The Skull

Question 1

How many bones is the skull comprised of

Answer 1

22 bones, plus 1 hyoid bone

Question 2

What are the 2 distinct regions of the skull

Answer 2

Neurocranium and viscerocranium

Question 3

What does the neurocranium consist of

Answer 3

A base and a vault with sides and roof

Question 4

What does the upper part of the viscerocranium form

Answer 4

Orbits and nose

Question 5

What does the lower part of the viscerocranium form

Answer 5

Jaws; also called mandible

Question 6

List the 6 type of bones that form the neurocranium

Answer 6

Frontal; Temporal (2); Occipital; Parietal (2); Sphenoid; Ethmoid

Question 7

List the 9 type of bones that form the viscerocranium

Answer 7

Zygomatic (2); Maxilla (2); Nasal (2); Palatine (2); Lacrimal (2); Inferior Nasal Concha (2); Mandible; Vomer; Hyoid

Question 8

What are buttresses

Answer 8

Reinforced pathways through the skull

Question 9

At what age does the anterior fontanelle close

Answer 9

By 18-24 months

Question 10

What direction is labial

Answer 10

Towards lips

Question 11

What direction is buccal

Answer 11

Towards cheeks

Question 12

What direction is lingual

Answer 12

Towards tongue

Question 13

How many teeth do we have

Answer 13

32

Question 14

Split the teeth up into their groups

Answer 14

8 incisors; 4 canines; 8 premolars; 12 molars

Question 15

How many facial muscles are responsible for masticatory movements (chewing)

Answer 15

4

Question 16

What muscles elevate the mandible

Answer 16

Masseter; temporalis; medial pterygoid

Question 17

What muscle depresses the mandible

Answer 17

Lateral pterygoid

Question 18

What muscles change the shape of the tongue

Answer 18

Intrinsic muscles

Question 19

What muscles change the position of the tongue

Answer 19

Extrinsic muscles

Question 20

What are the 5 layers that make up the scalp

Answer 20

S(kin); C(onnective tissue); A(poneurosis); L(oose connective tissue); P(ericranium - a periostium)

Question 21

Name the first 6 cranial nerves (CN1-CN6)

Answer 21

Olfactory; optic; oculomotor; trochlear; trigeminal; abducent

Question 22

Name the last 6 cranial nerves (CN7-CN12)

Answer 22

Facial; vestibulocochlear; glossopharyngeal; vagus; (spinal) accessory; hypoglossal

Question 23

Where do the eyes sit in the skull

Answer 23

A bony socket called the orbit

Question 24

How many and what muscles are involved in the movement of the eye

Answer 24

6 extrinsic muscles

Question 25

What cranial nerves are involved in the movement of the eye

Answer 25

CN3, CN4 and CN6

Question 26

What are the 3 regions of the ear

Answer 26

External ear, middle ear and inner ear

Question 27

Name the 3 ear ossicles

Answer 27

Malleus; incus; stapes