Select the statement that accurately describes the muscular system.
Lisa is beginning a weight-training program to firm up and gain muscular strength. She has decided to do some cycling or treadmill jogging to warm up, stretch before the workout and lift weights that isolate each muscle group in her body. She'll take the time to stretch before she leaves the gym. She is so dedicated that she is going to do this workout every day. After doing this for a few months, what may be the biggest concern?
Weight lifters often use supplements and drugs to enhance their appearance or performance. In which scenario is the weight lifter placing himself or herself at the greatest risk for harm?
Which of the following is NOT transferred by alveoli?
When comparing a well-designed muscular strength workout to a well-designed muscular endurance workout, you would conclude that __________.
Susan and Laura are having a disagreement over who has more muscular strength. Susan is a distance runner and Laura is a sprinter. Which girl would be more likely to have more muscular strength?
When lifting weights or spotting a weight lifter, the individual must always keep a straight back.
Doctors can directly measure a person's maximum oxygen intake by measuring their oxygen intake while they __________.
Describe how a multistage fitness test works and what it is intended to do.
A person runs back and forth between two markers, reaching each one in time with beeps. The beeps get progressively faster, so the running pace increases. The test stops when the person can no longer keep up, and the stage reached is used to estimate cardiorespiratory fitness and maximum oxygen intake.
While carefully watching the lifter, the spotter stands with her feet together and her hands ready. In terms of safety, this could BEST be described as __________.
Explain how smoking damages the respiratory system and name two conditions that can develop when a person smokes.
The lungs need to remain elastic so they can effectively move oxygen into the body and carbon dioxide out of the body. By smoking, you are actually introducing carbon monoxide into the body, which is toxic. Tars and other chemicals will settle on the cilia of the lungs and cannot be removed; which further degrades the functionality of the respiratory system. Two conditions that develop when a person smokes are emphysema and bronchitis.
All of the following are functions of smooth muscles EXCEPT:
Compare and contrast the benefits and effects of running and walking.
Running and walking both do not require special equipment and can be done anywhere. They are both exercises that are easy to control one's own efforts. Running burns 600 calories per hour, while walking burns 300 calories per hour. Running has a higher impact on joints than walking does.
Briefly explain why maintaining a healthy weight is important in cardiovascular system care.
Maintaining a healthy weight reduces the stress on the heart and blood vessels.
Describe how to determine your maximum heart rate and why heart rate is important to monitor while exercising.
Estimate your maximum heart rate by subtracting your age from 220. For example, a 20-year-old would have an estimated maximum heart rate of 200 beats per minute. Monitoring your heart rate while exercising helps you judge how hard you are working, stay within an appropriate intensity or target zone, and avoid overexertion. This estimate is general, so individual needs and medical advice should also be considered.
If you increased the amount of muscle mass in your body, what other changes would occur?
Increasing muscle mass would raise resting metabolism, improve body composition, increase strength for daily tasks, and potentially improve overall physical appearance and performance.
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