Pharyngeal Arches

Question 1

Arch 1 Muscles

Answer 1

• Masseter, temporalis, medial and lateral pterygoids.
• mylohyoid and anterior belly of digastric (suprahyoid muscles)
• Tensor veli palatine (soft palate)
• Tensor tympani of middle ear

Question 2

Arch 1 Bones

Answer 2

Maxillary prominence: maxilla zygomatic bone and part of the vomer

Mandibular prominence: mandible and squamous part of temporal lobe

Question 3

Arch 1 Nerve

Answer 3

V

Question 4

Arch 2 Muscles

Answer 4

• Muscles of facial expression
• Stapedius of the middle ear
• Posterior belly of digastric and stylohyoid (suprahyoid muscles)

Question 5

Arch 2 Bones

Answer 5

• Lesser horn of hyoid
• Stapes bone of middle ear
• Styloid process

Question 6

Arch 2 Nerve

Answer 6

VII

Question 7

Arch 3 Muscles

Answer 7

Stylopharyngeus muscle

Question 8

Arch 3 Bone

Answer 8

greater horn of the hyoid

Question 9

Arch 3 Nerve

Answer 9

IX

Question 10

Arch 4 Muscles

Answer 10

• Constricter muscles of pharynx
• Cricothyroid muscle (intrinsic larynx)
• Levator Veli Palatini (soft palate)

Question 11

Arch 4 Nerve

Answer 11

X

Question 12

Arch 5

Answer 12

Rudimentary, nothing to know

Question 13

Arch 6 Muscles

Answer 13

• all intrinsic larynx muscles except the cricothyroid

- Striated muscle portion of the esophagus

Question 14

Arch 6 Nerve

Answer 14

X