29. The most abundant organelles (greatest amount) in a muscle cell are:  

30. What do the dark horizontal lines represent on the sarcomere below? 

3. Which type of tissue consists of many long cells that can contract? 

15. Which of the below is NOT TRUE about the structure at the tip of arrow #15?

36. Alternating motor units help us maintain our posture.    

11. This #52 muscle originates on the clavicle and scapula and inserts on the superior part of the humerus. If you mimic its action when it contracts, you would __________ your arm.    

6. The part of the brain at the tip of the blue pointer is the:

2. Bone cells that destroy or break down old bone are called:

43. Homeostasis is the maintenance of stable (a) ____________ conditions despite ever-changing (b) ____________ conditions.    

41. In the 5-circle muscle diagram, if the large circle represents the entire muscle, what do the other letters represent? Use the word bank below:  FASCICLE,  MUSCLE CELL, MYOFIBRIL, MYOFILAMENTS