Chapter 10 Review
PSYCH 120

1. Biomechanics is the study of

mechanical forces
human anatomy
human physiology
the laws of Newton

2. Which of the following is NOT one of Newton’s laws?

object in motion or rest remains in motion or rest
acceleration is a function of net forces and mass
inertia is the resistance to a change in motion
every action has a stronger reaction

3. One unit of N is equal to the

number of kilocalories required to eat a quarter pounder hamburger
force required to lift a quarter lb weight
net force (F) required to lift an object divided by its weight (m)
none of the above

4. In biomechanics, bones are important because they

are the place of blood formation
protect the body
maintain posture
provide levers for muscles

5. Because muscles are never completely relaxed, they provide for muscle _______ which helps maintain body posture.

tension
force
tone
plasticity

6. An example of an isometric contraction would be

kicking a ball
leaning against a wall
lifting a briefcase
picking up a book

7. Ralf is measuring his 3-RM. He will continue to increase weight until

he is only able to do one repetition
he is only able to do three repetitions
he is able to lift 300 lb in one contraction
both A and C

8. The stress on a body segment increases as the segment remains immobile for extended period of time. To test permissible loads, biomechanic engineers use

dynamic models
static models
dynamometers
qualitative models

9. The Work Practice Guide for Manual Lifting (NIOSH, 1981, 1991) defines recommended weight limit as weight

that is not likely to cause injury
that can be handled by most people for up to 8 hr without risk of injury
that is likely to cause injury
that is three times the action limit

10. Bursitis is an

inflammation of the tendons
inflammation of the afferent and efferent nerves
inflammation of the fluid-filled sac between the tendons and bone
obstruction of blood flow

Name:

1