What type of oxygen-delivery device does the following image illustrate?

Excessive secretion of growth hormone before puberty causes gigantism. If this hormone is secreted excessively after pu-berty, what condition does it cause?

A. Obesity B. Congenital hypothyroidism C. Acromegaly D. Dwarfism

The medication that causes the loss of sensation either locally or generally is called a(n) ________. 

Fill in the blank(s) with the appropriate word(s).