ch18

Question 1

force developed when a contracting muscle acts on an object

Answer 1

tension

Question 2

force exerted on the muscle by the object

Answer 2

load

Question 3

initiation of the tension producing process of the myofibrils

Answer 3

contraction

Question 4

capability of a force or tension to produce rotation of a limb around a joint

Answer 4

torque

Question 5

muscle fiber contraction in which the tension generated by the muscle fiber is constant thru the range of motion[not able to exert same force]

Answer 5

isotonic conraction

Question 6

force varies as muscle shortens thru ROM

Answer 6

dynamic contraction

Question 7

ontraction produces tension during shotening- acceleration

Answer 7

concentric

Question 8

tension produced while lengthening with greater force production to make more crossbridges /deceleration such as running down hill

Answer 8

eccentric

Question 9

velocity of contraction is constant where reisstance is variable to individual and length of motion

Answer 9

isokinetic

Question 10

contraction occurs withotu change in the length of muscle fibers

Answer 10

isometric

Question 11

increase in muscle tension without movement of skeleton

Answer 11

static

Question 12

neural factors include frequency of stimuli and recruitment also known as

Answer 12

rate coding and number coding

Question 13

rate coding=

Answer 13

increased frequency=increased force

Question 14

number of motor units activated is recruitment aka

Answer 14

number coding

Question 15

power and velocity are directly positive related

Answer 15

FT fibers vs ST fibers

Question 16

fast twitch generates more ___

Answer 16

power

Question 17

the shortening velocity of a muscle increases as the force developed by the muscle decreases, which means that a muscle can shorten fastest when the load is the lightest

Answer 17

power and velocity relationship

Question 18

tension is related to length of sarcomeres -degree of overlap, number of crossbridges

Answer 18

length-tension-angle

Question 19

velocity of shortening is ___ related betwen force and speed

Answer 19

inversely

Question 20

suggests that fatigue results from decrease in certain metabolites, like ATP, phosphocreatine, and glycogen bc muscle fibers are no longer able to produce force

Answer 20

depletion model

Question 21

suggests that fatigue is caused by the accumulation of certain metabolites that are known to impair force generation within muscles like lactate, hydrogen ions, ammonia, and phosphate

Answer 21

accumulation model