Question

what does it mean when muscles often work as antagonists? *
1 point
double jointed
they perform opposite functions.
the ability to move your joints through a full range of motion
it involves stretching slowly as far as you can without pain
it involves a series of gentle bouncing or bobbing motion that are not held for a long time

what is the benefit of a healthy lifestyle? *
1 point
watching tv daily
the ability of your body systems to work together efficiently to allow you to be healthy
eating fast food
not exercising
freedom from illnes and debilitating conditions

Explanation:

First Question (Muscles as Antagonists)

To determine the meaning of muscles working as antagonists, we analyze each option:

• "Double jointed" refers to joint flexibility, not muscle function.
• "They perform opposite functions" aligns with the definition of antagonistic muscles (e.g., biceps and triceps, where one flexes and the other extends).
• The other options relate to joint motion or stretching, not muscle antagonism.

To identify the benefit of a healthy lifestyle, we evaluate each option:

• "Watching TV daily", "Eating fast food", and "Not exercising" are unhealthy behaviors.
• "The ability of your body systems to work together efficiently..." describes physical fitness, not a direct benefit of a healthy lifestyle.
• "Freedom from illness and debilitating conditions" is a key benefit of maintaining a healthy lifestyle (proper diet, exercise, etc.).

Answer:

B. They perform opposite functions.

Second Question (Benefit of a Healthy Lifestyle)