Special Senses

Question 1

What is the pterion?

Answer 1

The point on the skull where the frontal, parietal , temporal and sphenoid bones meet.

Question 2

What part of the eye is coloured and responsible for controlling the amount of light that reaches the eye?

Answer 2

Iris

Question 3

What is the name for the white avascular tissue if the eye?

Answer 3

Sclera

Question 4

Which chamber sits between the lens and the iris?

Answer 4

The posterior chamber

Question 5

Which chamber of the eye sits posterior to the lens and comprises most of the body of the eye?

Answer 5

Vitreous chamber

Question 6

What is the name of the X shaped space where the optic nerves pass to the brain?

Answer 6

Optic chiasm

Question 7

What is the optic tract?

Answer 7

The continuation of the optic nerve from the optic chiasm to the brain

Question 8

In which lobe of the brain are visual signals processed?

Answer 8

Occipital lobe

Question 9

Which gland is responsible for tear production?

Answer 9

Lacrimal gland

Question 10

What are the functions of tears?

Answer 10

Lubricate movement of the eye

Remove debris

Question 11

Tears remove debris from the eye and wash it away into…?

Answer 11

The nose

Question 12

In a blowout fracture of the orbit where do the eyes come to rest?

Answer 12

Maxillary sinus

Question 13

What are the functions of the paranasal sinuses?

Answer 13

To reduce weight of the skull and the anterior of the face which allows circulation of movement and contributes to the resonance of sounds.

Question 14

In what directions do the orbits of the eye point?

Answer 14

Superiorly and laterally

Question 15

Which cranial nerves control the extra-ocular muscles?

Answer 15

Third
Fourth
Sixth

Question 16

What are the six extra-ocular muscles called?

Answer 16

Superior rectus
Inferior rectus
Medial rectus
Lateral rectus
Superior oblique
Inferior oblique

Question 17

Why is incoming air best warmed, humidified and filtered by the nose?

Answer 17

Because it has a rich, superficial blood supply, mucous provides moisture and the mucous and hairs trap particles in the air

Question 18

Which nerve converts chemical information from olfactants to electrical information that is relayed to the brain?

Answer 18

Cranial nerve one

Question 19

What is the buccal surface of the tooth?

Answer 19

The medial surface that faces the inside of the cheek

Question 20

What are the functions of the nasal conchae?

Answer 20

Regulate temperature of inhaled air
Regulate humidity of inhaled air
Help trap foreign particles
Increase turbulence of inhaled air

Question 21

Which nerve carries information about taste and general sensation from the anterior 2/3 of the tongue?

Answer 21

Lingual nerve

Question 22

Which nerve carries information about taste and general sensation from the posterior 1/3 of the tongue?

Answer 22

Glossopharyngeal nerve

Question 23

Which cranial nerve controls most of the tongue muscles?

Answer 23

Hypoglossal

Question 24

The internal acoustic meatus is found on which part of the temporal bone?

Answer 24

Petrous part