A Drug That Blocks the Sodium Gates of a Neuron's

question 71

Multiple Choice

 A drug that blocks the sodium gates of a neuron's membrane will ____.

• A) decrease the threshold
• B) block the action potential
• C) cause repeated action potentials
• D) eliminate the refractory period

---

Definitions:

Microphylls

Small, simple leaves with a single vein, found in some plant species, notably the lycophytes.

Megaphylls

Large leaves with a complex vein structure found in most vascular plants, as opposed to the simpler microphylls.

Vascular Strand

Tissue in plants that contains xylem and phloem, responsible for the transportation of water, nutrients, and sugars.

Stem Tissue

The supportive and conductive tissues in the stem of a plant, responsible for transporting nutrients and water throughout the plant.