Chemistry in Anatomy and Physiology

How does chemistry relate to Anatomy and Physiology? Please give a detailed explanation. Thank you!

Understanding characteristics that humans share with all organisms; understanding anatomy and physiology

List 10 characteristics that humans share with all organisms

Understanding the vital signs; anatomy and physiology

The vital signs include (a) temperature (b) heart rate (c) respiratory rate (d) reflex activity (More than one or none may be true)

Calcium and Calcitonin

Trying to figure something out-if there were an excess of Calcium due to Action potentials stopping for some reason, what, if anything would prevent calcitonin from lowering the level? Is there anything else responsible for lowering calcium? What would happen if the calcium just stayed in one placed unchecked-lumps/bumps??

Alzheimers & dehydration

What part of the brain - where - would be affected if a combative and confused Alzheimer's patient was hospitalized with dehydration? Please explain where the brain may be affected to lead to dehydration.