Coinsurance and other information

My questions for BCBS: In regards to Blue Advantage Bronze HMO 005

Hello I am thinking about picking this plan. I want to know what my obligations are if I had a medical event.

I would like to provide three scenarios and see if you can help me with them:

1. If I incurred a $50,000.00 medical expense, what am I responsible to pay?  $12,700? 

2. If I incurred a $16,000.00 medical expense, what am I responsible to pay?  $7,250?

3. If I incurred a $3,500.00 medical expense, what am I responsible to pay?  $3,500?

If I reach my "max out of pocket"  am I still obligated to pay for office visits after that period?

If I had 2 prior medical events and paid towards my deductible ($3000.00). Does that lower my future obligation?