Pharyngeal Arches

Front 1

Branchial clefts are derived from

Back 1

ectoderm
"CAP" clefts-Arches-Pouches = ecto meso and endo

Front 2

Branchial arches are derived from (2)

Back 2

mesoderm and neural crests

Front 3

Branchial pouches are derived from

Back 3

endoderm

Front 4

First Pharyngeal Arch
Nerve

Back 4

Trigeminal Mandibular V3

Front 5

First Pharyngeal Arch
Muscles

Back 5

4 muscles of mastication (masseter, temporalis, lateral and medial pterygoid)
anterior belly of digastric
mylohyoid
tensor tympani
tensor veli palatini

Front 6

First Pharyngeal Arch
Skeletal elements

Back 6

Mandibular and Maxillary process
Malleus
Incus

Front 7

Treacher Collins syndrome and Robin sequence have this symptoms

Back 7

mandibular hyperplasia (first pharyngeal arch) - both involve neural crest cells

Front 8

Pharyngeal Arch 2
Nerve

Back 8

Facial CN VII

Front 9

Pharyngeal Arch 2
Muscles

Back 9

Muscles of Facial Expression (orbicularis oculi and oris, buccinator etc.)
posterior belly of digastric
stylohyoid, stapedius

Front 10

Pharyngeal Arch 2
Skeletal elements

Back 10

Hyoid (inferior part)
styloid process
stapes
(Reichert's cartilage)

Front 11

Pharyngeal Arch 3
Nerve

Back 11

Glossopharyngeal (CN IX)

Front 12

Pharyngeal Arch 3
Muscles

Back 12

stylopharyngeus

Front 13

Pharyngeal Arch 3
skeletal elements

Back 13

Hyoid (superior part)

Front 14

Pharyngeal Arch 4
Nerve

Back 14

Vagus (X)
superior laryngeal branch
pharyngeal branches

Front 15

Pharyngeal Arch 4
Muscles

Back 15

Cricothyroid
levator veli palatini
pharyngeal constrictors
uvular
salpingopharyngeus
palatoglossus
palatopharyngeus

Front 16

Pharyngeal Arch 4
Skeletal elements

Back 16

Thyroid cartilage

Front 17

Pharyngeal Arch 6
Nerve

Back 17

Vagus (CN X)
recurrent laryngeal

Front 18

Pharyngeal Arch 6
Muscles

Back 18

all intrinsic muscles of larynx except cricothyroid
lateral and post. cricoarytenoid
transverse and oblique arytenoid
thyroarytenoid (vocalis)

Front 19

Pharyngeal Arch 6
skeletal elements

Back 19

cricoid
arytenoid
corniculate
cuneiform

Front 20

1st Pharyngeal Cleft derivatives

Back 20

external auditory meatus

Front 21

2nd-4th Pharyngeal Cleft derivative

Back 21

temporary cervical sinuses

Front 22

Persistant cervical sinus (Pharyngeal Clefts 2-4) can lead to a

Back 22

branchial cyst in the neck

Front 23

1st Pharyngeal Pouch

Back 23

endoderm-lined structures of ear
middle ear cavity
eustacian tube
mastoid air cells

Front 24

2nd Pharyngeal Pouch

Back 24

epithelial lining of palatine tonsil

Front 25

3rd Pharyngeal Pouch

Back 25

inferior parathyroids and thymus

Front 26

4th Pharyngeal Pouch

Back 26

superior parathyroids and thymus
ultimobranchial body

Front 27

The anterior 2/3rds of tongue form from

Back 27

1st branchial arch (taste VII sensation V3)

Front 28

The posterior 1/3rd of tongue forms from

Back 28

3rd and 4th branchial arches (sensation/taste IX)

Front 29

Motor innervation of the tongue

Back 29

CN XII

Front 30

Taste in tongue involves CN

Back 30

VII, IX, and X (solitary nucleus)

Front 31

nerve that lies in the tonsillar fossa

Back 31

glossopharyngeal CN IX

Front 32

the constrictor muscles of the pharynx and the muscles of the soft palate are innervated by the

Back 32

vagus nerve

Front 33

astrocytes are derived from

Back 33

neural tube

Front 34

oligodendrocytes are derived from

Back 34

neural tube

Front 35

ependymal cells are derived from

Back 35

neural tube

Front 36

psuedounipolar cells are derived from

Back 36

neural crest

Front 37

schwann cells are derived from

Back 37

neural crest

Front 38

chromaffin cells are derived from

Back 38

neural crest

Front 39

odontoblasts and melanocytes are derived from

Back 39

neural crest

Front 40

leptomeninges are derived from

Back 40

neural crest