ENT

Question 1

Epithelium of the nasal vestibule

Answer 1

Stratified squamous

Question 2

Respiratory epithelium

Answer 2

Ciliated pseudostratified columnar

Question 3

Which cranial nerve supplies the superior portion of the nasal cavity?

Answer 3

V1

Question 4

Which cranial nerve supplies the inferior portion of the nasal cavity?

Answer 4

V2

Question 5

Which nerves supply the nasal cavity?

Answer 5

Anterior ethmoidal from V1

Nasopalatine from V2

Question 6

Which nerve is the anterior ethmoidal nerve a branch of?

Answer 6

Nasociliary nerve

Question 7

Blood supply of the nasal cavity

Answer 7

Anterior and posterior ethmoidal arteries
Sphenopalatine artery
Greater palatine artery
Lateral nasal and septal branches of the facial artery

Question 8

Which structures drain into the sphenoethmoidal recess?

Answer 8

Sphenoid sinus

Question 9

Which structures drain into the superior nasal meatus?

Answer 9

Posterior ethmoidal air cells

Question 10

Which structures drain into the semilunar hiatus of the middle nasal meatus?

Answer 10

Frontal sinuses
Maxillary sinuses
Anterior ethmoidal air cells

Question 11

Which structures drain into the ethmoidal bulla of the middle nasal meatus?

Answer 11

Middle ethmoidal air cells

Question 12

Which structures drain into the inferior meatus?

Answer 12

Nasolacrimal duct

Question 13

Why is the maxillary sinus predisposed to infection?

Answer 13

Ostium lies superior to the cavity, so cilia must work against gravity to move mucous.

Question 14

Which cells are the embryological precursor of the skeletal components of the face?

Answer 14

Neural crest cells

Question 15

Which cranial nerve is associated with the 1st pharyngeal arch?

Answer 15

Trigeminal

Question 16

Which cranial nerve is associated with the 2nd pharyngeal arch?

Answer 16

Facial

Question 17

Which cranial nerve is associated with the 3rd pharyngeal arch?

Answer 17

Glossopharyngeal

Question 18

Which cranial nerve is associated with the 4th pharyngeal arch?

Answer 18

Vagus (superior laryngeal)

Question 19

Which cranial nerve is associated with the 6th pharyngeal arch?

Answer 19

Vagus (recurrent laryngeal)

Question 20

Which skeletal components arise from the 1st pharyngeal arch?

Answer 20

Maxilla
Zygomatic
Part of temporal
Incus
Malleus
Mandible

Question 21

Which muscles arise from the 1st pharyngeal arch?

Answer 21

Muscles of mastication
Anterior belly of digastric
Mylohyoid
Tensor tympani
Tensor palatini

Question 22

Which skeletal components arise from the 2nd pharyngeal arch?

Answer 22

Stapes
Styloid process
Stylohyoid ligament
Lesser horn and upper body of hyoid

Question 23

Which muscles arise from the 2nd pharyngeal arch?

Answer 23

Muscles of facial expression
Stapedius
Stylohyoid
Posterior belly of digastric
Auricular muscles

Question 24

Which skeletal components arise from the 3rd pharyngeal arch?

Answer 24

Greater horn and lower body of hyoid

Question 25

Which muscle arises from the 3rd pharyngeal arch?

Answer 25

Stylopharyngeus

Question 26

Which skeletal components arise from the 4th pharyngeal arch?

Answer 26

Laryngeal cartilages

Question 27

Which muscles arise from the 4th pharyngeal arch?

Answer 27

Cricothyroid
Levator palatine
Pharyngeal constrictors

Question 28

Which skeletal components arise from the 6th pharyngeal arch?

Answer 28

Laryngeal cartilages

Question 29

Which muscles arise from the 6th pharyngeal arch?

Answer 29

Intrinsic laryngeal muscles

Question 30

Which pharyngeal cleft gives rise to the external auditory meatus?

Answer 30

1st

Question 31

Which structures are formed by the 1st pharyngeal pouch?

Answer 31

Middle ear
Eustachian tube
Tympanic membrane

Question 32

Which structures are formed by the 2nd pharyngeal pouch?

Answer 32

Palatine tonsil

Question 33

Which structures are formed by the 3rd pharyngeal pouch?

Answer 33

Thymus, inferior parathyroid

Question 34

Which structures are formed by the 4th pharyngeal pouch?

Answer 34

Superior parathyroid, ultimobranchial body