The primary feature of a neuron that prevents the action potential from traveling back from where it just passed is the ____.
a. concentration gradient
b. refractory period
c. sodium potassium pump
d. phospholipid bilayer
Question 2
The brain can anticipate an osmotic need before the rest of the body actually experiences it ____.
a. through the change in blood pressure
b. because the stomach can detect high levels of sodium
c. through detection of highly concentrated urine
d. because of the rate of vasopressin release
Endosymbiosis in Action
Membrane potential of a cell freely permeable to sodium only.
Chemical equilibrium and the law of mass action.
Mechanisms of action of anticoagulants.
An overlapping record extends back thousands of years of tree ring width
Action Potentials in Mechanoreceptors