Embryo-neuro

Question 1

What artery and nerve are in the 1st pharyngeal arch?

Answer 1

Maxillary Artery, mandibular branch of CN V

Question 2

What artery and nerve are in the 2nd pharyngeal arch?

Answer 2

Facial Nerve, Cranial Nerve VII, and stapedial artery

Question 3

What artery and nerve are in the 3rd pharyngeal arch?

Answer 3

Glossopharyngeal Nerve CN IX and Common carotid, root of external carotid, proximal from internal carotid, dorsal Aorta: makes the dorsal Aorta

Question 4

What artery and nerve are in the 4th pharyngeal arch?

Answer 4

Lt - arch of aorta (middle part)
Rt - right subclavian artery (proximal part)
Superior Laryngeal branch

Question 5

What artery and nerve are in the 6th pharyngeal arch?

Answer 5

Recurrent Laryngeal branch

Pulmonary artery, ductus arteriosus

Question 6

What disease occurs due to the lack of the 3rd and 4th pharyngeal pouches? There is a lack of parathyroid and thymus

Answer 6

DiGeorge syndrome

Hypocalcemia can occur

Question 7

What are the pharyngeal pouches lined with ________________

Answer 7

endoderm

Question 8

Where does the Tympanic (middle ear) cavity

Auditory (eustachian) tube manifest from?

Answer 8

pharyngeal pouch 1

Question 9

What is located in the pharyngeal pouch 2?

Answer 9

Palatine tonsils

Tonsillar fossa

Question 10

The inferior parathyroid gland and thymus manifest from where?

Answer 10

Pharyngeal pouch 3

Question 11

What manifests from the pharyngeal pouch 4?

Answer 11

Superior parathyroid gland, Ultimobranchial body

Question 12

What is the Ultimobranchial body eventually become?

Answer 12

Thyroid Gland

Question 13

How many pharyngeal clefts are there?

Answer 13

4 clefts

Question 14

1st cleft becomes what? What does the 1st cleft join into

Answer 14

external auditory meatus

1st pharyngeal pouch

Question 15

2-4th cleft form __________

Answer 15

cervical sinus

Question 16

The 1-4th arches together form what?

Answer 16

the tongue

Question 17

The epithelium over the posterior 1/3 of the tongue is from what embryonic development area?

Answer 17

3rd arch

Question 18

What is the nerve supply of general sensation and taste for the posterior 1/3 of the tongue?

Answer 18

Cranial Nerve IX, Glossopharyngeal

Question 19

What is the epithelium over the posterior most part of tongue derived from?

Answer 19

4th arch

Question 20

What is the nerve supply for the General Sensation and Taste of the Epithelium over posterior most part of tongue?

Answer 20

Superior Laryngeal branch of X

Question 21

Cranial nerve IX innervates what muscle?

Answer 21

Stylopharyngeus

Question 22

What part of the trigeminal nerve has a motor component?

Answer 22

Mandibular

Question 23

Hypospadias is a penile abnormality that is what?

Answer 23

Below the penis opening, abnormal opening of penile urethra folds to fuse

Question 24

Epispadias is what type of penile abnormality?

Answer 24

Penile opening on the dorsal surface of penis, due to faulty position of genital tubercle