The afterhyperpolarization that follows the action potential:
A. is due to the inactivation of voltage-gated Na+ channels
B. makes it easier to trigger another action potential
C. extends the relative refractory period
D. makes it impossible to fire another action potential
E. is the consequence of continuing K+ influx
ANS: C
You might also like to view...
Which of the following statements concerning mitochondria is false?
A) The cristae increase the inner surface area of the organelle. B) The matrix contains metabolic enzymes involved in ATP synthesis. C) Respiratory enzymes are attached to the surface of the cristae. D) The mitochondria produce oxygen in the process of energy transformation. E) The mitochondria produce most of a cell's ATP.
Your grandmother who lives in an assisted living facility is always complaining about how bad the food is. You eat there with her often and find the food to be cooked well and interesting, even though the food is not what you would really prefer. What is the most reasonable explanation for this?
A) Your grandmother only likes food that she cooks. B) She has had a stroke that affected her primary gustatory cortex. C) She has fewer gustatory cells in her taste bud receptors. D) She has no functional olfactory receptors anymore, and smell is a dominant part of taste. E) Because of wear-and-tear on her tongue over the years, her taste buds are gone.
Which vessels have the highest blood pressure?
A) capillaries B) veins C) arteries D) venules
_____ is probably one of the most naive and sexually repressive societies in the world.
A. Inis Beag B. Mangaia C. Ponape D. Eastern Polynesia