Respiratory system

Question 1

The alar fold is a rostral extension of what tissue?

Answer 1

Ventral meatus

Question 2

What structure create the ‘wings of the nostrils’ or ala nasi?

Answer 2

dorsolateral nasal cartilages

Question 3

What ligaments support the external nasal structure?

Answer 3

dorsal nasal ligament
lateral nasal ligament

Question 4

What muscle pulls the external nose ventrally for sniffing?

Answer 4

orbicularis oris muscle

Question 5

Describe location of the auditory tube opening into the nasopharynx

Answer 5

Lateral nasopharynx caudal to pterygoid bone

Question 6

Function of levator nasolabialis muscle

Answer 6

lift upper lip, increase nares diameter

Question 7

Frontalis muscle

Answer 7

pulls ear rostrally

Question 8

At what age of embryo development does the head start to develop?

Answer 8

4 weeks

develops from 1st pair of pharyngeal arches

Question 9

What bones make up the hard palate?

Answer 9

Palatine
maxillary
incisive

Question 10

Blood supply to the hard palate

Answer 10

Major palatine arteries

Question 11

What nerve provides sensory function to the hard palate?

Answer 11

Trigeminal (major palatine branch of maxillary branch)

Question 12

Location of the major palatine foramen

Answer 12

level of caudal 4th premolar, 1st molar

Question 13

What muscle functions to elevate the caudal soft palate during swallowing?

Answer 13

Levator veli palatini

Question 14

Palatinus muscle function

Answer 14

shortens soft palate

Question 15

What type of epithelium in the nasopharyngeal mucosa?

Answer 15

stratified squamous epithelium