Pharyngeal Arches

Question 1

What bones are formed from pharyngeal arch I?

Answer 1

Maxilla Part of temporal bone Mandible Malleus Incus Sphenomandibular ligament

Question 2

What bones are formed from pharyngeal arch II?

Answer 2

Upper part of hyoid Stapes Styloid Stylohyoid ligament

Question 3

What bones are formed from pharyngeal arch III?

Answer 3

Rest of hyoid

Question 4

What bones are formed from pharyngeal arch IV and VI?

Answer 4

Laryngeal cartilages

Question 5

What muscles are formed from pharyngeal arch I?

Answer 5

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

Question 6

What muscles are formed from pharyngeal arch II?

Answer 6

Muscles of facial expression Stapedius Stylohyoid Posterior belly of digastric

Question 7

What muscles are formed from pharyngeal arch III?

Answer 7

Stylopharyngeus

Question 8

What muscles are formed from pharyngeal arch IV?

Answer 8

Pharyngeal constrictors Salpingopharyngeus Palatopharyngeus Levator veli palatini Palatoglossus Cricothyroid

Question 9

What muscles are formed from pharyngeal arch VI?

Answer 9

Remaining laryngeals (except cricothyroid)

Question 10

Which nerve innervates pharyngeal arch I?

Answer 10

CN V3 (mandibular nerve)

Question 11

Which nerve innervates pharyngeal arch II?

Answer 11

CN VII (facial nerve)

Question 12

Which nerve innervates pharyngeal arch III?

Answer 12

CN IX (glossopharyngeal nerve)

Question 13

Which nerve innervates pharyngeal arch IV?

Answer 13

CN X (vagus nerve)

Question 14

Which nerve innervates pharyngeal arch VI?

Answer 14

CN X (recurrent laryngeal nerve of vagus nerve)