paired bones and $n_u$ is the number of unpaired bones?

Accepted Answer

$n_p > n_u$

Skull Anatomy: Structure, Features, and Cranial Nerves

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