Describe in detail excitation-contraction coupling in myocardial cells. Be sure to include the main types of

membrane proteins involved, and the changes in membrane potential, the movements of ions and other

structures involved. Explain how excitation-contraction coupling in cardiac muscle cells is different from

excitation-contraction coupling in skeletal muscle cells. Explain how cardiac muscle cells relax.

Keynesian economists “tweaked” the theory of the loanable funds market--they assumed that real GDP was less than potential real GDP, and that real GDP fluctuated in response to changes in aggregate demand. Use the loanable funds market and explain how adjustments to real GDP, following an autonomous increase in savings, equilibrate the loanable funds market. Recall, that the paradox of thrift is relevant in this case.

1. Trace a sperm from formation to fertilization. Name all of the structures through which it passes. Include all additional structures that contribute to semen volume. Identify the products each produces.  
   
2. Once fertilized, describe all of the steps and sub-steps discussed in the lectures, from zygote to delivery. Include the physiological changes that occur and the hormones that are involved.  
   
3. Explain Incomplete Dominance and give an example.   

Explain the theory of labor supply and define all the important assumptions, functions, and variables that are important for the theory. Use a graph to describe the optimal choice. What determines the numbers of hours worked or whether a worker enters the labor force at all? How would you expect the work behavior of lottery winners to change based on the theory of labor supply? Describe/Illustrate changes in the graph.

In module 1 we discussed supply and demand. Create a children's story to explain the difference between a change in demand vs a change in quantity demanded using ice cream as your good. Also, include in your story a change in supply vs a change in quantity supplied regarding ice cream. To illustrate the changes you can make up your own.

research conservation efforts

“Endangered species in Canda,” Are any species likely to be extinct within the next 50 years? Pick one conservation effort and evaluate published reports. Is it likely that the species will recover and what are the major obstacles to overcome in order to achieve species preservation? Provide suggestions for research to be conducted for better management, as well as changes to management to improve odds of recovery for the species.

Many people with severe mental disorders are members of Medicare/Medicaid, which covers most medications. Some legislative changes to Medicare (Part D) now require some patients to be responsible for a co-pay. Should people diagnosed with severe psychotic disorders, like schizophrenia, be responsible for co-pays for their psychiatric medications? Why or why not? Who, if anyone, should pay?

Consider a project with a life of 4 years with the following information: initial fixed asset investment = $380,000; straight-line depreciation to zero over the 4-year life; zero salvage value; price = $28; variable costs = $15; fixed costs = $121,600; quantity sold = 54,720 units; tax rate = 25 percent. How sensitive is OCF to changes in quantity sold?

A pump steadily delivers 8.94 kg/s of water at the conditions given below. Calculate the pump power (hp).

The rate of heat transfer from the pump to the surroundings is Q = 1.61 kW.

There are no changes in kinetic or potential energy.

Pump Inlet Temperature = 50^oC

Pump Inlet Pressure = 1.75 MPa

Pump Exit Temperature = 50^oC

Pump Exit Pressure = 4.17 MPa