Both the endocrine and nervous systems are major regulating systems of the body; However, the nervous system has been compared to an airmail delivery systtem and the endocrine system to the pony express. Briefly explain this comparison.

The correct answer is -the nervous system is rapid whereas the endocrine is slow and effective on distant target organs.

Explanation:

Both the nervous system and endocrine system are essential and major regulating or controlling systems in an organism. The nervous system ae compared to airmail as it uses nerve stimulus to bring rapid control whereas the endocrine is like pony express as it acts much more slowly.

The nervous system is fast and rapid and required electrochemical stimulus or impulses whereas the endocrine system produces hormones and releases them to the blood which then travels to the target organ and binds to it.

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.