Questions: b. Increase in heart rate B. Dilation of the vessels serving the skeletal muscle

It seems like the text provided is incomplete and lacks context, making it difficult to understand the specific question or topic being addressed. However, I can attempt to interpret and provide some general information based on the fragments available:

1. Human Anatomy & Physiology: This is a field of study that focuses on the structure and function of the human body. It covers various systems such as the cardiovascular, respiratory, muscular, and nervous systems, among others.

2. Increase in Heart Rate: This could refer to a physiological response where the heart beats faster. An increase in heart rate can be caused by various factors, including physical activity, stress, or the body's response to certain stimuli or conditions.

3. Dilation of the Vessels Serving Skeletal Muscle: This refers to the widening of blood vessels that supply blood to skeletal muscles. This process, known as vasodilation, increases blood flow to the muscles, often in response to exercise or increased physical demand.

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