Exam 2 pt 2

Question 1

tension development is highly related to the length of a muscle

Answer 1

true

Question 2

passive insufficiency is the process during which a muscle is shortened to a length where it cannot generate active tension

Answer 2

false

Question 3

in the stretch-shortening circle, elastic energy is stored most optimally if the eccentric to concentric transition takes a lot of time

Answer 3

false

Question 4

during eccentric contraction, faster lengthening velocities produce greater muscle force

Answer 4

true

Question 5

the subconscious mechanism by which the body is able to regulate posture and movement is

Answer 5

proprioception

Question 6

Types of neurons:

Answer 6

sensory, motor and interneurons

Question 7

the conscious awareness of the position and movement of the body in space in kinesthesis

Answer 7

true

Question 8

both passive and active tension contribute to the total muscle force as a muscle increases in length

Answer 8

true

Question 9

bi-articular muscles cross one joint and as a results can only move that one specific joint

Answer 9

false

Question 10

an efferent/motor nerve carries electrical impulses

Answer 10

to regions of the body (including muscles) from the central nervous system

Question 11

mechanical advantage is defined as the ratio between an external load to be moved and required muscle effort

Answer 11

true

Question 12

a smaller force arm results in:

Answer 12

greater muscle force requirement

Question 13

which of the following is true regarding second class levers?

Answer 13

they always produce a mechanical advantage (ma>1)

Question 14

newton’s 1st law states that a body at rest tends to stay at rest unless acted upon

Answer 14

true

Question 15

newton’s third law states that an object will accelerate in the same direction of force application

Answer 15

false

Question 16

longer levers allow for greater ability to develop distal velocity

Answer 16

true

Question 17

stability is our ability to resist a disturbance to our body’s equilibrium

Answer 17

true

Question 18

which of the following is a factor that influences stability?

Answer 18

the mass, size and height

Question 19

for every pulley added to a system, the mechanical advantage remains the same

Answer 19

false

Question 20

biomechanics is the study of the mechanics applied to a living/biological system

Answer 20

true