CNA Practice Test: Body Mechanics
- Body Mechanics
- 10 questions
- 12 minutes
These 10 questions cover how to use your body safely when lifting, moving and caring for residents. Back injuries are common in this job, and good body mechanics protect both you and the resident.
Tap an option to mark your answer. You can change your mind, or tap the same option again to leave the question blank. The correct answers and explanations appear when you finish the test.Tap an option to answer; tap it again to leave the question blank.
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Question 1
How far apart should your feet be to give you a good base of support?
Correct answer: B
Feet about shoulder-width apart give a wide, stable base. Feet together make you easy to tip over.
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Question 2
You need to pick up a box from the floor. How should you do it?
Correct answer: C
Bending the knees and hips lets your leg muscles do the work while the back stays straight. Bending at the waist puts the load on your back.
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Question 3
Where should you hold a heavy object while carrying it?
Correct answer: A
Holding a load close keeps it near your center of gravity and lowers the strain on your back. Every inch farther away makes the load harder to control.
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Question 4
You need to turn while carrying a load. What should you do?
Correct answer: B
Turning the whole body by moving the feet keeps the spine in line. Twisting the back while holding weight is a common cause of injury.
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Question 5
Before giving care to a resident in bed, how high should you raise the bed?
Correct answer: B
A bed at about waist level keeps you from bending over the resident. Lower it again before you leave.
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Question 6
Which is easier on your body when moving a heavy object?
Correct answer: C
Pushing, pulling or sliding an object takes less effort than lifting, and it keeps the load supported by the floor.
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Question 7
Which muscles should do most of the work when you lift?
Correct answer: D
The legs and thighs have large, strong muscles meant for lifting. The lower back is easily strained.
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Question 8
A resident cannot help with a move and is too heavy for you to move safely. What should you do?
Correct answer: C
When a move is unsafe for one person, you get a coworker or use the equipment in the care plan. Skipping repositioning can harm the resident.
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Question 9
Before lifting, which muscles should you tighten to help support your back?
Correct answer: D
Tightening the stomach muscles supports the spine during the lift. The other muscles do not stabilize the back.
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Question 10
You are pushing a linen cart down a long hallway. Which way should your body face?
Correct answer: A
Facing the direction of movement keeps your spine aligned and lets the legs do the pushing. Walking sideways or bent over twists and strains the back.
Questions you leave blank are not counted as wrong.
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