Research shows that receiving some sort of extrinsic reinforcement for engaging in behaviors that we enjoy leads to those behaviors ________.

Intercalated discs are only found in cardiac muscle.

An inverse relationship in which scores for one variable increase as scores for another variable decrease represents

      Name the vertebra pictured (be specific).

Professor Morooka works 60 hours a week for 9 months of the year. During this time he longs for a break. When he finally gets a break, he misses the sense of accomplishment he feels when he is working. ________ theory suggests that this is because there is an optimal level of arousal that we all try to maintain.

A brief electrical charge that travels down the axon of a neuron is called the

Extra credit (1pt)     What organ is this?

  What is the specific name for this collection of lymphoid structures?

Describe what an action potential is.  Where on a muscle cell does it occur?  What two ions are involved?

Which of the following is true of bone resorption.