The return of molecules from the nephron tubules to the blood is called as ________.

Interstitial fluid is derived from ________.

At what region of the neuron are action potentials first produced?

Sensations are sharpened via ________.

Spatial summation ________.

Cells placed in hypertonic solutions will ________.

The ________ separates the abdominal and thoracic cavities.

Chemicals that stimulate action potentials in postsynaptic cells are called ________.

Increased expression of ________ in the plasma membranes will promote the cellular uptake of glucose.

When a membrane only allows certain things to cross and not others we call this a _______ membrane.