pharyngeal apparatus

Question 1

First arch Nerve

Answer 1

(a) Maxillary and mandibular nerves
(b) Chorda tympani nerve

Question 2

First arch Muscles

Answer 2

Muscles of mastication mylohyoid
anterior belly of digastric, tensor veli palatini
tensor tympani

Question 3

First arch Skeleton

Answer 3

maxilla,
zygomatic bone,
part of temporal bone, Meckel’s cartilage,
mandible,
malleus
incus

Question 4

1st arch Ligaments

Answer 4

Anterior ligament of malleus, sphenomandibular ligament

Question 5

First arch artery

Answer 5

Maxillary artery

Question 6

Second arch Nerve

Answer 6

Facial nerve

Question 7

2nd arch muscles

Answer 7

Muscles of facial expression posterior belly of digastric stylohyoid
stapedius

Question 8

2nd arch bone

Answer 8

-Stapes(fr Reichert’s cartilage)
-styloid process,
-lesser cornu of the hyoid bone,
-upper part of body of the hyoid bone

Question 9

2nd arch lig

Answer 9

Stylohyoid ligament

Question 10

Second arch artery

Answer 10

Hyoid and stapedial arteries

Question 11

Third arch nerve

Answer 11

Glossopharyngeal nerve

Question 12

3rd arch Muscles

Answer 12

Stylopharyngeus

Question 13

3rd arch bone

Answer 13

Greater cornu
lower part of body of the hyoid bone

Question 14

Fourth arch artery

Answer 14

(a) Aortic arch (on the left side)
(b) Subclavian artery (on the right side)

Question 15

Fourth and sixth arches nerves

Answer 15

Superior laryngeal branch of vagus nerve (nerve of fourth arch)

Recurrent laryngeal branch of vagus nerve (nerve of sixth arch)

Question 16

Fourth and sixth arches muscle

Answer 16

Cricothyroid,
levator palati,
constrictors of pharynx,
intrinsic muscles of the larynx

Question 17

Fourth and sixth arches bones

Answer 17

Laryngeal cartilages (thyroid, cricoid, arytenoids, corniculate, cuneiform)

Question 18

Fourth arch artery

Answer 18

(a) Aortic arch (on the left side)
(b) Subclavian artery (on the right side)

Question 19

Sixth arch artery

Answer 19

(a) Ductus arteriosus (on the left side)
(b) Pulmonary artery (on the right side)

Question 20

First pouch

Answer 20

Pharyngotympanic tube Tympanic (middle ear) cavity

Question 21

Second pouch

Answer 21

Palatine tonsil
Intratonsillar cleft

Question 22

Third pouch

Answer 22

dorsal part:Inferior parathyroid gland
ventral part:Thymus

Question 23

Fourth pouch

Answer 23

Superior parathyroid gland Caudal pharyngeal complex* (ultimopharyngeal body)

Question 24

First cleft

Answer 24

External auditory meatus
Outer ectodermal layer of tympanic membrane

Question 25

Second Third Fourth clefts

Answer 25

Obliterate/disappear

Question 26

First membrane

Answer 26

Tympanic membrane

Question 27

Second Third Fourth membrane

Answer 27

Obliterate/disappear

Question 28

All the pharyngeal arches are supplied by one nerve except

Answer 28

1st arch

Question 29

Only pharyngeal arch that has two processes

Answer 29

First arch (it presents maxillary and mandibular processes)

Question 30

All the cartilages of larynx develop from fourth and
sixth arch cartilages except

Answer 30

Epiglottis, which develops from caudal part of hypobranchial eminenc

Question 31

Most common location of branchial cyst/fistula

Answer 31

just below the angle of jaw anterior to sternocleidomastoid muscle

Question 32

What are pharyngeal arches derived from?

Answer 32

the cephalic portion of the neural crest,

Question 33

what is the space btw 2nd arch and other arches.what will happen if it persists?

Answer 33

cervical sinus
-it becomes a branchial cyst