<span>ensuring that the endotracheal tube is secure</span>
        
             
        
        
        
Arrow symbol  →
Explanation:
The arrow symbol in a chemical equation separates the reactants from products. 
A chemical reaction is process in which chemical changes leads to the formation of products from reactants. 
 The arrow symbol → is used to separate the reactants from products 
                                 ⇆ shows reversibility of the reaction
                                 ↑ indicates that gas is given off as product
learn more: 
Chemical reaction brainly.com/question/3953793
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Oxygen enters the blood in the A. Bronchi.
        
             
        
        
        
Answer:
B. analyzes sensory information, stores information, makes decisions
Explanation:
The receptors sense the changes or stimuli. The sensory neurons of the nervous system deliver this sensory information to the processing center, that is, to the central nervous system. The central nervous system serves to store the information and analyze it to determine the best suitable response. The ability of the nervous system to the store and process of sensory information to make the effector organs to exhibit the best response represents its integrative function.