I don’t know how to handle this Anatomy question and need guidance.

1.When you are stressed or feel threatened, the body automatically reacts by a process called the “fight or flight response.” This week’s discussion asks you to think of a time where you felt threatened or scared and analyze how you reacted.

This response involves the two division of the autonomic nervous system: the sympathetic and parasympathetic nervous systems. Please answer the following questions:

• Please explain the two parts of the autonomic nervous system.
• Did you respond with a fight or flight response?
• Identify how the nervous system prepared your body for the appropriate action.

One of the key functions of the nervous system is to maintain homeostasis.

• What is homeostasis?

2.Action potentials occur in response to graded potentials that reach threshold. They are necessary for the communication of information to, from, and within the brain. Your ability to read this page and to understand its message, to laugh and cry, to think and feel, to see and hear, and to move your muscles, depends on action potentials. 

1. Describe the events that take place during an action potential. What are the three phases of the action potential?  Include all ion movements and polarity changes that take place during the various phases of the action potential.
2. What is the all-or-none principle of action potentials?  How is this different from graded potentials?