Biomechanics Review

Angular Impulse is the product of

• A.     Time and the force that time is applied

• B.     Torque and the time that torque is applied

• C.     Mass and Angular velocity

• D.     Angular inertia and Angular momentum

When a body is completely motionless, it is considered to be

• A.    Undergoing positive acceleration

• B.    Undergoing negative acceleration

• C.     In dynamic equilibrium

• D.    In static equilibrium

The principle of law used to describe lift is called

• A.    Wolff’s law

• B.    Archimedes principle

• C.     Bernoulli’s principle

• D.    Pascal law

Poisson’s ratio refers to

• A. The ratio of strain in the axial direction to strain in the transverse direction for each different type of material

• B.    The ratio of strain in the molecules to strain at the loading surface for each different type of material

• C.     The ratio of shear strain to axial strain for each different type of material

• D.    The ratio of elasticity to plasticity for each different type of material

Ligaments are less stiff and slightly weaker than tendons because

• A.    Ligaments have more elastin and less aligned collagen fibers

• B.    Ligaments have less elastin and more aligned collagen fibers

• C.     Ligaments have a different type of collagen fiber

• D.    Ligaments have randomly arranged collagen fibers

Range of motion of a limb is limited by

• A.    Muscles

• B.    Bones

• C.     Ligaments

• D.    All of the above

What specific stimulus does the Golgi tendon organ detect?

• A.    Change in muscle length

• B.    Muscle tension

• C.     Velocity of muscle contraction

• D.    Muscle temperature

Which of the following is known as the growth center of the bone?

• A.    Periosteum

• B.    Epiphysis

• C.     Osteoblasts

• D.    Diaphysis

Bone is the weakest in resisting

• A.    Compressive stress

• B.    Tensile stress

• C.     Shear stress

• D.    Bone is equally strong in all resisting all stresses

What does the “A” in the following equation represent? C_DPAv²

• A.    Fluid density

• B.    Relative velocity

• C.     Cross-sectional area

• D.    Arc of drag force