contracting a muscle

Question 1

activate motor neuron->

Answer 1

impulse

Question 2

2. Release Ach from motor

Answer 2

binds to receptor at neurotransmitter junction (on the muscle)

Question 3

3. Generate A.P(impulse) in the

Answer 3

skeletal muscle

Question 4

4.travels across the

Answer 4

sarcolemma and t tubules

Question 5

5. release calcium from sarcoplasmic reticulum into the

Answer 5

sarcoplasm

Question 6

6. Calcium binds to troponin

Answer 6

changes shape

Question 7

7.slide tropmyosin over

Answer 7

express active site on actin

Question 8

8.myosin heads are attached and bind to the

Answer 8

active sites on actin

Question 9

9. then myosin pulls actin over it

Answer 9

power stroke

Question 10

10.ATP causes myosin head to be released from

Answer 10

actin and reset

Question 11

11. sarcomere shortens

Answer 11

force is generated

Question 12

troponin

Answer 12

holds tropmysoin in place

Question 13

trpomyosin

Answer 13

block active site