contractions and movement

Question 1

what are the 3 types of contractions

Answer 1

isometric, cincentric and eccentric

Question 2

explain the movement of an isometric contraction

Answer 2

there is no movement generated - external torque is equal to internal torque

Question 3

explain the movement of an concentric contraction

Answer 3

the muscle moment overcomes external forces

Question 4

explain the movement of an eccentric contraction

Answer 4

The external moment is larger than the internal moment so the external forces are winning and overcoming the internal forces as the muscle might not be strong enough

Question 5

what is a lever arm

Answer 5

it is the perpendicular distance between the axis of rotation and the application of forces

Question 6

what is the equation for generation of movement

Answer 6

movement = force * lever arm (M=F*d)

Question 7

give an example of a muscle belly

Answer 7

bicep tricep quads

Question 8

what is the outer layer of the muscle belly called

Answer 8

epimysium

Question 9

what does the muscle belly consist of

Answer 9

many fascicles

Question 10

what are the fascicles enclosed by

Answer 10

the fascicles are eclosed by the perimysium

Question 11

what is inside a singular fascicle

Answer 11

muscle fibers are within a fascicle

Question 12

what are muscle fibers enclosed by

Answer 12

muscle fibers are enclosed by the endomysium

Question 13

what is a lever arm

Answer 13

it is the perpendicular distance between the axis of rotation and the application of force.