Pharyngeal Arches

Question 0

2nd arch

Answer 0

Facial nerve
Facial artery
Reicherts cartilage, stapes, styloid process, stylohyoid lig. lesser Cornu, upper body of hyoid
Muscles of facial expression, stylohyoid, post. digastic
No groove
Tonsilar crypts
Part of thyroid

Question 1

1st arch

Answer 1

Maxillary and mandibular branch of trigeminal nerve
Maxillary artery
Mekels cartilage, incus,malleus, maxillary process, ant. lig. of malleus, sphendomandibular lig
Muscles of mastication, tensor tympani, tensor veil palatine, mylohyoid, ant digastic
One groove persists as external auditory meatus
Pouches-> middle ear cavity and eusatchian tube
Part of thyroid
Lateral lingual swellings

Question 2

3rd arch

Answer 2

Glossy pharyngeal nerve
Glossopharyngeal artery 
Greater Cornu and most of hyoid 
Sytlopharyngeus 
No groove
Ventral wing-> Hassan's corpuscles in thorax and epithelium retinaculum of thymus 
Dorsal wing-> parathyroid

Question 3

4th arch

Answer 3

Superior laryngeal nerve
Superior laryngeal artery 
Thyroid cartilage and some laryngeal 
Cricothyroid 
No groove
Ventral wing-> ultimobrachial body-> cells in thyroid 
Dorsal wing-> sup. parathyroid

Question 4

6th arch

Answer 4

Recurrent laryngeal nerve
Recurrent laryngeal artery 
Cricoid cartilages 
Intrinsic muscles of larynx 
No groove
No pouch 
Tracheobrachial groove-> pharyngeal opening