Aortic arch derivatives. Pharyngeal arch & cleft & pouch derivatives – part 3. (~ 24 min)

• Midline neck mass, usually near the hyoid bone

• Elevates with swallowing and tongue protrusion

Which of the following is the most likely diagnosis?

Pick muscles that derive from 6th pharyngeal arch:

Pick derivatives of 2nd aortic arch:

Epithelial lining of tonsils develops from ________

Sort elements:

Malleus and incus bones are derived from ____________

Thymus develops from ________

Cleavage of zygote within 4-8 days after fertilization will present with___________

Sort muscles and pharyngeal arches from which they are derived:

Pharyngeal pouches are _______

Sort muscles and pharyngeal arches from which they are derived:

Pick derivatives of 6th aortic arch:

Pick bones and cartilages that are derivatives of 4th–6th pharyngeal arch:

Sort elements:

Pick derivatives of the third aortic arch:

Treacher-Collins syndrome develops due to failure of neural crest cells to migrate into the _________

Pick bones and cartilages that are derivatives of 3rd pharyngeal arch:

Pierre-Robin syndrome develops due to failure of neural crest cells to migrate into the _________

Sort aortic arch derivatives:

Sort elements:

Pick nerves that derive from  6th pharyngeal arch:

• meconium discharge from umbilicus in neonate

Which of the following is the diagnosis?

Which of the following is derived from 2nd through 4th pharyngeal clefts?

Cleft lip develops due to ________

Pick nerves that derive from 3rd pharyngeal arch:

Patent urachus can be presented as urine discharge from umbilicus in ____________

hCG is synthesized by which part of placenta?