â¢ Both fluids mainly composed of water, but there are more ions in the extracellular fluid than in intracellular fluid. â¢ Glucose is present in both fluids, but extracellular fluid does not have organelles to break those down to produce energy but intracellular fluid does.
Spirit Airlines allow all passengers to bring one personal item, like a briefcase, purse or small backpack, into the cabin with them, but youâll have to pay extra if you want to bring a larger piece of carry-on luggage or check a suitcase into the hold.
Spirit Airlines Fees for optional extras include: 1  BIG FRONT SEAT - spoil yourself by booking 2 by 2 seating for extra legroom. 2  Carry-on and checked baggage. 3  Choosing assigned seats.  Travel insurance for your 1  trip. On board beverages and snacks.  Hotels, cars, vacation packages and cruises.