Chapter 20, Problem 30RQ

At the gym Sean gets on a stair-climbing machine and climbs as fast as he can for fifteen minutes. At the end of that time he is breathing hard and his quadriceps and other leg muscles are aching. What is the physiological explanation for these Symptoms?

What would be the drawback of cardiac contractions being the same duration as skeletal muscle contractions?

An obese patient comes to the clinic complaining of swollen feet and ankles, fatigue, shortness of breath, and often feeling spaced out. She is a cashier in a grocery store, a job that requites her to stand all day. Outside of work, she engages in no physical activity. She confesses that, because of her weight, she finds even walking uncomfortable. Explain how the skeletal muscle pump might play a role in this patients signs and symptoms.

Any abnormal condition of skeletal muscles is known as _______________________.

What changes occur at the cellular level in response to resistance training?

What are two examples of family support that would assist a child with a chronic condition?

What are some similarities and differences between the diaphragm and the pelvic diaphragm?

Cocaine use causes vasoconstriction. Is this likely to increase or decrease blood pressure, and why?

How does the delay of the impulse at the atrioventricular node contribute to cardiac function?