Opening of sodium channels in the axon membrane causes    

Carbohydrates, lipids, and proteins are classified as    

Endochondral ossification begins with the formation of a(n)  

The shaft of a long bone is called the    

The most abundant mineral in the human body is     

The reaction N2 + 3 H2 → 2 NH3 is an example of a(n)    

Which of the following substances would be most acidic?    

Anatomy is to ________ as physiology is to ________.  

Carbohydrate molecules    

Glands that discharge an oily secretion into hair follicles are ________ glands.