The exceptions to this rule are the pulmonary arteries and veins.   
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The pulmonary artery is the one that carries deoxygenated blood from the right side of the heart (ventricle) to the lungs. On the other side, pulmonary veins transfer oxygenated blood from the lungs to the heart (left atrium).</span>
        
             
        
        
        
The St. Lawrence Seaway connects the Great Lakes, the St. Lawrence River, and the Atlantic Ocean.
        
                    
             
        
        
        
<span>A. endoskeleton
</span>Endoskeleton is not a characteristic of Arthropods that has attributed to their diversity and success. Endoskeleton is defined as inner characteristics of the skeletal feature of an organisms such as bears, humans, fish and etc.
Exoskeleton on the other hand is the trait by which arthropods posses. It is skeletal feature that is described outside or is extrinsic, this is evident as crabs have their skeletons outside of their body. 
        
             
        
        
        
Plasma membrane which is also the cell membrane
        
                    
             
        
        
        
Each upward movement of the basilar membrane causes the stereocilia of the inner hair cells to bend, opening K+ gates.