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At around 38 weeks after conception, the _____ starts the sequence of events that prepares the fetus for delivery and starts the process of labor in the mother.

Which of these afferent fibers have the fastest conduction velocity? Which ones are the slowest? Explain WHY?

In the dark calcium ions flow into photoreceptor cells.   How does calcium lead to a decrease in dark current and prevent the cell from depolarizing too much? What is this process called?

Compare the cutaneous mechanosensory and discriminative pain pathways from the lower body with respect to anatomy and sensory modality. For each pathway, where are the cell bodies and axon terminals of the first-, second-, and third-order neurons? Where does each pathway decussate?  Be as detailed as possible! (8 pts) 

The touch sensitivity of a given area can be measured by the two-point discrimination protocol.  Larger receptive field areas will have a [density] innervation density and would produce a [answer2] two-point discrimination.

Match the function with the appropriate structure of the eye (each will only be used once):

Because there are several different color types of cones, they are sensitive to dimmer illumination levels compared to rods.

Even though the retina is in the periphery, it is considered part of the central nervous system because it forms from an out-pocketing of the diencephalon called the optic vesicle.  

The process of filtration in the kidney is most accurately described as

The function of the titin protein is to