1. Skeletal Muscle Blank

2. Structure of Skeletal Muscle

3. Structure of Skeletal Muscle1 2 3 4 5 6 10 11 9 7 8 12 13 14 15 16 18 17 19 20 21 22

4. Sarcoplasmic Reticulum

5. Sarcoplasmic Reticulum

6. Skeletal Muscle Contraction Cycle

7. Skeletal Muscle Contraction Cycle1 2 3 1) 4 2) 5 6 3) 4) 5) 6)

8. Myosin Actin Tropomyosin Troponin Titin 6. Sarcomere 7. Ca
Name: __________________________________ Date: _________________
Create questions using these words as your answers. The questions should identify the role each of these play in skeletal muscle contraction
Myosin
Actin
Tropomyosin
Troponin
Titin
6. Sarcomere
7. Ca
8. Myosin Head
9. ADP
10. ATP
11. Active Site
12. Rigor mortis 2+

9. Neuromuscular Junction
The axonal ending of a motor neuron and the sarcolemma form a neuromuscular junction.
When a nerve impulse reaches the end of an axon, voltage-regulated calcium channels in its membrane open , allowing Ca2+ to flow in from the extracellular fluid into the axonal terminal.
The axonal terminal contains vesicles filled with neurotransmitter acetylcholine (Ach), which is released when the Ca2+ is present.
Acetylcholine diffuses across the synaptic cleft and attaches to Ach receptors on the sarcolemma, opening Na+ channels and initiating depolarization of the sarcolemma. A. D.
B. – C.

10. Neuromuscular Junction
B. – C. D.