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.
The maximum dimensions for your personal item, such as a shoulder bag, backpack, laptop bag or other small item cannot exceed 9 x 10 x 17 inches and the policy is strictly enforced. Anything at or less than that , you won't have any trouble at Southwest or any other airline that I am aware of.