Embryo 2

Question 1

1st arch muscles

Answer 1

MOM
Mylohyoid
Anterior digrastic
Tensory tempani, tensory palatini

Question 2

1st arch nerve

Answer 2

CNV

Question 3

2nd arch muscles

Answer 3

Facial expression
Stapedius
Posterior digrastic
Stylohyoid

Question 4

2nd arch nerve

Answer 4

CNVII (2 and 3)

Question 5

3rd arch muscles

Answer 5

stylopharyngeus

Question 6

3rd arch nerve

Answer 6

CNIX

Question 7

4th arch muscles

Answer 7

pharyngeal constrictor
Levator veli palatini
Cricothryroid

Question 8

4th and 6th arch nerve

Answer 8

CNX
Superior laryngeal 4
recurrent laryngeal 6

Question 9

6th arch musces

Answer 9

larynx

Question 10

How many pouches are lined by endoderm?

Answer 10

4

Question 11

Pouch 1 derivatives

Answer 11

middle ear
pharyngotympanic tube
tympanic membrane

Question 12

Pouch 2 derivatives

Answer 12

Palatine tonsils

Question 13

Pouch 3 derivates

Answer 13

Dorsal: inferior parathyroid
Ventral: Thymus

Question 14

Pouch 4 derivatives

Answer 14

Dorsal: superior parathyroid
Ventral: Ultimopharyngeal body,
parafollicular cells

Question 15

1st Pharyngeal groove is the only groove to

Answer 15

contribute to a post nasal structure