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What structure in the eye is indicated by the span of the blue line (between the arrowheads)?  

The bracket labeled ‘A’ indicates a region of the cornea – what is the name for it?

What disorder are zinc ions associated with?

What structural change is associated with asthmatic bronchioles?

What characteristic is shared between cardiomyocytes and skeletal muscle fibers?

What portion of the heart is part of a serous membrane?

What type of cell produces and secretes antibodies into the body’s fluids?

What tissue type is most prominent in the epiglottis?

What is responsible for keeping the trachea patent?

What lymphoid structure screens interstitial fluid from the body’s organs and tissues?