PART 1:

The post for the week will discuss muscles. Understanding muscles and their functions are important in understand the anatomy and physiology of organs and the organ systems they belong to in the human body.

For the discussion this week, you will address the following discussion questions:

1. Define and explain the importance of actin and myosin.
2. Give a brief description of actin and myosin.
3. Give all the steps in detail regarding a muscle contraction.

PART 2:

Define dysentery and explain what may cause it.