Which of the following neuroglial cells are responsible for myelinating axons in the PNS?

If you take 1.0ml of solution out of a tube and place it in a tube with 9.0ml of water, you have made a dilution of 

Explain in detail how you would do a streak isolation plate, including when you would flame your inoculating loop. 

Which of the following nervous systems is responsible for integration? In other words, this system analyzes, filters, and interprets sensory data from the periphery, determines an appropriate response to the stimuli, and then sends a message back to the periphery to perform a specific function.

Which of the following is the term for the branched ends of an axon that create synapses with the target cell?

In a chemical synapse, where do the presynaptic vesicles secrete their neurotransmitters?

What is the correct term for the cylindrical organelles in a muscle cell that contains bundles of specialized proteins primarily used for muscle contraction?

What are the two general functions of the three hamstring muscles?

If the membrane potential of an axon reaches threshold, then an action potential will occur. If it does not reach threshold, the action potential will not occur. What is this principle called?

Short Answer Section (4 points each): Six questions are listed below, each worth 4 points. For full credit, you must answer five of the questions. If you choose to answer all six, you will be given bonus points. Partial credit will be given for each question. 1. Briefly describe the process of mastication. Be sure to include the correct names of the 4 muscles (that we discussed) involved in mastication, as well as how the function of each bone contributes to the process of chewing.   2. First, pick one muscle that moves the scapula and pectoral girdle. Then, describe its origin, insertion, and one important function of the muscle.   3. First, pick one muscle of the posterior thigh and leg. Then, describe its origin, insertion, and one important function of the muscle.   4. Briefly describe the important steps of an action potential.   5. Describe the structure of a sarcomere at rest. Be sure to include terms such as Z discs, I band, A band, H zone, zone of overlap, and which of these parts creates striations.   6. Briefly describe the important steps of the contraction phase during skeletal muscle contraction.