Exam 2 pt 2 Flashcards
tension development is highly related to the length of a muscle
true
passive insufficiency is the process during which a muscle is shortened to a length where it cannot generate active tension
false
in the stretch-shortening circle, elastic energy is stored most optimally if the eccentric to concentric transition takes a lot of time
false
during eccentric contraction, faster lengthening velocities produce greater muscle force
true
the subconscious mechanism by which the body is able to regulate posture and movement is
proprioception
Types of neurons:
sensory, motor and interneurons
the conscious awareness of the position and movement of the body in space in kinesthesis
true
both passive and active tension contribute to the total muscle force as a muscle increases in length
true
bi-articular muscles cross one joint and as a results can only move that one specific joint
false
an efferent/motor nerve carries electrical impulses
to regions of the body (including muscles) from the central nervous system
mechanical advantage is defined as the ratio between an external load to be moved and required muscle effort
true
a smaller force arm results in:
greater muscle force requirement
which of the following is true regarding second class levers?
they always produce a mechanical advantage (ma>1)
newton’s 1st law states that a body at rest tends to stay at rest unless acted upon
true
newton’s third law states that an object will accelerate in the same direction of force application
false
longer levers allow for greater ability to develop distal velocity
true
stability is our ability to resist a disturbance to our body’s equilibrium
true
which of the following is a factor that influences stability?
the mass, size and height
for every pulley added to a system, the mechanical advantage remains the same
false
biomechanics is the study of the mechanics applied to a living/biological system
true
