The Movement of Actin and Myosin Fibers in a Muscle

question 25

Multiple Choice

The movement of actin and myosin fibers in a muscle contraction contains all of the following steps EXCEPT

• A)the myosin head attaches to the actin filament.
• B)the globular myosin head detaches from the actin filament.
• C)myosin rolls up from one end, forming a ball.
• D)the myosin head returns to its original conformation.

Understand the pathophysiology of blood disorders including thalassemia and their treatment modalities.

Recognize the role of vaccinations in children with compromised immune systems, such as those with HIV.

Identify activities and precautions for children with blood disorders to prevent injury and complications.

Understand the goals and effects of antiretroviral drugs in treating HIV.

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