A mother brings her male infant child to the emergency room stating he has progressively worsening constipation, diarrhea, abdominal distension and foul-smelling stool. His symptoms have been present since birth and were typically intermittent. Over the past 2-3 days his symptoms have become more severe and he is now not eating well. She denies seeing any blood in his diaper. His past medical history is significant for failure to pass meconium at birth and failure to meet growth milestones. Upon further history, she describes his stool as “ribbon like”. Which of the following is the most appropriate definitive diagnostic study?

Identify the region labeled “H”

ASES Corporation has a six-person board. At a regular board meeting, only two directors can attend. Those two directors then call directors Alice and Bob and put them on a conference call. The four talk about the corporation buying a parcel of real property and then agree to a resolution for ASES Corporation to purchase such real property from an unaffiliated third party.

Identify the respiratory muscle labeled “A”

Name the folds indicated for at the tips of the arrow.

Identify the tracing on the graph labeled “A”

Identify the type of tissue at the tip of the pointers labeled “B”  

Identify the structure at “A”.  Be specific.  

Identify the green structure at “B”.

Identify the cell layer at “A”.