Exsc 480 ch.2 terms Questions and Answers
100% Solved
strength The ability to exert force.
surface drag The drag resulting from the friction of a liquid passing along the surface of
an object.
synergist A muscle that assists indirectly in a movement.
tendon A flexible but inelastic cord of strong fibrous collagen tissue attaching a muscle to
a bone.
third-class lever A lever for which the muscle force and resistive force act on the same
side of the fulcrum, with the muscle force acting through a moment arm shorter than that through
which the resistive force acts. The mechanical advantage is thus less than 1.0, so the muscle
force has to be greater than the resistive force to produce torque equal to that produced by the
resistive force.
, torque The degree to which a force tends to rotate an object about a specified fulcrum. It
is defined quantitatively as the magnitude of a force times the length of its moment arm.
transverse plane The plane that divides the body into superior and inferior portions.
Valsalva maneuver A movement in which the glottis is closed, thus keeping air from
escaping the lungs, and the muscles of the abdomen and rib cage contract, creating rigid
compartments of liquid in the lower torso and air in the upper torso.
ventral Located toward the anterior of the body.
vertebral column Another name for the spinal column, or backbone of the human body
weight A body's relative mass or the quantity of matter contained by it.
work Work = Force • Displacement.
100% Solved
strength The ability to exert force.
surface drag The drag resulting from the friction of a liquid passing along the surface of
an object.
synergist A muscle that assists indirectly in a movement.
tendon A flexible but inelastic cord of strong fibrous collagen tissue attaching a muscle to
a bone.
third-class lever A lever for which the muscle force and resistive force act on the same
side of the fulcrum, with the muscle force acting through a moment arm shorter than that through
which the resistive force acts. The mechanical advantage is thus less than 1.0, so the muscle
force has to be greater than the resistive force to produce torque equal to that produced by the
resistive force.
, torque The degree to which a force tends to rotate an object about a specified fulcrum. It
is defined quantitatively as the magnitude of a force times the length of its moment arm.
transverse plane The plane that divides the body into superior and inferior portions.
Valsalva maneuver A movement in which the glottis is closed, thus keeping air from
escaping the lungs, and the muscles of the abdomen and rib cage contract, creating rigid
compartments of liquid in the lower torso and air in the upper torso.
ventral Located toward the anterior of the body.
vertebral column Another name for the spinal column, or backbone of the human body
weight A body's relative mass or the quantity of matter contained by it.
work Work = Force • Displacement.
