Muscle Module 2

Question 1

resting state of cross bridge cycle

Answer 1

• low CA2+

- ADP bound to MHC head. MHC is ATPase

Question 2

what is step one of cross bridge cycle

Answer 2

elevate Ca 2+ levels

Question 3

what is step two of cross bridge cycle

Answer 3

release of ADP

Question 4

what is step three of the cross bridge cycle

Answer 4

ATP bind

Question 5

what is step four of the cross bridge cycle

Answer 5

ATP hydrolyzed

Question 6

__________ 10nm movement, taking 50msec, 1 ATP

Answer 6

powerstrook

Question 7

____________ means more force

Answer 7

shorter sarcomere

Question 8

we can edit the force by changing the_____________________

Answer 8

length of sarcomere

Question 9

___________ is a function of the # of working cross bridges and # of sarcomeres in parallel overlap

Answer 9

force

Question 10

Sarcomere in parallel vs in series:

Answer 10

parallel:
Force: 2 units
Length: 1 unit

Series:
Force: 1 Unit
Length: 2 units

Question 11

_____________ stretched east;ly and then then well at all to prevent damage

Answer 11

titan

Question 12

________________ connective tissue collagen

Answer 12

extracellular

Question 13

longer sarcomere increases ________________

Answer 13

velocity

Question 14

length velocity relationship

Answer 14

1. adjust length
2. stimulate
3. measure initial velocity
4. increase weight after load

Question 15

___________ active force produced

Answer 15

Concentric contraction

Question 16

__________ elastic energy storage

Answer 16

isometric contraction

Question 17

___________ shock absorber

Answer 17

eccentric contraction