Unit Test — Unit test Answers

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1
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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?

A
Susan because her muscles can contract repeatedly over a longer period of time.
B
Laura because her muscles can produce more force for a single event.
C
Laura because her muscles can remain contracted over a longer period of time.
D
Susan because her muscles work together to produce great force to take her the distance.
2
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Select the statement that accurately describes the muscular system.

A
The muscular system is composed of two different types of muscles.
B
The muscular system is composed of muscles, tendons, and ligaments.
C
The muscular system is responsible for controlling the actions of smooth and cardiac muscles.
D
The muscular system is composed of smooth, skeletal, and cardiac muscles.
3

A goniometer measures __________.

A
a joint's maximum range of motion
B
a joint's minimum range of motion
C
a joint's flexion
D
extension and hyperextension
4

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?

A
Lisa could experience burnout from spending so much time in the gym.
B
Lisa could become obsessed with how she looks.
C
Lisa might lose her friends because she is devoting too much time to working out.
D
Lisa might experience symptoms of overtraining, like weight loss and increased irritability.
5

When comparing a well-designed muscular strength workout to a well-designed muscular endurance workout, you would conclude that __________.

A
fewer repetitions with heavier weights would build muscular strength, while less weight and more repetitions would build muscular endurance
B
more weight and more repetitions build strength, while less weight and fewer repetitions build endurance
C
moderate weight with high repetitions builds strength, while heavy weight with low repetitions builds endurance
D
less weight with low repetitions builds strength, and moderate weight with low repetitions builds endurance
6

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?

A
An overweight high school football player is using caffeine to combat fatigue during his workouts.
B
A thin high school lacrosse player is using creatine to improve performance on the field.
C
A healthy high school wrestler is using anabolic steroids to build muscle mass.
D
A normal high school student is using one daily protein supplement to build muscle.
7

How can tight muscles result in back pain?

A
They contain sensitive nerves that become painful when tight.
B
They can constrict the nerves in the spinal column.
C
Tight muscles stretch surrounding tissues and organs.
D
They improve posture, which results in back pain.
8

What comes together at a joint?

A
an arc of movement
B
flexible tissue
C
two bones
D
skin and hair
9

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10

All of the following are functions of smooth muscles EXCEPT:

A
heartbeat
B
breathing
C
perspiration
D
digestion
11

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13

What tissue connects muscles to bones?

A
ligaments
B
tendons
C
cartilage
D
smooth muscle
15

Compare and contrast the exercise principles of progression and overload.

Answer:

Overload means placing greater-than-normal demands on the body during exercise. Progression means gradually increasing the overload over time—for example, by adding weight, repetitions, duration, or intensity—as fitness improves.

24

Describe the components of health-related fitness.

Answer:

The components of health-related fitness are cardiorespiratory endurance, muscular strength, muscular endurance, flexibility, and body composition. Cardiorespiratory endurance is the ability of the heart and lungs to supply oxygen during sustained activity. Muscular strength is the greatest force a muscle can produce, while muscular endurance is its ability to keep working over time. Flexibility is the range of motion around a joint. Body composition is the proportion of fat, muscle, bone, and other tissues in the body.

26

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30

Explain what is meant by the term mechanical advantage.

Answer:

Mechanical advantage is the ratio of the force a machine produces to the effort force applied to it. It describes how much the machine multiplies force.

31

Which of the following BEST describes the exercise principle of specificity?

A
maintaining a challenging workout
B
establishing a regular exercise schedule
C
targeting a particular area for improvement
D
shifting the types of exercises in a workout
32

Explain why regular exercise is the best way to prevent flexibility issues.

Answer:

Regular exercise helps maintain flexibility by moving the joints through their ranges of motion, reducing muscle tightness, and keeping the muscles strong enough to support normal movement.

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