18. The name of the ridge with EC 1 on it is called the:

4. This part of the neuron would carry a nerve impulse:  

3. These “toilet plungers” are:    

21. The arrow is pointing to the:    

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.