Pharyngeal Apparatus

Question 1

1st Pharyngeal/Aortic Arch

Answer 1

1st Arch -> Chew with (Trigeminal/CN V2,3)

Pharyngeal part -> Mandible, Malleus incus, Muscles of mastication, Mylohyoid

Aortic part -> Maxillary Artery (portion)

Question 2

2nd Pharyngeal/Aortic Arch

Answer 2

2nd Arch -> Smiling with (Facial/CNVII)

Pharyngeal pt. -> Stapes, Styloid process, Smile muscles (facial expression), Stapedius m., platySma

Aortic pt. -> Stapedial A. (usually regresses)

Question 3

3rd Pharyngeal/Aortic Arch

Answer 3

3rd Arch -> Swallow with (Glossopharyngeal/CN IX)

Pharyngeal pt. -> Stylopharyngeus m., greater horn hyoid

Aortic pt. -> Common Carotid & Prox. Internal Carotid (Carotid body reflex -> IX)

Question 4

4th Pharyngeal/Aortic Arch

Answer 4

4th Arch -> Speak and Cough with Vagus/CN X (superior laryngeal)

Pharyngeal pt. -> Muscles of the pharynx/soft palate and a few laryngeal(cough reflex)

Aortic pt. -> True aortic arch (baroreceptor reflex -> X) & Subclavian Arteries.

Question 5

5th Pharyngeal/Aortic Arch

Answer 5

…Trick question, 5th Pharyngeal and Aortic arches are completely obliterated

Question 6

6th Pharyngeal/Aortic Arch

Answer 6

6th Arch -> Speak and Cough with Vagus/CN X (recurrent laryngeal)

Pharyngeal pt. -> Most of the muscles of the Larynx(cough reflex).

6th Aortic Arch -> Pulmonary Arteries & Ductus Arteriosus

Question 7

1st Pharyngeal(branchial) Pouch & Cleft(groove)

Answer 7

1st Organ/Space -> Ear

Pouch -> Middle ear cavity, eustachian tube, mastoid air cells

Cleft -> External Auditory meatus

Question 8

2nd Pharyngeal(branchial) Pouch & Cleft(groove)

Answer 8

2nd Organ/Space -> Tonsils

Pouch -> epithelial lining of palatine tonsil

Cleft -> Temporary cervical sinus (normally obliterated by 2nd arch)

Question 9

3rd Pharyngeal(branchial) Pouch & Cleft(groove)

Answer 9

3rd Organ/Space -> Deep neck

Pouch -> INFERIOR parathyroids & thymus

Cleft -> Temporary cervical sinus (normally obliterated by 2nd arch)

Question 10

4th Pharyngeal(branchial) Pouch & Cleft(groove)

Answer 10

4th Organ/Space -> Mid neck

Pouch -> SUPERIOR parathyroids

Cleft -> Temporary cervical sinus (normally obliterated by 2nd arch)